Patent Publication Number: US-8993044-B2

Title: Methods of forming capacitors having dielectric regions that include multiple metal oxide-comprising materials

Description:
RELATED PATENT DATA 
     This patent resulted from a continuation application of U.S. patent application Ser. No. 12/483,455, now U.S. Pat. No. 8,236,372 filed Jun. 12, 2009, entitled “Methods of Forming Capacitors Having Dielectric Regions That Include Multiple Metal Oxide-Comprising Materials”, naming Rishikesh Krishnan, John Smythe, Vishwanath Bhat, Noel Rocklein, Bhaskar Srinivasan, Jeff Hull, and Chris Carlson as inventors, the disclosure of which is incorporated by reference. 
    
    
     TECHNICAL FIELD 
     Embodiments disclosed herein pertain to capacitors having dielectric regions that include multiple metal oxide-comprising materials, and to methods of forming such capacitors. 
     BACKGROUND 
     Capacitors are commonly-used electrical components in semiconductor integrated circuitry, for example memory circuitry such as DRAM circuitry. A typical capacitor is comprised of two conductive electrodes separated by a non-conducting capacitor dielectric region. As integrated circuit density increases, there is a continuing challenge to maintain sufficiently high storage capacitance despite decreasing capacitor area. One way of increasing cell capacitance is through cell structure techniques. Such techniques include three-dimensional cell capacitors, such as trenched and stack capacitors. Other ways of increasing cell capacitance include the development and utilization of new materials for one or both of the electrodes and the capacitor dielectric region. 
     One type of capacitor utilizes a metal-insulator-metal (MIM) construction. Such can provide capacitance increase in comparison to where at least one of the capacitor electrodes is conductively doped semiconductor material. However, such capacitance increase also undesirably significantly increases leakage current across the capacitor. Further, deposition of oxide-containing capacitor dielectric materials to form a part of a capacitor dielectric region can be problematic in the fabrication of metal-containing capacitor electrodes. 
     Accordingly, needs remain for improved capacitor constructions and methods of forming capacitors. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a diagrammatic cross sectional view of a capacitor construction in accordance with an embodiment of the invention. 
         FIG. 2  is a diagrammatic cross sectional view of a capacitor construction in accordance with an embodiment of the invention. 
         FIG. 3  is a diagrammatic cross sectional view of a capacitor construction in accordance with an embodiment of the invention. 
         FIG. 4  is a diagrammatic cross sectional view of a capacitor construction in accordance with an embodiment of the invention. 
         FIG. 5  is a diagrammatic cross sectional view of a capacitor construction in accordance with an embodiment of the invention. 
         FIG. 6  is a diagrammatic cross sectional view of a capacitor construction in accordance with an embodiment of the invention. 
         FIG. 7  is a diagrammatic cross sectional view of a capacitor construction in accordance with an embodiment of the invention. 
         FIG. 8  is a diagrammatic cross sectional view of a capacitor construction in accordance with an embodiment of the invention. 
         FIG. 9  is a diagrammatic cross sectional view of a capacitor construction in accordance with an embodiment of the invention. 
         FIG. 10  is a diagrammatic cross sectional view of a capacitor construction in accordance with an embodiment of the invention. 
         FIG. 11  is a diagrammatic cross sectional view of a capacitor construction in accordance with an embodiment of the invention. 
         FIG. 12  is a diagrammatic cross sectional view of a capacitor construction in accordance with an embodiment of the invention. 
     
    
    
     DETAILED DESCRIPTION OF EXAMPLE EMBODIMENTS 
     A first embodiment capacitor  10  in accordance with the invention is described with reference to  FIG. 1 . Such is diagrammatically shown, and would be received over or as part of a substrate, for example a semiconductor substrate. In the context of this document, the term “semiconductor substrate” or “semiconductive substrate” is defined to mean any construction comprising semiconductive material, including, but not limited to, bulk semiconductive materials such as a semiconductive wafer (either alone or in assemblies comprising other materials thereon), and semiconductive material layers (either alone or in assemblies comprising other materials). The term “substrate” refers to any supporting structure, including, but not limited to, the semiconductive substrates described above. 
     Capacitor  10  includes an inner conductive metal capacitor electrode  12 , an outer conductive metal capacitor electrode  14 , and a capacitor dielectric region  16  received there-between. In the context of this document, “metal” requires the capacitor electrode to comprise, consist essentially of, or consist of one or more conductive elemental metals, one or more conductive metal alloys, and/or one or more conductive metal compounds. Specific examples include one or more of TiN, Pt, and Ru. Further in the context of this document, “inner” and “outer” are relative to thickness of the substrate over or upon which the capacitor (or the capacitor in fabrication) is received in a direction orthogonal/vertical to a major/horizontal surface of such substrate. Accordingly, the inner conductive metal capacitor electrode is received elevationally deeper within the substrate thickness than is the outer conductive metal capacitor electrode. Accordingly, inner conductive metal capacitor electrode  12  would be received over or as part of underlying/more-inner substrate material (not shown). Conductive metal capacitor electrodes  12  and  14  may be of the same or different composition, construction, size, and/or shape relative one another, and whether existing or yet-to-be developed. An example elevational thickness range for inner conductive metal capacitor electrode  12  is from about 70 Angstroms to about 250 Angstroms, while that for outer conductive metal capacitor electrode  14  is from about 50 Angstroms to about 100 Angstroms. 
     Capacitor dielectric region  16  has a thickness no greater than 150 Angstroms. Further thickness limitations for different materials included as part of capacitor dielectric region  16  are provided herein, and are in addition to a maximum stated thickness for capacitor dielectric region  16 . In one embodiment, the capacitor dielectric region  16  has a thickness no greater than 100 Angstroms, and in one embodiment has a thickness no greater than 75 Angstroms. 
     Capacitor dielectric region  16  includes a first Al 2 O 3 -comprising material  18  outward of inner electrode  12 . Material  18  may comprise, consist essentially of, or consist of Al 2 O 3 , and has a thickness of from 2 Angstroms to 10 Angstroms. In one embodiment, material  18  has a thickness of from 2 Angstroms to 4 Angstroms. A ZrO 2 -comprising material  20  is received outward of first Al 2 O 3 -comprising material  20 . Material  20  may comprise, consist essentially of, or consist of ZrO 2 , and has a thickness of from 30 Angstroms to 70 Angstroms. In one embodiment, material  20  has a thickness from 40 Angstroms to 60 Angstroms. 
     A second Al 2 O 3 -comprising material  22  is received outward of ZrO 2 -comprising material  20 . Material  22  may be of the same or different composition from that of material  18 , and may comprise, consist essentially of, or consist of Al 2 O 3 . Second Al 2 O 3 -comprising material  22  has a thickness of from 2 Angstroms to 16 Angstroms. In one embodiment, material  22  has a thickness of from 4 Angstroms to 7 Angstroms. A TiO 2 -comprising material  24  is received outward of second Al 2 O 3 -comprising material  22 . TiO 2 -comprising material  24  may comprise, consist essentially of, or consist of TiO 2 , and has a thickness of from 40 Angstroms to 80 Angstroms. A sum “T” of the thicknesses of first Al 2 O 3 -comprising material  18 , ZrO 2 -comprising material  20 , and second Al 2 O 3 -comprising material  22  is no greater than 70 Angstroms. 
     A combination of the above stated materials for dielectric region  16  in the stated order in combination with the stated thickness values for the respective largest stated ranges produces the unexpected result of capacitor dielectric region  16  having in combination a dielectric constant k of at least 35 and leakage current no greater than 1×10 −7  amps/cm 2  at from −1.1V to +1.1V. In one embodiment, the capacitor dielectric region  16  has a dielectric constant k of at least 40. In one embodiment, capacitor dielectric region  16  has leakage current no greater than 5×10 −8  amps/cm 2  at from −1.1V to +1.1V. 
     In the above embodiments for capacitor dielectric region  16 , first Al 2 O 3 -comprising material  18  may or may not be in direct physical touching contact with inner electrode  12 . Likewise, TiO 2 -comprising material  24  may or may not be in direct physical touching contact with outer electrode  14 . Accordingly, dielectric material other than Al 2 O 3  may or may not be received between material  18  and inner capacitor electrode  12 , and dielectric material other than TiO 2  may or may not be received between material  24  and outer capacitor electrode  14 . Further in one embodiment and as shown, each of materials  18 ,  20 ,  22  and  24  is in direct physical touching contact with the immediately adjacent of such materials. However, dielectric material of different composition from that of the respective immediately adjacent of materials  18 ,  20 ,  22  and  24  may be received between any one or more of such immediately adjacent materials. 
     For example, a capacitor  10   a  is shown in  FIG. 2 . Like numerals from  FIG. 1  have been utilized where appropriate, with some construction differences being indicated with the suffix “a” or with different numerals. In  FIG. 2 , an Al x Zr y O z -comprising material  26  is received between first Al 2 O 3 -comprising material  18  and ZrO 2 -comprising material  20 , and where material  18  and material  20  are in direct physical touching contact with Al x Zr y O z -comprising material  26 . Where “x” is from 0.3 to 0.7, “y” is from 2.8 to 3.1 and “z” is from 6.0 to 7.4. Where “x” is from 0.1 to 0.3, “y” is from 3.0 to 3.4 and “z” is from 6.1 to 7.4. Where “x” is from 2.8 to 3.2, “y” is from 0.6 to 0.9 and “z” is from 5.3 to 6.7. Other quantities for “x”, “y”, and “z” falling within the respective x:y:z ratios may be used. Al x Zr y O z -comprising material  26  may comprise, consist essentially of, or consist of Al x Zr y O z . An example thickness range for Al x Zr y O z -comprising material  26  is from 2 Angstroms to 32 Angstroms. 
     An Al x Zr y O z -comprising material  28  is received between ZrO 2 -comprising material  20  and second Al 2 O 3 -comprising material  22 , and where material  20  and material  22  are in direct physical touching contact with Al x Zr y O z -comprising material  28 . Ranges for “x”, “y”, and “z” are as stated above for material  26 . Such may be of the same or different composition as material  26 . Al x Zr y O z -comprising material  28  may comprise, consist essentially of, or consist of Al x Zr y O z . An example thickness range for Al x Zr y O z -comprising material  28  is from 2 Angstroms to 32 Angstroms. 
     A Ti x Al y O z -comprising material  30  is received between second Al 2 O 3 -comprising material  22  and TiO 2 -comprising material  24 , and where material  22  and material  24  are in direct physical touching contact with Ti x Al y O z -comprising material  30 . In one embodiment, “x” is from 0.3 to 0.7, “y” is from 3.0 to 3.5 and “z” is from 5.0 to 6.8. In one embodiment, “x” is from 4 to 10, “y” is from 0.1 to 0.4 and “z” is from 8 to 20. Other quantities for “x”, “y”, and “z” falling within such x:y:z ratios may be used. Material  30  may comprise, consist essentially of, or consist of Ti x Al y O z . An example thickness range for Ti x Al y O z -comprising material  30  is from 2 Angstroms to 66 Angstroms. 
     Capacitor dielectric region  16   a  has a thickness no greater than 150 Angstroms. Further thickness limitations for different materials included as part of capacitor dielectric region  16   a  are provided herein, and are in addition to a maximum stated thickness for capacitor dielectric region  16   a . In one embodiment, capacitor dielectric region  16   a  has a thickness no greater than 100 Angstroms, and in one embodiment has a thickness no greater than 75 Angstroms. 
     Materials other than the above-described materials  26 ,  28 ,  30  might be received intermediate immediately adjacent of materials  18 ,  20 ,  22  and  24 . Regardless, provision of one or more of the above stated materials  26 ,  28  and  30  is expected to provide one or both of a further increase in dielectric constant k and a further reduction in leakage current for capacitor dielectric region  16   a  as compared to capacitor dielectric region  16 . 
     Another embodiment capacitor  10   b  is described with reference to  FIG. 3 . Like numerals from the above-described embodiments have been utilized where appropriate, with some construction differences being indicated with the suffix “b” or with different numerals. In  FIG. 3 , capacitor dielectric region  16   b  includes first Al 2 O 3 -comprising material  18  outward of inner electrode  12 , and has a thickness of from 2 Angstroms to 10 Angstroms. TiO 2 -comprising material  24  is received outward of first Al 2 O 3 -comprising material  18 , and has a thickness of from 40 Angstroms to 80 Angstroms. A second Al 2 O 3 -comprising material  32  is received outward of TiO 2 -comprising material  24 . Such may comprise, consist essentially of, or consist of Al 2 O 3  and may or may not be of the same composition as first Al 2 O 3  comprising material  18 . Regardless, second Al 2 O 3 -comprising material  32  has a thickness of from 2 Angstroms to 10 Angstroms, and may or may not be in direct physical touching contact with outer capacitor electrode  14 . In one embodiment, material  32  has a thickness of from 4 Angstroms to 7 Angstroms. 
     Capacitor dielectric region  16   b  has a thickness no greater than 150 Angstroms. Further thickness limitations for different materials included as part of capacitor dielectric region  16   b  are provided herein, and are in addition to a maximum stated thickness for capacitor dielectric region  16   b . In one embodiment, capacitor dielectric region  16   b  has a thickness no greater than 100 Angstroms, and in one embodiment has a thickness no greater than 75 Angstroms. 
     A combination of the above stated materials for dielectric region  16   b  in the stated order in combination with the stated thickness values for the respective largest stated ranges produces the unexpected result of capacitor dielectric region  16   b  having in combination a dielectric constant k of at least 35 and leakage current no greater than 1×10 −7  amps/cm 2  at from −1.1V to +1.1V. In one embodiment, the capacitor dielectric region  16   b  has a dielectric constant k of at least 40. In one embodiment, capacitor dielectric region  16   b  has leakage current no greater than 5×10 −8  amps/cm 2  at from −1.1V to +1.1V. 
     As in the above-described embodiments, immediately adjacent of materials  18 ,  24  and  32  may be in direct physical touching contact with one another, or have intervening dielectric material received there-between. For example and by way of example only, material  30  (not shown in  FIG. 3 ) could be received between one or both of material pairs  32 / 24  or  24 / 18 . 
     Another capacitor  10   c  is shown in  FIG. 4 . Like numerals from the above-described embodiments have been utilized where appropriate, with some construction differences being indicated with the suffix “c” or with different numerals. Capacitor dielectric region  16   c  has a thickness no greater than 150 Angstroms. Further thickness limitations for different materials included as part of capacitor dielectric region  16   c  are provided herein, and are in addition to a maximum stated thickness for capacitor dielectric region  16   c . In one embodiment, capacitor dielectric region  16   c  has a thickness no greater than 100 Angstroms, and in one embodiment has a thickness no greater than 75 Angstroms. 
     The capacitor of  FIG. 4  is similar to that of  FIG. 3 , and comprises specific additional material within capacitor dielectric region  16   c  received outwardly of second Al 2 O 3 -comprising material  32 . Specifically, ZrO 2 -comprising material  20  is received outward of second Al 2 O 3 -comprising material  32 , and has a thickness of from 30 Angstroms to 70 Angstroms. A third Al 2 O 3 -comprising material  34  is received outward of ZrO 2 -comprising material  20 , and has a thickness of from 2 Angstroms to 10 Angstroms. Third Al 2 O 3 -comprising material  34  may comprise, consist essentially of, or consist of Al 2 O 3 , and may be of the same or of different composition from that of either of materials  18  or  32 . Material  34  may or may not be in direct physical touching contact with outer capacitor electrode  14 . Further, third Al 2 O 3 -comprising material  34  may or may not be in direct physical touching contact with ZrO 2 -comprising material  20 , and ZrO 2 -comprising material  20  may or may not be in direct physical touching contact with second Al 2 O 3 -comprising material  32 . In one embodiment, Al x Zr y O z  material  26  (not shown in  FIG. 4 ) may be received between either of material pairs  32 / 20  and  34 / 20 . Regardless, providing of materials  20  and  34  as shown and described is expected to provide one or both of a further increase in dielectric constant k and a further reduction in leakage current for capacitor dielectric region  16   c  as compared to capacitor dielectric region  16   b.    
     Another embodiment capacitor  10   d  is shown in  FIG. 5 . Like numerals from the above-described embodiments have been utilized where appropriate, with some construction differences being indicated with the suffix “d” or with different numerals. Capacitor dielectric region  16   d  has a thickness no greater than 150 Angstroms. Further thickness limitations for different materials included as part of capacitor dielectric region  16   d  are provided herein, and are in addition to a maximum stated thickness for capacitor dielectric region  16   d . In one embodiment, capacitor dielectric region  16   d  has a thickness no greater than 100 Angstroms, and in one embodiment has a thickness no greater than 75 Angstroms. 
     Capacitor dielectric region  16   d  includes optional first Al 2 O 3 -comprising material  18  outward of inner capacitor electrode  12 , and has a thickness of from 0 Angstroms to 10 Angstroms. Accordingly, optional first Al 2 O 3 -comprising material  18  may be present in the capacitor construction  10   d  (as shown), or may not be present in the capacitor construction. 
     ZrO 2 -comprising material  20  is received outward of inner capacitor electrode  12  and outward of optional first Al 2 O 3 -comprising material  18  if optional first Al 2 O 3 -comprising material  18  is present. ZrO 2 -comprising material  20  has a thickness of from 30 Angstroms to 70 Angstroms. Second Al 2 O 3 -comprising material  22  is received outward of ZrO 2 -comprising material  20 , and has a thickness of from 2 Angstroms to 16 Angstroms. TiO 2 -comprising material  24  is received outward of second Al 2 O 3 -comprising material  22 , and has a thickness of from 40 Angstroms to 80 Angstroms. Third Al 2 O 3 -comprising material  32  is received outward of TiO 2 -comprising material  24 , and has a thickness of from 2 Angstroms to 10 Angstroms. A sum T of the thicknesses of optional first Al 2 O 3 -comprising material  18  if such is present, ZrO 2 -comprising material  20 , and second Al 2 O 3 -comprising material  22  totals no more than 70 Angstroms. 
     A combination of the above stated materials for dielectric region  16   d  in the stated order in combination with the stated thickness values for the respective largest stated ranges produces the unexpected result of capacitor dielectric region  16   d  having in combination a dielectric constant k of at least 35 and leakage current no greater than 1×10 −7  amps/cm 2  at from −1.1V to +1.1V. In one embodiment, the capacitor dielectric region  16   d  has a dielectric constant k of at least 40. In one embodiment, capacitor dielectric region  16   d  has leakage current no greater than 5×10 −8  amps/cm 2  at from −1.1V to +1.1V. 
     Materials  18 ,  20 ,  22 ,  24  and  32  are shown as being in direct physical touching contact relative to immediately adjacent of such materials. However, any dielectric material may be received between any pair of immediately adjacent such materials. For example, in some embodiments Al x Zr y O z  material  26  (not shown in  FIG. 5 ) may be received between one or both of material pairs  20 / 18  and  22 / 20 . Further in some embodiments, Ti x Al y O z  material  30  (not shown in  FIG. 5 ) may be received between one or both of material pairs  24 / 22  and  32 / 24 . 
     Another capacitor construction  10   e  is shown in  FIG. 6 . Like numerals from the above-described embodiments have been utilized where appropriate, with some construction differences being indicated with the suffix “e” or with different numerals. Capacitor dielectric region  16   e  has a thickness no greater than 150 Angstroms. Further thickness limitations for different materials included as part of capacitor dielectric region  16   e  are provided herein, and are in addition to a maximum stated thickness for capacitor dielectric region  16   e . In one embodiment, capacitor dielectric region  16   e  has a thickness no greater than 100 Angstroms, and in one embodiment has a thickness no greater than 75 Angstroms. 
     Capacitor dielectric region  16   e  includes first Al 2 O 3 -comprising material  18  outward of inner capacitor electrode  12 , and has a thickness of from 2 Angstroms to 10 Angstroms. ZrO 2 -comprising material  22  is received outward of first Al 2 O 3 -comprising material  18 , and has a thickness of from 30 Angstroms to 70 Angstroms. TiO 2 -comprising material  24  is received outward of ZrO 2 -comprising material  22 , and has a thickness of from 40 Angstroms to 80 Angstroms. Second Al 2 O 3 -comprising material  34  is received outward of TiO 2 -comprising material  24 , and has a thickness of from 2 Angstroms to 10 Angstroms. 
     A combination of the above stated materials for dielectric region  16   e  in the stated order in combination with the stated thickness values for the respective largest stated ranges produces the unexpected result of capacitor dielectric region  16   e  having in combination a dielectric constant k of at least 35 and leakage current no greater than 1×10 −7  amps/cm 2  at from −1.1V to +1.1V. In one embodiment, the capacitor dielectric region  16   e  has a dielectric constant k of at least 40. In one embodiment, capacitor dielectric region  16   e  has leakage current no greater than 5×10 −8  amps/cm 2  at from −1.1V to +1.1V. 
     Materials  18 ,  22 ,  24  and  34  are shown as being in direct physical touching contact relative to immediately adjacent of such materials. However, any dielectric material may be received between any pair of immediately adjacent such materials. For example, in some embodiments Al x Zr y O z  material  26  (not shown in  FIG. 6 ) may be received between material pair  22 / 18 . In some embodiments, Ti x Al y O z  material  30  (not shown in  FIG. 6 ) may be received between material pair  34 / 24 . Further in some embodiments, a Ti x Zr y O z -comprising material (not shown in  FIG. 6 ) may be received between material pair  24 / 22 . Relative ratio quantities for “x”, “y”, and “z” in Ti x Al y O z  are as follows. Where “x” is from 0.6 to 0.8, “y” is from 2.5 to 3.6 and “z” is from 6.1 to 8.9. Where “x” is from 0.1 to 0.3, “y” is from 3.0 to 3.4 and “z” is from 6.1 to 7.5. Where “x” is from 3.5 to 4.0, “y” is from 0.1 to 0.3 and “z” is from 7.1 to 8.7. Where “x” is from 1.0 to 2.0, “y” is from 0.2 to 0.5 and “z” is from 2.3 to 5.1. Other quantities for “x”, “y”, and “z” falling within the respective x:y:z ratios may be used. The Ti x Zr y O z -comprising material may comprise, consist essentially of, or consist of Ti x Zr y O z . An example thickness range for a Ti x Zr y O z -comprising material is from 2 Angstroms to 76 Angstroms. 
     Another capacitor construction  10   f  is shown in  FIG. 7 . Like numerals from the above-described embodiments have been utilized where appropriate, with some construction differences being indicated with the suffix “f” or with different numerals. Capacitor dielectric region  16   f  has a thickness no greater than 150 Angstroms. Further thickness limitations for different materials included as part of capacitor dielectric region  16   f  are provided herein, and are in addition to a maximum stated thickness for capacitor dielectric region  16   f . In one embodiment, capacitor dielectric region  16   f  has a thickness no greater than 100 Angstroms, and in one embodiment has a thickness no greater than 75 Angstroms. 
     Capacitor dielectric region  16   f  includes an HfO 2 -comprising material  38  outward of inner capacitor electrode  12 , and has a thickness of from 10 Angstroms to 50 Angstroms. Material  38  may or may not be in direct physical touching contact with inner capacitor electrode  12 . TiO 2 -comprising material  24  is received outward of HfO 2 -comprising material  38 , and has a thickness of from 40 Angstroms to 80 Angstroms. Al 2 O 3 -comprising material  32  is received outward of TiO 2 -comprising material  24 , and has a thickness of from 2 Angstroms to 10 Angstroms. 
     A combination of the above stated materials for dielectric region  16   f  in the stated order in combination with the stated thickness values produces the unexpected result of capacitor dielectric region  16   f  having in combination a dielectric constant k of at least 35 and leakage current no greater than 1×10 −7  amps/cm 2  at from −1.1V to +1.1V. In one embodiment, the capacitor dielectric region  16   f  has a dielectric constant k of at least 40. In one embodiment, capacitor dielectric region  16   f  has leakage current no greater than 5×10 −8  amps/cm 2  at from −1.1V to +1.1V. 
     Materials  38 ,  24 , and  32  may be in direct physical touching contact relative to immediately adjacent of such materials, or intervening dielectric material may be received between one or both of material pairs  38 / 24  and  32 / 24 . For example, another capacitor construction  10   g  is shown in  FIG. 8 . Like numerals from the above-described embodiments have been utilized where appropriate, with some construction differences being indicated with the suffix “g” or with different numerals. Capacitor dielectric region  16   g  has a thickness no greater than 150 Angstroms. Further thickness limitations for different materials included as part of capacitor dielectric region  16   g  are provided herein, and are in addition to a maximum stated thickness for capacitor dielectric region  16   g . In one embodiment, capacitor dielectric region  16   g  has a thickness no greater than 100 Angstroms, and in one embodiment has a thickness no greater than 75 Angstroms. 
     In capacitor dielectric region  16   g , TiO 2 -comprising material  24  is not in direct physical touching contact with HfO 2 -comprising material  38 , rather having a material  40  received there-between. In one embodiment, such comprises a Ti x Hf y O z -comprising material, where TiO 2 -comprising material  24  and HfO 2 -comprising material  38  are in direct physical touching contact with Ti x Hf y O z -comprising material  40 . Where “x” is from 0.6 to 0.9, “y” is from 2.8 to 3.5 and “z” is from 6.7 to 8.9. Where “x” is from 1.0 to 2.0, “y” is from 0.2 to 0.5 and “z” is from 2.3 to 5.1. Other quantities for “x”, “y”, and “z” falling within such x:y:z ratio may be used. Material  40  may comprise, consist essentially of, or consist of Ti x Hf y O z . An example thickness range for Ti x Hf y O z -comprising material  40  is from 2 Angstroms to 94 Angstroms. Ti x Al y O z  material  30  is received between Al 2 O 3 -comprising material  32  and TiO 2 -comprising material  24 . Regardless, provision of one or more of the above stated materials  40  or  30  is expected to provide one or both of a further increase in dielectric constant k and a further reduction in leakage current for capacitor dielectric region  16   g  as compared to capacitor dielectric region  16   f.    
     Another capacitor construction  10   h  is shown in  FIG. 9 . Like numerals from the above-described embodiments have been utilized where appropriate, with some construction differences being indicated with the suffix “h” or with different numerals. Capacitor dielectric region  16   h  has a thickness no greater than 150 Angstroms. Further thickness limitations for different materials included as part of capacitor dielectric region  16   h  are provided herein, and are in addition to a maximum stated thickness for capacitor dielectric region  16   h . In one embodiment, capacitor dielectric region  16   h  has a thickness no greater than 100 Angstroms, and in one embodiment has a thickness no greater than 75 Angstroms. 
     Capacitor dielectric region  16   h  includes a Ti x M y O z -comprising material  44  outward of inner capacitor electrode  12 , and has a thickness of from 5 Angstroms to 100 Angstroms. “M” is at least one of Zr, Hf, Ta, Si, Nb, or Al. Where “x” is from 0.6 to 0.9, “y” is from 2.8 to 3.5 and “z” is from 5.3 to 10.7. Other quantities for “x”, “y”, and “z” falling within such x:y:z ratio may be used. In one embodiment, Ti x M y O z -comprising material  44  has a thickness of from 30 Angstroms to 75 Angstroms. Ti x M y O z -comprising material  44  may or may not be in direct physical touching contact with inner electrode  12 . A TiO 2 -comprising material  45  is received outward of Ti x M y O z -comprising material  44 . TiO 2 -comprising material  45  may comprise, consist essentially of, or consist of TiO 2 , and has a thickness of from 5 Angstroms to 100 Angstroms. 
     A combination of the above stated materials for dielectric region  16   h  in the stated order in combination with the stated thickness values produces the unexpected result of capacitor dielectric region  16   h  having in combination a dielectric constant k of at least 35 and leakage current no greater than 1×10 −7  amps/cm 2  at from −1.1V to +1.1V. In one embodiment, capacitor dielectric region  16   h  has a dielectric constant k of at least 40. In one embodiment, capacitor dielectric region  16   h  has leakage current no greater than 5×10 −8  amps/cm 2  at from −1.1V to +1.1V. 
     Materials  45  and  44  may be in direct physical touching contact with each other, or intervening dielectric material may be received between materials  45  and  44 . 
     Another capacitor construction  10   i  is shown in  FIG. 10 . Like numerals from the above-described embodiments have been utilized where appropriate, with some construction differences being indicated with the suffix “i” or with different numerals. Capacitor dielectric region  16   i  has a thickness no greater than 150 Angstroms. Further thickness limitations for different materials included as part of capacitor dielectric region  16   i  are provided herein, and are in addition to a maximum stated thickness for capacitor dielectric region  16   i . In one embodiment, capacitor dielectric region  16   i  has a thickness no greater than 100 Angstroms, and in one embodiment has a thickness no greater than 75 Angstroms. 
     Capacitor dielectric region  16   i  includes first Al 2 O 3 -comprising material  18  outward of inner capacitor electrode  12 , and has a thickness of from 2 Angstroms to 10 Angstroms. ZrO 2 -comprising material  20  is received outward of first Al 2 O 3 -comprising material  18 , and has a thickness of from 30 Angstroms to 70 Angstroms. Second Al 2 O 3 -comprising material  22  is received outward of ZrO 2 -comprising material  20 , and has a thickness of from 2 Angstroms to 16 Angstroms. 
     Ti x M y O z -comprising material  44  is received outward of second Al 2 O 3 -comprising material  22 , and has a thickness of from 5 Angstroms to 100 Angstroms. Material  44  may or may not be in direct physical touching contact with outer electrode  14 . A sum T of the thicknesses of first Al 2 O 3 -comprising material  18 , ZrO 2 -comprising material  20 , and second Al 2 O 3 -comprising material  22  totals no more than 70 Angstroms. 
     A combination of the above stated materials for dielectric region  16   i  in the stated order in combination with the stated thickness values produces the unexpected result of capacitor dielectric region  16   i  having in combination a dielectric constant k of at least 35 and leakage current no greater than 1×10 −7  amps/cm 2  at from −1.1V to +1.1V. In one embodiment, capacitor dielectric region  16   i  has a dielectric constant k of at least 40. In one embodiment, capacitor dielectric region  16   i  has leakage current no greater than 5×10 −8  amps/cm 2  at from −1.1V to +1.1V. 
     Immediately adjacent of materials  18 ,  20 ,  22  and  44  may be in direct physical touching contact with one another, or have intervening dielectric material received there-between. For example, material  26 / 30  (not shown in  FIG. 10 ) could be received between one or both of material pairs  18 / 20  and  20 / 22 . Regardless, material different from that of materials  22  and  44  could be received between materials  22  and  44 . 
     Another capacitor construction  10   j  is shown in  FIG. 11 . Like numerals from the above-described embodiments have been utilized where appropriate, with some construction differences being indicated with the suffix “j” or with different numerals. Capacitor dielectric region  16   j  has a thickness no greater than 150 Angstroms. Further thickness limitations for different materials included as part of capacitor dielectric region  16   j  are provided herein, and are in addition to a maximum stated thickness for capacitor dielectric region  16   j . In one embodiment, capacitor dielectric region  16   j  has a thickness no greater than 100 Angstroms, and in one embodiment has a thickness no greater than 75 Angstroms. 
     Capacitor dielectric region  16   j  includes optional first Al 2 O 3 -comprising material  18  outward of inner capacitor electrode  12 , and has a thickness from 0 Angstroms to 10 Angstroms. Accordingly, capacitor construction  10   j  may or may not include first Al 2 O 3 -comprising material  18 . A first material  46  is received outward of inner capacitor electrode  12  and outward of optional first Al 2 O 3 -comprising material  18  if such is present. First material  46  has a thickness of from 20 Angstroms to 50 Angstroms. First material  46  comprises at least one of ZrO 2  and HfO 2 , including any combination or mixture thereof. First material  46  may comprise, consist essentially of, or consist of one or more of ZrO 2  and HfO 2 . 
     An optional second Al 2 O 3 -comprising material  22  is received outward of first material  46 , and has a thickness of from 0 Angstroms to 16 Angstroms. Accordingly, optional second Al 2 O 3 -comprising material  22  may or may not be present in capacitor dielectric region  16   j , and independent of whether optional first Al 2 O 3 -comprising material  18  is present. TiO 2 -comprising material  24  is received outward of first material  46  and outward of optional second Al 2 O 3 -comprising material  22  if such is present. TiO 2 -comprising material  24  has a thickness of from 40 Angstroms to 80 Angstroms. 
     A second material  48  is received outward of TiO 2 -comprising material  24 , and comprises at least one of ZrO 2  or HfO 2 , including any combination or mixture thereof. Such may comprise, consist essentially of, or consist of one or more of ZrO 2  and HfO 2 , and may or may not be of the same composition as first material  46 . Second material  48  has a thickness of from 10 Angstroms to 40 Angstroms, with a sum of the thicknesses of first material  46  and second material  48  alone totaling no more than 70 Angstroms. 
     Optional third Al 2 O 3 -comprising material  32  is received outward of second material  48 , and has a thickness of from 0 Angstroms to 10 Angstroms. Accordingly, optional third Al 2 O 3 -comprising material  32  may or may not be present in capacitor dielectric region  16   j , and independent of presence of one or both of optional first Al 2 O 3 -comprising material  18  and optional second Al 2 O 3 -comprising material  22 . Accordingly, zero, one, two, or three of Al 2 O 3 -comprising materials  18 ,  22  and  32  may or may not be present in capacitor dielectric region  16   j.    
     A combination of the above stated materials for dielectric region  16   j  in the stated order in combination with the stated thickness values produces the unexpected result of capacitor dielectric region  16   j  having in combination a dielectric constant k of at least 35 and leakage current no greater than 1×10 −7  amps/cm 2  at from −1.1V to +1.1V. In one embodiment, capacitor dielectric region  16   j  has a dielectric constant k of at least 40. In one embodiment, capacitor dielectric region  16   j  has leakage current no greater than 5×10 −8  amps/cm 2  at from −1.1V to +1.1V. 
     Materials  18 ,  46 ,  22 ,  24 ,  48 , and  32  are shown as being in direct physical touching contact relative to immediately adjacent of such materials. However, any dielectric material may be received between any pair of immediately adjacent such materials. For example, in some embodiments Al x Zr y O z  material  26 / 28  (not shown in  FIG. 11 ) may be received between any of material pairs  46 / 18 ,  46 / 22 , and  48 / 32  where for example materials  46  and/or  48  comprise ZrO 2 . In some embodiments, Al x Hf y O z  material (not shown in  FIG. 11 ) may be received between any of material pairs  46 / 18 ,  46 / 22 , and  48 / 32  where for example materials  46  and/or  48  comprise HfO 2 . In some embodiments, Ti x Hf y O z  material  30  (not shown in  FIG. 11 ) may be received between material pair  24 / 22 . In some embodiments where second material  48  comprises HfO 2 , a Ti x Hf y O z -comprising material  40  (not shown in  FIG. 11 ) may be received between material pair  48 / 24 . 
     Another capacitor construction  10   k  is shown in  FIG. 12 . Like numerals from the above-described embodiments have been utilized where appropriate, with some construction differences being indicated with the suffix “k” or with different numerals. Capacitor dielectric region  16   k  has a thickness no greater than 150 Angstroms. Further thickness limitations for different materials included as part of capacitor dielectric region  16   k  are provided herein, and are in addition to a maximum stated thickness for capacitor dielectric region  16   k . In one embodiment, capacitor dielectric region  16   k  has a thickness no greater than 100 Angstroms, and in one embodiment has a thickness no greater than 75 Angstroms. 
     Capacitor dielectric region  16   k  includes optional first Al 2 O 3 -comprising material  18  outward of inner capacitor electrode  12 , and has a thickness from 0 Angstroms to 2 Angstroms. Accordingly, capacitor construction  10   k  may or may not include first Al 2 O 3 -comprising material  18 . Al x Zr y O z -comprising material  26  is received outward of inner capacitor electrode  12  and outward of optional first Al 2 O 3 -comprising material  18  if such is present. Al x Zr y O z -comprising material  26  has a thickness of from 2 Angstroms to 30 Angstroms. 
     Optional second Al 2 O 3 -comprising material  22  is received outward of Al x Zr y O z -comprising material  26 , and has a thickness of from 0 Angstroms to 10 Angstroms. Accordingly, optional second Al 2 O 3 -comprising material  22  may or may not be present in capacitor dielectric region  16   k , and independent of whether optional first Al 2 O 3 -comprising material  18  is present. 
     A first material  52  is received outward of Al x Zr y O z -comprising material  26  and outward of optional second Al 2 O 3 -comprising material  22  if optional second Al 2 O 3 -comprising material  22  is present. First material  52  comprises at least one of ZrO 2  or Ti x Zr y O z , or Zr a Ti x Al y O z , including any combinations or mixtures thereof. Relative ratio quantities for “x”, “y”, and “z” in Ti x Zr y O z  are as follows. Where “x” is from 0.6 to 0.8, “y” is from 2.5 to 3.6 and “z” is from 6.1 to 8.9. Where “x” is from 0.1 to 0.3, “y” is from 3.0 to 3.4 and “z” is from 6.1 to 7.4. Where “x” is from 3.5 to 4.0, “y” is from 0.1 to 0.3 and “z” is from 7.1 to 8.7. Where “x” is from 1.0 to 2.0, “y” is from 0.2 to 0.5 and “z” is from 2.3 to5.1. Other quantities for “x”, “y”, and “z” falling within the respective x:y:z ratios may be used. Relative ratio quantities for “a”, “x”, “y”, and “z” in Zr a Ti x Al y O z  are as follows. Where “a” is from 0.1 to 0.5, “x” is from 0.2 to 2.0, “y” is from 0.01 to 0.1 and “z” is from 0.8 to 5.2. Other quantities for “a”, “x”, “y”, and “z” falling within the respective a:x:y:z ratios may be used. First material  52  has a thickness of from 30 Angstroms to 60 Angstroms. First material  52  may comprise, consist essentially of, or consist of one or more of ZrO 2  or Ti x Zr y O z  or Zr a Ti x Al y O z . During formation of capacitor dielectric region  16   k , first material  52  may or may not be annealed prior to deposition of any material thereover. If annealed, an example annealing temperature range is from about 400° C. to about 650° C., and an example time range for such annealing is from about 10 seconds to about 300 seconds. Plasma may or may not be used. 
     Optional third Al 2 O 3 -comprising material  32  is received outward of first material  52 , and has a thickness of from 0 Angstroms to 4 Angstroms. Accordingly, optional third Al 2 O 3 -comprising material  32  may or may not be present in capacitor dielectric region  16   k , and independent of whether optional first Al 2 O 3 -comprising material  18  or whether optional second Al 2 O 3 -comprising material  22  are present. 
     A second material  54  is received outward of first material  52  comprising at least one of ZrO 2  or Ti x Zr y O z  or Zr a Ti x Al y O z , and outward of optional third Al 2 O 3 -comprising material  32  if optional third Al 2 O 3 -comprising material  32  is present. Second material  54  comprises at least one of TiO 2  or Ti x Zr y O z  or Zr a Ti x Al y O z , including any combinations or mixtures thereof. Example materials for Ti x Zr y O z  and Zr a Ti x Al y O z , are those as described above for capacitor dielectric region  16   k . Second material  54  has a thickness of from 10 Angstroms to 70 Angstroms. Second material  54  may comprise, consist essentially of, or consist of one or more of ZrO 2  or Ti x Zr y O z  or Zr a Ti x Al y O z . During formation of capacitor dielectric region  16   k , second material  54  may or may not be annealed prior to deposition of any material thereover. If annealed, example conditions include those described above for annealing first material  52 . 
     An optional fourth Al 2 O 3 -comprising material  56  is received outward of second material  54 , and has a thickness of from 0 Angstroms to 4 Angstroms. Accordingly, optional fourth Al 2 O 3 -comprising material  56  may or may not be present in capacitor dielectric region  16   k , and independent of whether optional first Al 2 O 3 -comprising material  18 , whether optional second Al 2 O 3 -comprising material  22 , or whether optional third Al 2 O 3 -comprising material  32  are present. Accordingly, zero, one, two, three, or four of Al 2 O 3 -comprising materials  18 ,  22 ,  32 , and  56  may or may not be present in capacitor dielectric region  16   k.    
     A combination of the above stated materials for dielectric region  16   k  in the stated order in combination with the stated thickness values produces the unexpected result of capacitor dielectric region  16   k  having in combination a dielectric constant k of at least 35 and leakage current no greater than 1×10 −7  amps/cm 2  at from −1.1V to +1.1V. In one embodiment, capacitor dielectric region  16   k  has a dielectric constant k of at least 40. In one embodiment, capacitor dielectric region  16   k  has leakage current no greater than 5×10 −8  amps/cm 2  at from −1.1V to +1.1V. 
     Materials  18 ,  26 ,  22 ,  52 ,  32 ,  54 , and  56  are shown as being in direct physical touching contact relative to immediately adjacent of such materials. However, any dielectric material may be received between any pair of immediately adjacent such materials. 
     Embodiments of the invention also encompass various methods of forming capacitors encompassing any existing or yet-to-be-developed deposition and anneal techniques. Such encompass depositing inner conductive metal capacitor electrode material over a suitable substrate, for example a semiconductor substrate. Example materials include any of those described above with respect to inner conductive metal capacitor electrode  12 . A capacitor dielectric region is formed outward of the inner conductive metal capacitor electrode material to a thickness no greater than 150 Angstroms, to have a dielectric constant k of at least 35, and to have leakage current no greater than 1×10 −7  amps/cm 2  at from −1.1V to +1.1V. 
     In one embodiment, the forming of the capacitor dielectric region includes depositing an amorphous ZrO 2 -comprising material to a thickness no greater than 35 Angstroms outward of the inner conductive metal capacitor electrode material. The ZrO 2 -comprising material formed outward of the inner conductive metal capacitor electrode material may or may not be in direct physical touching contact therewith. The amorphous ZrO 2 -comprising material is annealed after its deposition to form crystalline ZrO 2 -comprising material having a thickness no greater than 35 Angstroms. Such annealing may or may not be conducted in an inert atmosphere, and may or may not be subatmospheric. An example annealing ambient is any of air, Ar, N 2 , O 2 , O 3 , and any combination or sub-combinations thereof. An example annealing temperature range is from about 400° C. to about 650° C., and an example time range for such annealing is from about 10 seconds to about 300 seconds. Plasma may or may not be used. 
     After the annealing of the amorphous ZrO 2 -comprising material, an Al 2 O 3 -comprising material is deposited outward of the crystalline ZrO 2 -comprising material, and to have a thickness of from 2 Angstroms to 16 Angstroms. The Al 2 O 3 -comprising material formed over the crystalline ZrO 2 -comprising material may or may not be in direct physical touching contact therewith. In one embodiment, an Al x Zr y O z -comprising material is provided between such Al 2 O 3 -comprising material and the crystalline ZrO 2 -comprising material, with the Al 2 O 3 -comprising material and the ZrO 2 -comprising material there-under being in direct physical touching contact with the Al x Zr y O z -comprising material. 
     An amorphous TiO 2 -comprising material is deposited to a thickness no greater than 50 Angstroms outward of the Al 2 O 3 -comprising material. The amorphous TiO 2 -comprising material having thickness no greater than 50 Angstroms may or may not be in direct physical touching contact therewith. Regardless, such amorphous TiO 2 -comprising material is annealed in the presence of oxygen after its deposition to form crystalline TiO 2 -comprising material. The oxygen may be provided in the form of O 2 , O 3 , and/or by compounds which include oxygen and other elements. Example anneal conditions include those described above for the anneal of the ZrO 2 -comprising material. 
     After the annealing of the amorphous TiO 2 -comprising material, an outer conductive metal capacitor electrode material is deposited outward of the crystalline TiO 2 -comprising material. Example materials include any of those described above with respect to capacitor electrodes  12  and  14 . 
     A combination of the above stated processing steps for the capacitor dielectric region in the stated order in combination with the stated thickness values produces the unexpected result of the capacitor dielectric region having in combination a dielectric constant k of at least 35 and leakage current no greater than 1×10 −7  amps/cm 2  at from −1.1V to +1.1V. In one embodiment, the capacitor dielectric region has a dielectric constant k of at least 40. In one embodiment, the capacitor dielectric region has leakage current no greater than 5×10 −8  amps/cm 2  at from −1.1V to +1.1V. 
     In one embodiment including the above described method, an intervening Al 2 O 3 -comprising material may be deposited outward of the inner conductive metal capacitor electrode material prior to the depositing of the amorphous ZrO 2 -comprising material, and to a thickness of from 2 Angstroms to 10 Angstroms, and in one embodiment to a thickness of from 2 Angstroms to 4 Angstroms. In such event, a sum of the thicknesses of the intervening Al 2 O 3 -comprising material, the crystalline ZrO 2 -comprising material, and the Al 2 O 3 -comprising material deposited over the crystalline ZrO 2 -comprising material totals no more than 70 Angstroms. 
     The intervening Al 2 O 3 -comprising material may or may not be in direct physical touching contact with the crystalline ZrO 2 -comprising material. In one embodiment, an Al x Zr y O z -comprising material is provided between the intervening Al 2 O 3 -comprising material and the crystalline ZrO 2 -comprising material, with the intervening Al 2 O 3 -comprising material and the ZrO 2 -comprising material being in direct physical touching contact with the Al x Zr y O z -comprising material. Any of the above Al x Zr y O z -comprising materials are examples. 
     The crystalline TiO 2 -comprising material may or may not be in direct physical touching contact with the Al 2 O 3 -comprising material formed thereover. In one embodiment, a Ti x Al y O z -comprising material is provided between such Al 2 O 3 -comprising material and the crystalline TiO 2 -comprising material. In one embodiment, such Al 2 O 3 -comprising material and the crystalline TiO 2 -comprising material are in direct physical touching contact with the Ti x Al y O z -comprising material. Any of the Ti x Al y O z -comprising materials described above are examples. 
     Another Al 2 O 3 -comprising material may be deposited outward of the crystalline TiO 2 -comprising material prior to the depositing of the outer conductive metal capacitor electrode material, and to have a thickness of from 2 Angstroms to 10 Angstroms. Such may or may not be formed in direct physical touching contact with the crystalline TiO 2 -comprising material. In one embodiment, a Ti x Al y O z -comprising material is provided between such another/outer Al 2 O 3 -comprising material and the crystalline TiO 2 -comprising material. In one embodiment, such another/outer Al 2 O 3 -comprising material and the crystalline TiO 2 -comprising material are provided in direct physical touching contact with the Ti x Al y O z -comprising material. 
     In additional embodiments, processing may proceed as described in the above methods through the depositing of the Al 2 O 3 -comprising material outward of the crystalline ZrO 2 -comprising material, and to have a thickness of from 2 Angstroms to 16 Angstroms. Then, an amorphous TiO 2 -comprising material is deposited to a thickness greater than 50 Angstroms outward of the Al 2 O 3 -comprising material having thickness of from 2 Angstroms to 16 Angstroms. In such event, the outer conductive metal capacitor electrode material is then deposited outward of the TiO 2 -comprising material at a temperature which transforms the amorphous TiO 2 -comprising material to be crystalline during such act of depositing the outer conductive metal capacitor electrode material. For example, exposure to a temperature of at least 500° C. for at least 1 minute occurring during deposition of the outer conductive metal capacitor electrode material will achieve such amorphous-to-crystalline phase transformation of a TiO 2 -comprising material having thickness greater than 50 Angstroms. 
     Alternately in such additional embodiments, the outer conductive metal capacitor electrode material is deposited outward of the TiO 2 -comprising material at a temperature which does not transform the TiO 2 -comprising material to be crystalline during such act of depositing the outer conductive metal capacitor electrode material. After deposition of the outer conductive metal capacitor electrode material, the substrate is then exposed to a temperature to transform the amorphous TiO 2 -comprising material having thickness greater than 50 Angstroms to be crystalline. Example anneal conditions include exposure to a temperature of at least 500° C. for at least 1 minute. 
     A combination of the above stated processing steps in such additional embodiments for the capacitor dielectric region in the stated order in combination with the stated thickness values produces the unexpected result of the capacitor dielectric region having in combination a dielectric constant k of at least 35 and leakage current no greater than 1×10 −7  amps/cm 2  at from −1.1V to +1.1V. In one embodiment, the capacitor dielectric region has a dielectric constant k of at least 40. In one embodiment, the capacitor dielectric region has leakage current no greater than 5×10 −8  amps/cm 2  at from −1.1V to +1.1V. Further, one or both of an intervening Al 2 O 3 -comprising material and outer/another Al 2 O 3 -comprising material might also be deposited in such additional embodiments as described above. 
     In a further embodiment, the forming of the capacitor dielectric region includes depositing a first Al 2 O 3 -comprising material outward of the inner conductive metal capacitor electrode material, and to have a thickness of from 2 Angstroms to 10 Angstroms. Such first Al 2 O 3 -comprising material may or may not be in direct physical touching contact with the inner conductive metal capacitor electrode material. Example first Al 2 O 3 -comprising material includes any of those described above for materials  18 ,  22  and  32 . 
     A TiO 2 -comprising material is deposited outward of the first Al 2 O 3 -comprising material, and to a thickness of from 40 Angstroms to 80 Angstroms. Example materials include those described above for material  20 . Such may or may not be in direct physical touching contact with the first Al 2 O 3 -comprising material. In one embodiment, a Ti x Al y O z -comprising material is provided between the first Al 2 O 3 -comprising material and the TiO 2 -comprising material. In one embodiment, the first Al 2 O 3 -comprising material and the TiO 2 -comprising material are provided in direct physical touching contact with such Ti x Al y O z -comprising material. 
     A second Al 2 O 3 -comprising material is deposited outward of the TiO 2 -comprising material, and to have a thickness of from 2 Angstroms to 10 Angstroms. Examples include any of those described above for materials  18 / 22 / 32 . The second Al 2 O 3 -comprising material may or may not be in direct physical touching contact with the TiO 2 -comprising material. In one embodiment, a Ti x Al y O z -comprising material is provided between the second Al 2 O 3 -comprising material and the TiO 2 -comprising material. In one embodiment, the second Al 2 O 3 -comprising material and the TiO 2 -comprising material are provided in direct physical touching contact with such Ti x Al y O z -comprising material. 
     An amorphous ZrO 2 -comprising material is deposited to a thickness no greater than 35 Angstroms outward of the second Al 2 O 3 -comprising material. The amorphous ZrO 2 -comprising material is annealed after its deposition to form crystalline ZrO 2 -comprising material having a thickness of no greater than 35 Angstroms. Example anneal conditions include those described above. The ZrO 2 -comprising material may or may not be in direct physical touching contact with the second Al 2 O 3 -comprising material. In one embodiment, an Al x Zr y O z -comprising material is provided between the ZrO 2 -comprising material and the second Al 2 O 3 -comprising material. In one embodiment, the ZrO 2 -comprising material and the second Al 2 O 3 -comprising material are provided in direct physical touching contact with such Al x Zr y O z -comprising material. 
     After the annealing of the amorphous ZrO 2 -comprising material, an outer conductive metal capacitor electrode material is deposited outward of the crystalline ZrO 2 -comprising material. Example materials include any of those described above with respect to capacitor electrodes  12  and  14 . 
     A combination of the above-stated processing steps for the capacitor dielectric region in the further stated embodiments in the stated order in combination with the stated thickness values produces the unexpected result of the capacitor dielectric region having in combination a dielectric constant k of at least 35 and leakage current no greater than 1×10 −7  amps/cm 2  at from −1.1V to +1.1V. In one embodiment, the capacitor dielectric region has a dielectric constant k of at least 40. In one embodiment, the capacitor dielectric region has leakage current no greater than 5×10 −8  amps/cm 2  at from −1.1V to +1.1V. 
     Another Al 2 O 3 -comprising material may be deposited outward of the crystalline ZrO 2 -comprising material prior to the depositing of the outer conductive metal capacitor electrode material, and to have a thickness of from 2 Angstroms to 10 Angstroms. Such may or may not be formed in direct physical touching contact with the crystalline ZrO 2 -comprising material. In one embodiment, an Al x Zr y O z -comprising material is provided between such another/outer Al 2 O 3 -comprising material and the crystalline ZrO 2 -comprising material. In one embodiment, such another/outer Al 2 O 3 -comprising material and the crystalline ZrO 2 -comprising material are provided in direct physical touching contact with the Al x Zr y O z -comprising material. 
     In additional further embodiments, processing may proceed as described above through the depositing of the second Al 2 O 3 -comprising material outward of the TiO 2 -comprising material, and to have a thickness of from 2 Angstroms to 16 Angstroms. Then, an amorphous ZrO 2 -comprising material is deposited to a thickness greater than 35 Angstroms outward of the second Al 2 O 3 -comprising material. In such event, the outer conductive metal capacitor electrode material is then deposited outward of the ZrO 2 -comprising material at a temperature which transforms the amorphous ZrO 2 -comprising material to be crystalline during such act of depositing the outer conductive metal capacitor electrode material. For example, exposure to a temperature of at least 500° C. for at least 1 minute occurring during deposition of the outer conductive metal capacitor electrode material will achieve such amorphous-to-crystalline phase transformation of a ZrO 2 -comprising material having thickness greater than 35 Angstroms. 
     Alternately in such additional further embodiments, the outer conductive metal capacitor electrode material is deposited outward of the ZrO 2 -comprising material at a temperature which does not transform the ZrO 2 -comprising material to be crystalline during such act of depositing the outer conductive metal capacitor electrode material. After deposition of the outer conductive metal capacitor electrode material, the substrate is then exposed to a temperature to transform the amorphous ZrO 2 -comprising material having thickness greater than 35 Angstroms to be crystalline. Example anneal conditions include exposure to a temperature of at least 500° C. for at least 1 minute. 
     A combination of the above-stated processing steps for the capacitor dielectric region in the last stated embodiments in the stated order in combination with the stated thickness values produces the unexpected result of the capacitor dielectric region having in combination a dielectric constant k of at least 35 and leakage current no greater than 1×10 −7  amps/cm 2  at from −1.1V to +1.1V. In one embodiment, the capacitor dielectric region has a dielectric constant k of at least 40. In one embodiment, the capacitor dielectric region has leakage current no greater than 5×10 −8  amps/cm 2  at from −1.1V to +1.1V. 
     In compliance with the statute, the subject matter disclosed herein has been described in language more or less specific as to structural and methodical features. It is to be understood, however, that the claims are not limited to the specific features shown and described, since the means herein disclosed comprise example embodiments. The claims are thus to be afforded full scope as literally worded, and to be appropriately interpreted in accordance with the doctrine of equivalents.