Source: http://www.google.com/patents/US6028264?dq=6,205,432
Timestamp: 2015-05-04 01:46:22
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Matched Legal Cases: ['application No. 08', 'application No. 08', 'application No. 06', 'application No. 5', 'application No. 5', 'application No. 5', 'application No. 5', 'application No. 5', 'application No. 5', 'application No. 08', 'application No. 07', 'application No. 5', 'application No. 5', 'application No. 5', 'application No. 5', 'application No. 5', 'application No. 5', 'application No. 5', 'application No. 5', 'application No. 5', 'application No. 5', 'art 1', 'art 1']

Patent US6028264 - Semiconductor having low concentration of carbon - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsNon-single-crystalline semiconductor material or device containing carbon impurity in a concentration less than 4�1018 atoms/cm3....http://www.google.com/patents/US6028264?utm_source=gb-gplus-sharePatent US6028264 - Semiconductor having low concentration of carbonAdvanced Patent SearchPublication numberUS6028264 APublication typeGrantApplication numberUS 08/910,465Publication dateFeb 22, 2000Filing dateJul 25, 1997Priority dateAug 24, 1982Fee statusLapsedAlso published asUS5468653Publication number08910465, 910465, US 6028264 A, US 6028264A, US-A-6028264, US6028264 A, US6028264AInventorsShunpei YamazakiOriginal AssigneeSemiconductor Energy Laboratory Co., Ltd.Export CitationBiBTeX, EndNote, RefManPatent Citations (71), Non-Patent Citations (324), Referenced by (4), Classifications (31), Legal Events (3) External Links: USPTO, USPTO Assignment, EspacenetSemiconductor having low concentration of carbon
US 6028264 AAbstract
Non-single-crystalline semiconductor material or device containing carbon impurity in a concentration less than 4�1018 atoms/cm3.
1. A non-single-crystalline semiconductor material of an intrinsic conductivity type, wherein at least a portion of said semiconductor material is added with either or both of a halogen and hydrogen as a dangling bond neutralizer and wherein at least a portion of said material contains carbon in a concentration of less than 4�1018 atoms/cm3.
3. A semiconductor device comprising:a substrate; a non-single crystalline semiconductor layer of an intrinsic conductivity type formed with respect to said substrate; wherein at least a portion of said semiconductor layer contains carbon in a concentration of less than 4�1018 atoms/cm3. 4. The semiconductor device of claim 3 wherein said semiconductor layer comprises a silicon semiconductor.
6. In a semiconductor device formed on a substrate, which utilizes a non-single-crystalline semiconductor material comprising silicon of an intrinsic conductivity type, at least a portion of said semiconductor material containing carbon in a low concentration of less than 4�1018 atoms/cm3.
8. A semiconductor device comprising:a substrate; a non-single-crystal semiconductor layer formed with respect to said substrate, said layer comprising an intrinsic non-single-crystal silicon containing semiconductor in which hydrogen or halogen is added; wherein at least a portion of said semiconductor layer contains carbon in a low concentration of less than 4�1018 atoms/cm3. 9. An amorphous semiconductor material of an intrinsic conductivity type, wherein at least a portion of said semiconductor material is added with either or both of a halogen and hydrogen as a dangling bond neutralizer and wherein at least a portion of said material contains carbon in a concentration of less than 4�1018 atoms/cm3.
11. A semiconductor device comprising:a substrate; an amorphous semiconductor layer of an intrinsic conductivity type formed with respect to said substrate; wherein at least a portion of said semiconductor layer contains carbon in a concentration of less than 4�1018 atoms/cm3. 12. The semiconductor device of claim 11 wherein said semiconductor layer comprises a silicon semiconductor.
14. In a semiconductor device formed on a substrate, which utilizes an amorphous semiconductor material comprising silicon of an intrinsic conductivity type, at least a portion of said amorphous semiconductor material containing carbon in a low concentration of less than 4�1018 atoms/cm3.
16. A semiconductor device comprising:a substrate; an amorphous semiconductor layer formed with respect to said substrate, said layer comprising an intrinsic amorphous silicon containing semiconductor in which hydrogen or halogen is added; wherein at least a portion of said semiconductor layer contains carbon in a low concentration of less than 4�1018 atoms/cm3. 17. The semiconductor material of claims 1 or 9 wherein at least a portion of said semiconductor material of the intrinsic conductivity type is doped with boron.
The non-single-crystal semiconductor layer 4 is formed by a CVD method which employs a semiconductor material gas composed of a hydride or halide of a semiconductor, such as Six Ge1-x, where 0<x<1 or Ge, and an impurity material gas composed of a hydride or halide of a P-type impurity, for instance, diborane (B2 H6), the CVD method may or may not employ a glow discharge (plasma), or a light. In this case, the non-single-crystal semiconductor layer 4 has a P-type impurity (boron) introduced therein in a concentration as above about 1�1018 and as high as 1�1019 to 6�1020 atoms/cm3, as shown in FIG. 2B.
The non-single-crystal semiconductor layer 5 is formed by a CVD method which uses a semiconductor raw material gas composed of a hydride or halide of silicon, for example, Sin H2n+2 (where n is greater than or equal to 1), or SiFm (where m is greater than or equal to 2), and a deposit material gas composed of a hydride or halide of a P-type impurity, for instance, diborane (B2 H6), the CVD method may or may not employ a glow discharge (plasma), or a light. In this case, by decreasing the concentration of the deposit material gas relative to the concentation of the semiconductor raw material gas within a range of less than 5 ppm with the lapse of time, the non-single-crystal semiconductor layer 5 is formed having introduced thereinto the a P-type impurity (boron), the concentration of which linearly and continuously decreases in the thickness direction of the layer towards the non-single-crystal semiconductor layer 6 as shown in FIG. 2B. The concentration of the P-type impurity in the non-single-crystal semiconductor layer 5 is high on the side of the non-single-crystal semiconductor layer 4 as compared with the impurity concentration on the side of the non-single-crystal semiconductor layer 6. The ratio of the impurity concentration in the layer 5 at one end thereof adjacent the layer 6 to the concentration at the other end adjacent the layer 4 is 1/10 to 1/100, preferably, 1/20 to 1/40. In practice, the P-type impurity (boron) has a concentration of 2�1015 to 2�1017 atoms/cm3 at the end of the layer 5 adjacent the layer 4 and a concentration below 1�1015 atoms/cm3 at the end of the layer 5 adjacent the layer 6.
The non-single-crystal semiconductor layer 5 is formed by the abovesaid CVD method. In this case, the semiconductor raw material gas is one that is obtained by passing a semiconductor raw material gas through a molecular sieve or zeolite which adsorbs oxygen, and/or carbon and/or phosphorus. Accordingly, the non-single-crystal semiconductor layer 5 is formed to contain oxygen at a concentration less than 5�1019 and as low as 5�10 18 atoms/cm3, and/or carbon at a concentration less than 4�1018 and as low as 4�1015 atoms/cm3, and/or phosphorus at a concentration at least as low as 5�1015 atoms/cm3.
The non-single-crystal semiconductor layer 6 is formed by a CVD method which employs a semiconductor raw material gas composed of a hydride or halide of silicon, for example, Sin H2n+2 (where n is greater than or equal to 1) or SiFm (where m is greater than or equal to 2), and an impurity material gas composed of a hydride or halide of an N-type impurity, for instance, phosphine (PH3), The CVD method may or may not employ a glow discharge (plasma)/or light. In this case, the non-single-crystal semiconductor layer 6 has an N-type impurity (phosphorus) at a concentration of 1�1019 to 6�1020 atoms/cm3, as shown in FIG. 2.
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Ferguson, Jr.81 *Declaration Of Robert Cote In Support Of SEL s Motion For Summary Judgment Dismissing Samsung s Inequitable Conduct Defense To The 636 Patent.82Declaration Of Robert Cote In Support Of SEL's Motion For Summary Judgment Dismissing Samsung's Inequitable Conduct Defense To The '636 Patent.83 *Defendant s Motion for Summary Judgment Declaring U.S. application No. 5,543,636 Invalid For Failure to Enable.84Defendant's Motion for Summary Judgment Declaring U.S. application No. 5,543,636 Invalid For Failure to Enable.85 *Defendants Reply In Support of Motion For Summary Judgment Declaring U.S. application No. 5,543,636 For Failure To Enable.86Defendants' Reply In Support of Motion For Summary Judgment Declaring U.S. application No. 5,543,636 For Failure To Enable.87 *Documents discussed in Judge Ellis opinion C.C. Tsai, et al., Amorphous Si Prepared in a UHV Plasma Deposition System , Journal on Non Crystalline Solids, Proceedings of the Tenth International Conference on Amorphous and Liquid Semiconductors in Tokyo, vols. 59&60, pp. 731 734 (1983) attached to IDS as Exhibit G.88 *Documents discussed in Judge Ellis opinion Full translation of Japanese Patent Document 56 135968 (Canon 968) attached to IDS as Exhibit F.89 *Documents discussed in Judge Ellis opinion Japanese Patent Document 56 135968 (Canon 968) attached to IDS as Exhibit D.90 *Documents discussed in Judge Ellis opinion Japanese Patent Document 58 2073 (the Sony 2073 reference) attached to IDS as Exhibit K.91 *Documents discussed in Judge Ellis opinion Japanese Patent Document 59 35423 (the 423 reference) attached to IDS as Exhibit H.92 *Documents discussed in Judge Ellis opinion Japanese Patent Document 59 35488 (the 488 reference) attached to IDS as Exhibit I.93 *Documents discussed in Judge Ellis opinion Partial translation of Japanese Patent Document 56 135968 (Canon 968) attached to IDS as Exhibit E.94 *Documents discussed in Judge Ellis opinion Presentation materials from speech by Dr. Yamazaki in Reston, Virginia in May, 1983 attached to IDS as Exhibit L.95 *Documents discussed in Judge Ellis opinion U.S. application No. 5,521,400 to Yamazaki (the 400 patent) attached to IDS as Exhibit J.96Documents discussed in Judge Ellis' opinion--C.C. Tsai, et al., "Amorphous Si Prepared in a UHV Plasma Deposition System", Journal on Non-Crystalline Solids, Proceedings of the Tenth International Conference on Amorphous and Liquid Semiconductors in Tokyo, vols. 59&60, pp. 731-734 (1983) attached to IDS as Exhibit G.97Documents discussed in Judge Ellis' opinion--Full translation of Japanese Patent Document 56-135968 (Canon '968) attached to IDS as Exhibit F.98Documents discussed in Judge Ellis' opinion--Japanese Patent Document 56-135968 (Canon '968) attached to IDS as Exhibit D.99Documents discussed in Judge Ellis' opinion--Japanese Patent Document 58-2073 (the Sony 2073 reference) attached to IDS as Exhibit K.100Documents discussed in Judge Ellis' opinion--Japanese Patent Document 59-35423 (the '423 reference) attached to IDS as Exhibit H.101Documents discussed in Judge Ellis' opinion--Japanese Patent Document 59-35488 (the '488 reference) attached to IDS as Exhibit I.102Documents discussed in Judge Ellis' opinion--Partial translation of Japanese Patent Document 56-135968 (Canon '968) attached to IDS as Exhibit E.103Documents discussed in Judge Ellis' opinion--Presentation materials from speech by Dr. Yamazaki in Reston, Virginia in May, 1983 attached to IDS as Exhibit L.104Documents discussed in Judge Ellis' opinion--U.S. application No. 5,521,400 to Yamazaki (the '400 patent) attached to IDS as Exhibit J.105E.H. 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Ellis, III in C.A. No. 96 1460 A attached to IDS as Exhibit C.206Memorandum Opinion Published Apr. 15, 1998 of Judge T.S. Ellis, III in C.A. No. 96-1460-A attached to IDS as Exhibit C.207Moller et al., "Low level baron doping and tight induced effects in amorphous silicon," 16th IEEE Photovoltaic Specialists Conference (1982), pp. 1376-1380, published Jan. 1993.208 *Moller et al., Low level baron doping and tight induced effects in amorphous silicon, 16th IEEE Photovoltaic Specialists Conference (1982), pp. 1376 1380, published Jan. 1993.209 *Motion For Summary Judgment Dismissing Samsung s Inequitable Conduct Defense To The 636 Patent.210Motion For Summary Judgment Dismissing Samsung's Inequitable Conduct Defense To The '636 Patent.211N. Sol et al., J. Non-Crystalline Solids, 35 & 36, pp. 291, 1980.212N. 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Hirose, Amorphous Silicon , Nikkei Electronics Special Issue, pp. 163 179 (Dec. 20, 1982).323 *Zeolite documentation from Union Carbide (SEC014384 SEC014387).324Zeolite documentation from Union Carbide (SEC014384-SEC014387).* Cited by examinerReferenced byCiting PatentFiling datePublication dateApplicantTitleUS6610362 *Nov 20, 2000Aug 26, 2003Intel CorporationMethod of forming a carbon doped oxide layer on a substrateUS6762435Jun 9, 2003Jul 13, 2004Intel CorporationSemiconductor device with boron containing carbon doped silicon oxide layerUS8076175Feb 25, 2008Dec 13, 2011Suniva, Inc.Method for making solar cell having crystalline silicon P-N homojunction and amorphous silicon heterojunctions for surface passivationUS8945976Nov 30, 2011Feb 3, 2015Suniva, Inc.Method for making solar cell having crystalline silicon P�N homojunction and amorphous silicon heterojunctions for surface passivation* Cited by examinerClassifications U.S. Classification136/258, 257/E31.048, 257/E31.014, 252/62.30E, 257/55, 257/E31.012, 257/56, 252/501.1, 257/65, 252/62.30R, 257/53, 257/458, 257/E31.042International ClassificationH01L31/075, H01L31/0392, H01L31/0288, H01L31/028, H01L31/0376Cooperative ClassificationY10S438/931, Y02E10/547, H01L31/075, H01L31/028, H01L31/0288, Y02E10/548, H01L31/03762, H01L31/03921European ClassificationH01L31/028, H01L31/0376B, H01L31/0392B, H01L31/0288, H01L31/075Legal EventsDateCodeEventDescriptionApr 20, 2004FPExpired due to failure to pay maintenance feeEffective date: 20040222Feb 23, 2004LAPSLapse for failure to pay maintenance feesSep 10, 2003REMIMaintenance fee reminder mailedRotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services