Patent Publication Number: US-2022231188-A1

Title: Method for large scale growth and fabrication of iii-nitride devices on 2d-layered h-bn without spontaneous delamination

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application claims priority, and benefit under 35 U.S.C. § 119(e), to U.S. Provisional Patent Application No.  62 / 851 , 997  filed 23 May 2019, which is hereby hereby incorporated by reference in its entirety as if fully set forth below. 
    
    
     FIELD OF DISCLOSURE 
     The disclosed technology relates generally to nitride-based optoelectronic and electronic devices, and more particularly to, systems and methods for growing and releasing nitride-based LED devices using a patterned growth substrate. 
     BACKGROUND 
     With the electronics industry entering an era of acceleration and disruption, the role of heterogenous integration can be significant in response to the driving forces of several emerging fields, including IoT, smart mobile, and intelligent automotive. One approach to heterogeneous integration can include the transfer of epilayers from their native growth substrate to a dissimilar receiving substrate. A range of epitaxial layer separation approaches have been developed including laser liftoff and chemical liftoff which dissolves a sacrificial layer to perform heterogenous integration. In particular, van der Waals epitaxy of III-nitrides on graphene and device transfer on foreign substrates have been demonstrated. 
     However, for a manufacturing setting, this latter technique regarding van der Waals epitaxy of III-nitrides on graphene can require significant capital expenses since graphene templates have to be prefabricated in a separate step. More recently, the use of 2D hexagonal boron nitride (“h-BN”) as a mechanical release layer has been demonstrated to be a promising liftoff technique for the hybrid integration of III-nitride devices. H-BN is a III-nitride material which can exhibit a 2D structure when grown as monolayers of nanometer thicknesses, similar to graphene. It can be particularly compatible with growth of wurtzite III-N devices in a single epitaxial run. The h-BN based liftoff technique can provide several advantages including 1) very rapid process, 2) no costly excimer laser is needed, 3) no laser damage, resulting in smooth separated surfaces, and 4) no need for time consuming and hazardous chemical treatments. Moreover, h-BN is chemically inert and mechanically stable at elevated temperatures and thus can have no constraints on growth conditions of subsequent epilayers above when compared to other growth and liftoff processes. In order for this h-BN based liftoff technique to reach industrial maturity, innovative solutions are needed to facilitate mass production while preserving devices performance. 
     Accordingly, a need exists for systems and methods for mass production of high-quality nitride-based LED devices that can be grown on a growth substrate, released from the growth substrate, and transferred to a receiving substrate without spontaneous delamination. 
     SUMMARY 
     The present disclosure relates to a scalable method of growing and releasing nitride-based LED devices. A growth substrate can be subdivided into delimited areas chosen for nitride-based LED device locations. By subdividing the growth substrate, separation of the grown nitride-based LED devices can be enabled and device-by-device pick-and-place release and transfer of the nitride-based LED devices from the growth substrate to the receiving substrate can occur without the need for a dicing step. 
     The disclosed technology can include a method of growing and releasing nitride-based LED devices including providing a growth substrate; subdividing the growth substrate into a plurality of delimited areas; growing a mechanical release layer on the growth substrate; growing a set of nitride-based LED devices on the mechanical release layer; individually selecting a nitride-based LED device from the set of nitride-based LED devices; releasing the selected nitride-based LED device from the growth substrate; and transferring the selected nitride-based LED device to a receiving substrate. 
     In any of the embodiments disclosed herein, the growth substrate can be a sapphire wafer. 
     In any of the embodiments disclosed herein, the growth substrate can have a diameter of between approximately two inches and six inches. 
     In any of the embodiments disclosed herein, the growth substrate can be reusable. 
     In any of the embodiments disclosed herein, the growth substrate can be subdivided into a plurality of delimited areas using a grid. 
     In any of the embodiments disclosed herein, the grid can include dielectric material. 
     In any of the embodiments disclosed herein, the grid can include silicon dioxide. 
     In any of the embodiments disclosed herein, the grid can have a thickness of between approximately 100 nanometers and approximately 500 nanometers. 
     In any of the embodiments disclosed herein, each of the delimited areas of the plurality of delimited areas can have an area of between approximately one micron squared and approximately one centimeter squared. 
     In any of the embodiments disclosed herein, the area of each of the delimited areas of the plurality of delimited areas can be equal. 
     In any of the embodiments disclosed herein, each of the delimited areas of the plurality of delimited areas can have a square cross-section. 
     In any of the embodiments disclosed herein, the mechanical release layer can include h-BN. 
     In any of the embodiments disclosed herein, the mechanical release layer can have a thickness of between approximately three nanometers and approximately twenty nanometers. 
     In any of the embodiments disclosed herein, growing the mechanical release layer on the growth substrate can occur in a metal-organic chemical vapor deposition growth chamber. 
     In any of the embodiments disclosed herein, growing the mechanical release layer on the growth substrate can occur at a temperature of between approximately 1000° C. to approximately 1400° C. 
     In any of the embodiments disclosed herein, the mechanical release layer can laterally grow on the growth substrate. 
     In any of the embodiments disclosed herein, growing the set of nitride-based LED devices can include growing a nucleation layer on top of the mechanical release layer; growing an n-layer on top of the nucleation layer; positioning a plurality of quantum wells on top of the n-layer; and growing a p-layer on top of the plurality of quantum wells. 
     In any of the embodiments disclosed herein, the nucleation layer can include aluminum gallium nitride. 
     In any of the embodiments disclosed herein, the nucleation layer can have a thickness of approximately 250 nanometers. 
     In any of the embodiments disclosed herein, the n-layer can have a thickness of approximately 500 nanometers. 
     In any of the embodiments disclosed herein, the n-layer can include gallium nitride. 
     In any of the embodiments disclosed herein, the gallium nitride of the n-layer can be doped with silicon. 
     In any of the embodiments disclosed herein, the plurality of quantum wells can include one or more periods, each period including a barrier layer and a quantum well layer. 
     In any of the embodiments disclosed herein, the plurality of quantum wells can include five periods. 
     In any of the embodiments disclosed herein, the barrier layer can include gallium nitride. 
     In any of the embodiments disclosed herein, the barrier layer can include alloys of gallium nitride, including, but not limited to, AlGaN and InGaN. 
     In any of the embodiments disclosed herein, the barrier layer can have a thickness of between approximately ten nanometers and approximately twenty nanometers. 
     In any of the embodiments disclosed herein, the quantum well layer can include indium gallium nitride. 
     In any of the embodiments disclosed herein, the quantum well layer can have a thickness of between approximately two nanometers and approximately four nanometers. 
     In any of the embodiments disclosed herein, the p-layer can have a thickness of approximate 250 nanometers. 
     In any of the embodiments disclosed herein, the p-layer can include gallium nitride. 
     In any of the embodiments disclosed herein, the gallium nitride of the p-layer can be doped with magnesium. 
     In any of the embodiments disclosed herein, the set of nitride-based LED devices can include one or more nitride-based devices, each nitride-based LED device being grown in a delimited area of the plurality of delimited areas. 
     In any of the embodiments disclosed herein, releasing the selected nitride-based LED device can include positioning a liquid dissolvable tape on a support of a device capable of moving linearly with respect to a vertical axis; lowering the support such that the liquid dissolvable tape contacts the selected nitride-based LED device; affixing the selected nitride-based LED device to the liquid dissolvable tape; and removing the selected nitride-based LED device from the growth substrate by vertically lifting the support. 
     In any of the embodiments disclosed herein, the liquid dissolvable tape can be water dissolvable. 
     In any of the embodiments disclosed herein, the liquid dissolvable tape can dissolve in water within approximately one minute. 
     In any of the embodiments disclosed herein, releasing the selected nitride-based LED device can include dissolving the liquid dissolvable tape from the nitride-based LED device after the selected nitride-based LED device is transferred to the receiving substrate. 
     In any of the embodiments disclosed herein, the receiving substrate can be a flexible metallic tape. 
     In any of the embodiments disclosed herein, the receiving substrate can be a flexible aluminum tape. 
     In any of the embodiments disclosed herein, the selected nitride-based LED device can remain substantially intact when transferring the selected nitride-based LED device to the receiving substrate. 
     In any of the embodiments disclosed, herein the selected nitride-based LED device can remain free of cracks or fractures when transferring the selected nitride-based LED device to the receiving substrate. 
     In any of the embodiments disclosed herein, the selected nitride-based LED device can be transferred to the receiving substrate such that a p-layer of the selected nitride-based LED device is facing upward. 
     In any of the embodiments disclosed herein, the selected nitride-based LED device can exhibit a blue light emission of between approximately 400 nanometers and approximately 450 nanometers. 
     In any of the embodiments disclosed herein, the method of growing and releasing nitride-based LED devices can further include transferring the selected nitride-based LED device to an integrated circuit. 
     The disclosed technology can also include a nitride-based LED device made by a method according to any of the embodiments disclosed herein. 
     These and other aspects of the present invention are described in the Detailed Description below and the accompanying figures. Other aspects and features of embodiments of the present invention will become apparent to those of ordinary skill in the art upon reviewing the following description of specific, exemplary embodiments of the present invention in concert with the figures. While features of the present invention may be discussed relative to certain embodiments and figures, all embodiments of the present invention can include one or more of the features discussed herein. Further, while one or more embodiments may be discussed as having certain advantageous features, one or more of such features may also be used with the various embodiments of the invention discussed herein. In similar fashion, while exemplary embodiments may be discussed below as device, system, or method embodiments, it is to be understood that such exemplary embodiments can be implemented in various devices, systems, and methods of the present invention 
    
    
     
       BRIEF DESCRIPTION OF THE FIGURES 
       Reference will now be made to the accompanying figures, which are not necessarily drawn to scale, and wherein: 
         FIG. 1  is a diagram of a growth substrate including a nitride-based LED device, according to some aspects of the present disclosure. 
         FIGS. 2A and 2B  are illustrations of a growth substrate subdivided into delimited areas, according to some aspects of the present disclosure. 
         FIG. 3  is a scanning electron microscope (SEM) image of a mechanical release layer grown on a growth substrate, according to some aspects of the present disclosure. 
         FIG. 4A  is a SEM image of nitride-based LED devices, according to some aspects of the present disclosure. 
         FIG. 4B  is a high-resolution diffraction scan of a nitride-based LED device, according to some aspects of the present disclosure. 
         FIG. 4C  is a cathodoluminescence spectrum for a nitride-based LED device, according to some aspects of the present disclosure. 
         FIGS. 5A and 5B  are optical microscope images of nitride-based LED devices, according to some aspects of the present disclosure. 
         FIG. 6  is a graphical representation of current and voltage of a nitride-based LED device, according to some aspects of the present disclosure. 
         FIGS. 7A-7C  are images of selectively releasing and transferring nitride-based LED devices from a growth substrate, according to some aspects of the present disclosure. 
         FIG. 8A  is a microscope image of a nitride-based LED device released from a growth substrate, according to some aspects of the present disclosure. 
         FIG. 8B  is a microscope image of a nitride-based LED device transferred to a receiving substrate, according to some aspects of the present disclosure. 
         FIG. 8C  is an illustration of a nitride-based LED device transferred to an integrated circuit, according to some aspects of the present disclosure. 
         FIG. 9  is a graphical representation of current and voltage of a nitride-based LED device before transfer to a receiving substrate and after transfer to a receiving substrate, according to some aspects of the present disclosure. 
         FIG. 10  is a flow diagram outlining the method of growing and releasing nitride-based LED devices, according to some aspects of the present disclosure. 
     
    
    
     DETAILED DESCRIPTION 
     The disclosed technology relates to a method of growing nitride-based LED devices on a growth substrate and transferring an individually selected nitride-based LED device to a receiving substrate. The method can include subdividing the growth substrate into delimited areas using a patterned grid. A mechanical release layer can be grown on the growth substrate. A set of nitride-based LED devices can be grown on the mechanical release layer, such that a nitride-based LED device can be grown in each delimited area. An individual nitride-based LED device can be selected and released from the growth substrate. The selected nitride-based LED device can then be transferred to the receiving substrate. 
     The disclosed technology will be described more fully hereinafter with reference to the accompanying drawings. This disclosed technology can, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein. The components described hereinafter as making up various elements of the disclosed technology are intended to be illustrative and not restrictive. Many suitable components that would perform the same or similar functions as components described herein are intended to be embraced within the scope of the disclosed electronic devices and methods. Such other components not described herein may include, but are not limited to, for example, components developed after development of the disclosed technology. 
     In the following description, numerous specific details are set forth. But it is to be understood that examples of the disclosed technology can be practiced without these specific details. In other instances, well-known methods, structures, and techniques have not been shown in detail in order not to obscure an understanding of this description. References to “one embodiment,” “an embodiment,” “example embodiment,” “some embodiments,” “certain embodiments,” “various embodiments,” etc., indicate that the embodiment(s) of the disclosed technology so described may include a particular feature, structure, or characteristic, but not every embodiment necessarily includes the particular feature, structure, or characteristic. Further, repeated use of the phrase “in one embodiment” does not necessarily refer to the same embodiment, although it may. 
     Throughout the specification and the claims, the following terms take at least the meanings explicitly associated herein, unless the context clearly dictates otherwise. The term “or” is intended to mean an inclusive “or.” Further, the terms “a,” “an,” and “the” are intended to mean one or more unless specified otherwise or clear from the context to be directed to a singular form. 
     Unless otherwise specified, the use of the ordinal adjectives “first,” “second,” “third,” etc., to describe a common object, merely indicate that different instances of like objects are being referred to, and are not intended to imply that the objects so described should be in a given sequence, either temporally, spatially, in ranking, or in any other manner. 
       FIG. 1  is a diagram of a growth substrate  102  including grown nitride-based LED devices  108 . The nitride-based LED devices  108  can include group III nitride compositions, including aluminum nitride, gallium nitride, and indium nitride, and various combinations thereof. Group III nitrides can have advantageous physical properties that allow these compositions to be used in microelectronics and optoelectronics. These physical properties can include, a wide bandgap, high saturated drift rate, high breakdown voltage, high thermal conductivity, and chemical and thermal stability. 
     A mechanical release layer  104  can be grown on the growth substrate  102 . A nucleation layer  106  can be grown on the mechanical release layer  104 . The nitride-based LED devices  108  can be grown on the nucleation layer  106 . The nitride-based LED devices  108  can include an n-layer  110 , a plurality of quantum wells  112 , and a p-layer  118 . The plurality of quantum wells  112  can include alternating barrier layers  114  and quantum well layers  116 . 
       FIGS. 2A and 2B  illustrate an example growth substrate  102 . The growth substrate  102  can be any growth substrate in which the mechanical release layer can grow upon. In some embodiments, the growth substrate  102  can be a sapphire wafer. In some embodiments, the growth substrate  102  can be silicon, silicon carbide, or diamond. The growth substrate  102  can have a diameter of approximately two inches and approximately six inches. In some embodiments, the diameter of the growth substrate  102  can only be limited by the diameter of commercially available growth substrates  102 . The growth substrate  102  can be any shape. In some embodiments, the growth substrate  102  can have a square cross-section, as illustrated in  FIG. 2A . In some embodiments the growth substrate  102  can have a substantially circular cross-section, as illustrated in  FIG. 2B . The growth substrate  102  can be subdivided into a plurality of delimited areas  204  using a grid  202 . In some embodiments, the grid  202  can comprise silicon dioxide (“SiO 2 ”). In some embodiments, the grid  202  can comprise silicon nitride or any other dielectric material. The grid  202  can have a thickness of between approximately 100 nanometers and approximately 500 nanometers. The grid  202  can enable separation of the nitride-based LED devices  108  grown and can facilitate a scalable device-by-device, pick-and-place technique without the need for a dicing step. 
     Each of the delimited areas  204  can define an area in which a nitride-based LED device  108  can be grown. The area of each of the delimited areas  204  can be between approximately one micron squared and approximately one centimeter squared. In some embodiments, the area of each of the delimited areas  204  can be based on a desired area of the nitride-based LED device  108 . In some embodiments, the area of each of the delimited areas  204  can be less than one micron squared. In some embodiments, the area of each of the delimited areas  204  can be any area in which no delamination occurs. In some embodiments, the area of each of the delimited areas  204  can be the same. Alternatively, a first delimited area can have a different area than a second delimited area. Each delimited area  204  can have any shape cross-section, including a square cross-section, a circular cross-section, or a polygonal cross-section. In some embodiments, the delimited areas  204  can have a shape corresponding to a shape of the subsequently grown nitride-based LED device  108 . The grid  202  can subdivide the growth substrate  102  into any number of delimited areas  204 . In some embodiments, the number of delimited areas  204  can be based on a desired number of nitride-based LED devices  108 . In some embodiments, the number of delimited areas  204  can be between approximately 12 and 20. 
       FIG. 2B  is an optical microscope image of the growth substrate  102  subdivided into delimited areas  204  by the grid  202 . Within each delimited area  204  of the growth substrate  102 , a nitride-based LED device  108  can be grown. The grid  202  can allow each grown nitride-based LED device  108  to be physically insulated from each other, such that release and transfer of the nitride-based LED devices  108  can be completed with ease. Accordingly, the method of fabricating and subsequently releasing and transferring nitride-based LED devices can be increased in scale to industrial levels. Although,  FIGS. 2A and 2B  illustrate one example pattern produced by the grid  202 , it is contemplated that any pattern can be produced by a corresponding patterned grid  202 . 
       FIG. 3  illustrates a scanning electron microscope (SEM) image of the mechanical release layer  104  grown on the growth substrate  102  from a tilted and planar perspective. The mechanical release layer  104  can include hexagonal boron nitride (“h-BN”). The h-BN mechanical release layer  104  can laterally grow such that multiple layers of h-BN can be formed. The layers of h-BN can be stacked together via van der Waals interactions and can be exfoliated into thin 2D layers. The h-BN mechanical release layer  104  can provide an optimized van der Waals surface for which a set of nitride-based LED devices  108  can grow upon. Because van der Waals interactions can be relatively easy to break, an individual nitride-based LED device  108  can be selected from the set of nitride-based LED devices  108 , released, and transferred from the growth substrate  102 . 
     The mechanical release layer  104  can be grown to many different thicknesses. In some embodiments, the mechanical release layer  104  can be grown to a thickness of between approximately 3 nanometers and approximately 20 nanometers. The mechanical release layer  104  can be grown on the growth substrate  102  within a metal-organic chemical vapor deposition growth chamber of any size. The mechanical release layer  104  can be grown on the growth substrate  102  at a temperature of between approximately 1000° C. to approximately 1400° C. 
     The growth of the mechanical release layer  104  can be localized, such that the mechanical release layer  104  can grow at a first growth rate on the growth substrate  102  and the mechanical release layer  104  can grow at a second growth rate on the grid  202 . The first growth rate can be greater than the second growth rate. The mechanical release layer  104  grown directly on the growth substrate  102  can be a high-quality, laterally grown, h-BN layer. Portions of the mechanical release layer  104  grown on the grid  202  can include randomly oriented BN. The randomly oriented boron nitride can reduce the quality of the h-BN mechanical release layer  104  as compared to the h-BN mechanical release layer  104  grown laterally on the growth substrate  102 . In some embodiments, the second growth rate can be insubstantial. In this configuration, the mechanical release layer  104  can be insubstantially present on the grid  202 . 
       FIG. 4A  illustrates the growth of the nitride-based LED devices  108  on the growth substrate  102 . To grow the nitride-based LED devices  108  a nucleation layer  106  can first be grown on the mechanical release layer  104 . The nucleation layer  106  can comprise aluminum-gallium-nitride (“AlGaN”). In some embodiments, the nucleation layer  106  can comprise AlGaN having an aluminum mole fraction of approximately 14%. In some embodiments, the nucleation layer  106  can have a thickness of approximately 250 nanometers. 
     The nitride-based LED devices  108  can be grown on the nucleation layer  106 . The nitride-based LED devices  108  can include an n-layer  110 , a plurality of quantum wells  112 , and a p-layer  118 . The n-layer  110  can be grown on the nucleation layer  106 . The n-layer  110  can include gallium nitride (“GaN”). In some embodiments, the GaN of the n-layer  110  can be doped with silicon, sulfur, or any other n-doping material. The n-layer  110  can have a thickness of approximately 500 nanometers. The plurality of quantum wells  112  can include alternating barrier layers  114  and quantum well layers  116 . The barrier layers  114  and the quantum well layer  116  can extend longitudinally and can be substantially parallel to one another. The barrier layers  114  can include GaN. Each barrier layer  114  can have a thickness of between approximately 10 nanometers and approximately 20 nanometers. The quantum well layers  116  can include indium gallium nitride (“InGaN”), aluminum gallium nitride (“AlGaN”), or any combination of AlGaInN. In some embodiments, the composition chosen for the quantum well layers  116  can be based on the desired light emitting characteristics of the nitride-based LED device  108 . By way of example, when the quantum well layers  116  include AlGaN, the nitride-based LED device  108  can emit ultraviolet light, and when the quantum well layers  116  include AlGaInN, the nitride-based LED device  108  can emit light within a range from visible light to deep ultraviolet light. Each quantum well layer  116  can have a thickness of between approximately 2 nanometers and approximately 4 nanometers. The plurality of quantum wells  112  can include any number of alternating barrier layers  114  and quantum well layer  116 , with one barrier layer  114  and an adjacent quantum well layer  116  being defined as a period. In some embodiments, the plurality of quantum wells  112  can include five periods, such that there are five alternating barrier layers  114  and quantum well layers  116 , as illustrated in  FIG. 1 . The p-layer  114  of the nitride-based device  108  can be grown above the plurality of quantum wells  112 . The p-layer  114  can have a thickness of approximately 250 nanometers. The p-layer  114  can comprise GaN. In some embodiments, the GaN of the p-layer  118  can be doped with magnesium. 
     As illustrated in  FIG. 4A , the nitride-based LED devices  108  can avoid growing on the grid  202 . In this sense, the nitride-based LED devices  108  can be selectively grown in regions where layered h-BN is deposited and can avoid growing on randomly oriented BN on the silicon dioxide grid  202 . By not readily growing on the grid  202 , the nitride-based LED devices  108  can have sharp side walls  402  along each side of the grid  202 . In this configuration, the nitride-based LED devices  108  can be easily separated and released after fabrication. 
       FIG. 4B  illustrates a high-resolution X-ray diffraction scan of the grown nitride-based LED devices  108 . The scan illustrates the nitride-based LED device  108  can peak up to the fourth order. The scan also illustrates peaks from the GaN n-layer  110  and the GaN p-layer  118 , and the AlGaN nucleation layer  106 . 
       FIG. 4C  illustrates a cathodoluminescence spectrum for the plurality of quantum wells  112  at room temperature with an electron beam excitation energy of 5 keV. An emission peak produced by the plurality of quantum wells  112  can occur around approximately 435 nanometers. This emission peak can correspond to approximately 14% Indium content in the quantum wells  112 . 
     The characteristics of the nitride-based LED devices  108  as illustrated in  FIGS. 4A through 4C  can confirm the ability to selectively grow InGaN-based LED devices  108  on a van der Waals surface with high quality using a growth substrate  102  including a sapphire wafer. 
       FIGS. 5A and 5B  are optical microscope images of example grown nitride-based LED devices  108 .  FIGS. 5A and 5B  illustrates a portion of the growth substrate  102  subdivided into four delimited areas  204  by the grid  202 . Within each delimited area  204 , a nitride-based LED device  108  can be grown. Each nitride-based LED device  108  can have an area of approximately one millimeter squared. The nitride-based LED devices  108  illustrated in  FIGS. 5A and 5B  have different designs, indicating the variability in design of grown nitride-based LED devices  108 . 
       FIG. 6  is a graphical representation of current and voltage of the nitride-based LED device  108 . The current and voltage measurements of the nitride-based LED device  108  indicate the nitride-based LED device  108  can emit blue light emission. 
       FIGS. 7A through 7C  illustrate the release of an individually selected nitride-based LED device  108  from the growth substrate  102  after the nitride-based LED devices  108  are grown. Because the grid  202  physically insulates each nitride-based LED device  108  from each other, each nitride-based LED device  108  can be released and transferred to a receiving substrate  802  without the need for a dicing step.  FIG. 7A  illustrates this pick-and-place capability, as two of the four nitride-based LED devices  108  have been released and transferred, while two of the four nitride-based LED devices  108  remain on the growth substrate  102 . 
     During the transfer process, the selected nitride-based LED devices  108  can remain completely intact and free from cracks, metallic contact damage, or other forms of delamination. This delamination-free transfer can be achieved primarily through optimized vertical liftoff of the LED devices  108 , using a set-up as illustrated in  FIGS. 7B and 7C . The set-up can include a mechanically driven release device  702  that enables linear movement with respect to a vertical axis. By removing the selected nitride-based LED device  108  from the growth substrate  102  using only vertical movement, the nitride-based LED device  108  can avoid being peeled off, resulting in the potential for strains leading to cracks on the surface of the LED devices  108  to be minimized. 
     The release device  702  can include a support  704 . A liquid dissolvable tape  706  can be affixed to the support  704 . In some embodiments, the liquid dissolvable tape  706  can be water dissolvable. The support  704  with the liquid soluble tape  706  can be lowered such that the tape  706  can contact the nitride-based LED device  108 , as illustrated in  FIG. 7B . Upon contact, the liquid dissolvable tape  706  and the nitride-based LED device  108  can be flush with each other, such that the LED device  108  can be vertically released from the growth substrate  102  without peeling. As illustrated in  FIG. 7C , once the liquid dissolvable tape  706  and the nitride-based LED device  108  are securely affixed to each other, the support  704  can be vertically lifted. As the support  704  is vertically lifted, the nitride-based LED device  108  can be released from the growth substrate  102 . In some embodiments, a hard carrier, resist, or polydimethylsiloxane (“PDMS”) can be substituted for the liquid soluble tape  706 , and can be used to release the nitride-based LED device  108  from the growth substrate  102 . 
       FIGS. 8A and 8B  are microscope images of the selected nitride-based LED device  108  being transferred to a receiving substrate  802  after release from the growth substrate  102 .  FIG. 8A  is a microscope image of a back-side of the nitride-based LED device  108  on the liquid dissolvable tape  706  after release from the growth substrate  102 .  FIG. 8B  is a microscope image of the nitride-based LED device  108  transferred to a receiving substrate  802  without any damage, cracks, fractures or other forms of spontaneous delamination. In some embodiments, the receiving substrate  802  can be a flexible metallic tape, including flexible aluminum tape and flexible copper tape. In some embodiments, the nitride-based LED device  108  can be transferred to the receiving substrate  802  such that the p-layer  118  is facing upwards. Alternatively, in some embodiments, the nitride-based LED device  108  can be placed up-side down in contact with an IC driver. In this configuration, an additional transfer step after the LED device  108  is released can be implemented. Once the nitride-based LED device  108  has been successfully transferred to the receiving substrate  802 , the liquid dissolvable tape  706  can be dissolved. In some embodiments, the liquid dissolvable tape  706  can be removed by dissolving in water for approximately one minute.  FIG. 8C  illustrates the nitride-based LED device  108  can be further transferred to an integrated circuit  804 . After all the nitride-based LED devices  108  grown on the growth substrate  102  have been individually selected, released, and transferred to the receiving substrate  802 , the growth substrate  102  can be used again for subsequent growth of additional sets of nitride-based LED devices  108 . 
       FIG. 9  is a graphical representation of current and voltage of an example nitride-based LED device  108  before and after transfer to the receiving substrate  802 . As illustrated in  FIG. 9 , the nitride-based LED device  108  can have substantially similar current and voltage characteristics before transfer  902  and after transfer  904 , indicating that during the release and transfer, the LED device  108  does not experience spontaneous delamination. The current and voltage characteristics can also indicate that the transferred example nitride-based LED device  108  can emit blue light emission. Although  FIG. 9  depicts an example nitride-based LED device  108  that can emit blue light emission, it is contemplated that any nitride-based LED device  108  can be grown on the growth substrate  102  and transferred to the receiving substrate  802 , such that the nitride-based LED device  108  can emit any form of visible light and/or ultraviolet light. 
       FIG. 10  is a flow diagram outlining the steps of a method  1000  of growing nitride-based LED devices  108  on a growth substrate  102  and transferring individually selected nitride-based LED devices  108  to a receiving substrate  802 . The method  1000  can include providing  1005  a growth substrate  102 . 
     The method  1000  can include subdividing  1010  the growth substrate  102  into a plurality of delimited areas  204 . 
     The method  1000  can include growing  1015  a mechanical release layer  104  on the growth substrate  102 . 
     The method  1000  can include growing  1020  a set of nitride-based LED devices  108  on the mechanical release layer  104 . 
     The method  1000  can include individually selecting  1025  a nitride-based LED device  108  from the set of nitride-based LED devices  108 . 
     The method  1000  can include releasing  1030  the selected nitride-based LED device  108  from the growth substrate  102 . 
     The method  1000  can include transferring  1035  the selected nitride-based LED device  108  to a receiving substrate  802 . 
     The ability to individually select a nitride-based LED device  108  from the set of grown nitride-based LED devices  108  grown on the patterned growth substrate  102 , release the selected nitride-based LED device  108 , and successfully transfer the selected nitride-based LED device  108  without spontaneous delamination of the device  108  using the method described herein can allow industrial level heterogenous integration. The grid  202  used to subdivide the growth substrate  102  into delimited areas  204  can allow high-quality nitride-based LED devices  108  to be grown solely within an individual delimited area  204  and be physically insulated from each other. This configuration can allow a large-scale patterned growth substrate  102  to be used. Once grown, the physically insulated nitride-based LED devices  108  can be easily released and transferred from the growth substrate  102  to the receiving substrate  802  using the pick-and-place technique. Accordingly, the method disclosed herein can provide viable routes for the development of advanced nitride-based LED devices at an industrial scale. 
     Although, the methods described herein is directed toward nitride-based LED devices, persons of ordinary skill in the art would appreciate that the methods can be applicable with many optoelectronic or electronic device based on gallium nitride materials, including, but not limited to, transistors, detectors, solar cells, and the like. 
     It is to be understood that the embodiments and claims disclosed herein are not limited in their application to the details of construction and arrangement of the components set forth in the description and illustrated in the drawings. Rather, the description and the drawings provide examples of the embodiments envisioned. The embodiments and claims disclosed herein are further capable of other embodiments and of being practiced and carried out in various ways. Also, it is to be understood that the phraseology and terminology employed herein are for the purposes of description and should not be regarded as limiting the claims. 
     Accordingly, those skilled in the art will appreciate that the conception upon which the application and claims are based may be readily utilized as a basis for the design of other structures, methods, and systems for carrying out the several purposes of the embodiments and claims presented in this application. It is important, therefore, that the claims be regarded as including such equivalent constructions. 
     Furthermore, the purpose of the foregoing Abstract is to enable the United States Patent and Trademark Office and the public generally, and especially including the practitioners in the art who are not familiar with patent and legal terms or phraseology, to determine quickly from a cursory inspection the nature and essence of the technical disclosure of the application. The Abstract is neither intended to define the claims of the application, nor is it intended to be limiting to the scope of the claims in any way. Instead, it is intended that the invention is defined by the claims appended hereto.