Abstract:
A method of fabricating a strained semiconductor-on-insulator (SSOI) substrate in which the strained semiconductor is a thin semiconductor layer having a thickness of less than 50 nm that is located directly atop an insulator layer of a preformed silicon-on-insulator substrate is provided. Wafer bonding is not employed in forming the SSOI substrate of the present invention.
Abstract:
A method of fabricating a strained semiconductor-on- insulator (SSOI) substrate is provided. The method includes first providing a structure that includes a substrate, a doped and relaxed semiconductor layer on the substrate, and a strained semiconductor layer on the doped and relaxed semiconductor layer. In the invention, the doped and relaxed semiconductor layer having a lower lattice parameter than the substrate. Next, at least the doped and relaxed semiconductor layer is converted into a buried porous layer and the structure including the buried porous layer is annealed to provide a strained semiconductor-on-insulator substrate. During the annealing, the buried porous layer is converted into a buried oxide layer.
Abstract:
Es werden wiederaufladbare Batterien mit einer hohen Kapazität (d.h. mit einer Kapazität von 50 mAh/gm oder einer höheren Kapazität) und einem hohen Leistungsvermögen bereitgestellt, die einen wiederaufladbaren Batteriestapel enthalten, der eine Struktur aus einem abgeblätterten Material aufweist, die eine Schicht aus einem Kathodenmaterial umfasst, die an einem Stressormaterial angebracht ist. Das Kathodenmaterial kann ein einkristallines Material aufweisen, das frei von polymeren Bindemitteln ist. Das Stressormaterial dient als ein Kathodenstromkollektor des wiederaufladbaren Batteriesta pels.
Abstract:
A method of forming an active matrix, light emitting diode (LED) array includes removing, from a base substrate, a layer of inorganic LED material originally grown thereupon; and bonding the removed layer of inorganic LED material to an active matrix, thin film transistor (TFT) backplane array.
Abstract:
A multi-junction III-V photovoltaic device is provided that includes at least one top cell comprised of at least one III-V compound semiconductor material; and a bottom cell in contact with a surface of the at least one top cell. The bottom cell includes a germanium-containing layer in contact with the at least one top cell, at least one intrinsic hydrogenated silicon-containing layer in contact with a surface of the germanium-containing layer, and at least one doped hydrogenated silicon-containing layer in contact with a surface of the at least one intrinsic hydrogenated silicon-containing layer. The intrinsic and doped silicon-containing layers can be amorphous, nano/micro-crystalline, poly-crystalline or single-crystalline.
Abstract:
A method of forming an active matrix, light emitting diode (LED) array includes removing, from a base substrate, a layer of inorganic LED material 804 originally grown thereupon; and bonding the removed layer of inorganic LED material 804 to an active matrix, thin film transistor (TFT) backplane array 802. Also disclosed is the active matrix light emitting diode array produced from said method. The inorganic LED material 804 may be removed from the base substrate by a method of spalling, wherein at least one or more stress layers are formed on the inorganic LED material layer, a flexible handle layer is formed on the one or more stress layers, and applying a force to the flexible handle layer so as to separate the stress layer and at least a portion of the inorganic LED material layer from the base substrate. The inorganic LED material layer 804 may be bonded to the active matrix TFT backplane array 802 by a process of cold welding. The inorganic LED material layer 804 may be patterned once bonded to the active matrix TFT backplane array 802, where a further inorganic LED material layer 804b can be bonded to the backplane array 802 to produce an array of LED elements 804a,804b, wherein the further inorganic LED material layer 804b is produced by the same method as the first inorganic LED material layer 804a.
Abstract:
A spall releasing plane 15 is formed in the middle of and embedded within a Group III nitride material layer 14. The spall releasing plane includes a material that has a different strain, a different structure and a different composition compared with the Group III nitride material portions and can be formed by adding impurities during the vapour deposition process. Device layer 16, stressor layer 22 and handle 24 are deposited onto the upper surface of the material layer. An edge exclusion layer 18 and adhesion layer 20 can be added above the device layer to aide in the spalling process. This method overcomes the issue of having a lattice mismatch when using Group III nitride materials, e.g. GaN, AlN, InGaN.
Abstract:
A method of controlled layer transfer is provided. The method includes providing a stressor layer 16 to a base substrate. The stressor layer has a stressor layer portion 16A located atop an upper surface (12, fig. 1) of the base substrate 10 and a self-pinning stressor layer portion 16B located adjacent each sidewall edge of the base substrate. A spalling inhibitor (20) is then applied atop the stressor layer portion of the base substrate, and thereafter the self-pinning stressor layer portion of the stressor layer is decoupled from the stressor layer portion by applying a laser or chemical etch to the self-pinning stressor layer portion. A portion of the base substrate that is located beneath the stressor layer portion is then spalled from the original base substrate. The spalling includes displacing the spalling inhibitor from atop the stressor layer portion to control the spalling.