摘要:
Alloys of hydrogenated amorphous silicon and germanium are disclosed that exhibit unexpectedly low saturated defect densities, particularly relative to the initial defect densities of the alloys, so as to render them substantially resistant to Staebler-Wronski degradation. The alloys are producible using conventional equipment, but glow-discharge methods are preferred. The preferred amount of germanium in the alloy is about 15 at. % to about 50 at. %. The alloys are particularly useful for making photovoltaic cells. The alloys can be used as intrinsic semiconductors and doped for use as "n" or "p" materials. Methods for making the alloys are also disclosed.
摘要:
Ionic conductivity in ternary chalcogenides of the form AB.sub.x C.sub.y, where A is a metallic atom with atomic number no greater than 55 which has a +1 oxidation state, B is a group III A metallic atom and C is a group VI A atom, has been observed. This ionic conductivity makes the compounds useful as components in electrochemical cells, e.g., electrolytes and electrodes.
摘要:
A process for polishing both the cadmium and sulfur face of CdS using buffered HCl solutions has been found to produce very smooth crystal surfaces. Use of HCl solutions buffered to a pH between 2.2 and 2.8 to polish the cadmium face is quite effective. An equally effective polishing agent for the sulfur face is a HCl solution buffered to a pH between 0.7 and 1.3.
摘要:
Solar cells showing improved efficiency, amounting to about 14 percent for overall solar power conversion, are obtained by annealing InP/CdS solar cells in a slightly reducing atmosphere for about 15 minutes in a temperature range preferably from about 550.degree. centrigrade to about 600.degree. centigrade. In an annealing temperature range from 400.degree. centigrade to 625.degree. centigrade, an inversely dependent adjustment of annealing time is found desirable. The atmosphere preferably comprises mainly a substantially inert component and typically comprises an H.sub.2 + N.sub.2 mixture, such as forming gas (15% H.sub.2 + 85% N.sub.2).
摘要:
A first product may be provided that comprises a substrate having a first surface, a first side, and a first edge where the first surface meets the first side; and a device disposed over the substrate, the device having a second side, where at least a first portion of the second side is disposed within 3 mm from the first edge of the substrate. The first product may further comprise a first barrier film that covers at least a portion of the first edge of the substrate, at least a portion of the first side of the substrate, and at least the first portion of the second side of the device.
摘要:
A device is provided. The device includes a substrate, an inorganic layer disposed over the substrate, and an organic layer disposed on the inorganic conductive or semiconductive layer, such that the organic layer is in direct physical contact with the inorganic conductive or semiconductive layer. The substrate is deformed such that there is a nominal radial or biaxial strain of at least 0.05% relative to a flat substrate at an interface between the inorganic layer and the organic layer. The nominal radial or biaxial strain may be higher, for example 1.5%. A method of making the device is also provided, such that the substrate is deformed after the inorganic layer and the organic layer are deposited onto the substrate.
摘要:
A p channel thin-film transistor (TFT) made of directly deposited microcrystalline silicon (uc-Si). The p TFT is integrated with its n channel counterpart on a single uc-Si film, to form a complementary metal-silicon oxide-silicon (CMOS) inverter of deposited uc-Si. The uc-Si channel material can be grown at lower temperatures by plasma-enhanced chemical vapor deposition in a process similar to the deposition. The p and n channels share the same uc-Si layer. The Figure shows the processing steps of manufacturing the TFT, where (12) represents the uc-Si layer of the device.
摘要翻译:由直接沉积的微晶硅(uc-Si)制成的p沟道薄膜晶体管(TFT)。 p TFT与其n沟道对应器集成在单个uc-Si膜上,以形成沉积的uc-Si的互补金属 - 氧化硅 - 硅(CMOS)反相器。 uc-Si通道材料可以在较低温度下通过等离子体增强化学气相沉积在与沉积相似的工艺中生长。 p和n通道共享相同的uc-Si层。 该图示出了制造TFT的处理步骤,其中(12)表示器件的uc-Si层。
摘要:
Solid state electrochromic devices are fabricated using, as the electrochromic material, ionic conductors such as heteropoly acids. The properties of the ionic conductors permit construction of a device having only two electrodes and the electrochromic material. In operation, low voltages impressed between the electrodes induce a color change. For example, when phosphotungstic acid is employed, the color change is from white to dark blue. Cycle times as low as 100 msec are achievable and the devices exhibit memory properties.
摘要:
Liquid-semiconductor photocells have received much attention recently as candidates for use in solar power conversion devices. A semiconductor liquid junction photovoltaic cell having a photoactive electrode made from CuInS.sub.2 and a liquid electrolyte containing a redox couple consisting of S.sub.2 .dbd./S.dbd. anions has been found to produce a stable photocurrent output.
摘要翻译:近来,液体半导体光电池作为用于太阳能转换装置的候选者已经受到很多关注。 已经发现具有由CuInS 2制成的光活性电极和含有由S2 = / S =阴离子组成的氧化还原电极的液体电解质的半导体液体结光伏电池产生稳定的光电流输出。
摘要:
A hydrogen transport process for cleaning the surface of an indium or gallium based semiconductor material and for depositing n-type cadmium sulfide on the cleaned semiconductor material is disclosed. The cleaning and deposition can be accomplished in sequence or simultaneously. The process entails adding hydrogen sulfide to a hydrogen gas flow in a chemical vapor deposition process. Single crystalline photovoltaic cells of p-InP/n-CdS with a 13.5% efficiency have been reproducibly fabricated. An efficiency of 4.6% has been obtained with a thin layer polycrystalline p-InP/n-CdS cell. Additionally, a p-GaAs/n-CdS heterodiode cell has been produced.