Abstract:THE GROWTH AND DEVELOPMENT OF A (GAP)1-X(ZNS)X-BASED MATERIAL IS BEING ENGINEERED TO PREPARE AN UTEROPOLAR, DIRECT BANDGAP MATERIAL. THIS TYPE OF MATERIAL WITH BANDGAP IN EXCESS OF 2.6 EV CAN BE EMPLOYED IN BLUE LIGHT-EMITTING DIODES, AND IN UV DETECTORS CAPABLE OF SUPERIOR PERFORMANCE COMPARED TO… more
Abstract:ASTROPOWER IS DEVELOPING GALLIUM PHOSPHIDE ENERGY CONVERTERS OPTIMIZED FOR RADIO LUMINESCENT LIGHT-BASED POWER SUPPLIES. A "TWO-STEP" OR "INDIRECT" PROCESS IS USED WHERE A PHOSPHOR IS EXCITED BY RADIOACTIVE DECAY PRODUCTS TO PRODUCE LIGHT THAT IS THEN CONVERTED TO ELECTRICITY BY A GAP ENERGY… more
Abstract:The goal is to produce a sign language telephone providing visual communication to the hearing impaired. Currently their only access to telephone conversation is with typed messages using Telephone for the Deaf and Disable. Sign language is a more appropriate and effective communication medium than… more
Abstract:CERAMICS HAVE BEEN SHOWN TO BE VERY EFFECTIVE IN THE DEFEAT OF A WIDE RANGE OF KINETIC ENERGY (KE) THREATS. HOWEVER, THE USE OF CERAMICS IN ARMORED VEHICLES HAS BEEN LIMITED DUE IN MOST PART TO THEIR HIGH COST. CERAMIC PARTICULATE REINFORCED METAL MATRIX COMPOSITES (MMCS) PRODUCED BY PRESSURELESS… more
Abstract:SOLAR CELLS ARE BEING FABRICATED USING THIN FILMS OF SILICON ON INEXPENSIVE, FLEXIBLE CLOTH SUBSTRATES. PHOTOVOLTAIC DEVICES FABRICATED WITH THESE STRUCTURES CAN DEMONSTRATE THE HIGH PERFORMANCE OF CRYSTALLINE SILICON WITH THE LIGHT WEIGHT OF THIN FILM SOLAR CELLS. THE RESULT IS A SOLAR CELL THAT… more
Abstract:AstroPower is developing a highly sensitive UV detector based on epitaxial AlGaP/GaP heterostructures, a promising new material system for ultraviolet detectors. Detecting ultraviolet light is important to spectrophotometry, astronomy, high-energy physics, medicine, UV curing, photoresist exposure,… more
Abstract:AstroPower is developing a new process for the growth of large area, thin film 3C-SiC using a proprietary deposition technique followed by liquid phase epitaxy (LPE). Successful development of the growth process will provide high quality, thin film SiC in typical silicon wafer areas, allowing… more
Abstract:AstroPower will develop a two-junction monolithic tandem solar cell composed of (AlxGa1-x)0.51 In(0.49)P, which is lattice matched to GaAs, as the top cell in a three-junction, two-terminal tandem solar cell. This new tunable bandgap Al-Ga-In-P material is capable of current matching in a… more
Abstract:1 New concepts in optical computing and optical interconnects require hardware developments of generic, compact, multi-element LED source array. A two dementional array of individually-addressable Light-emitting Diode optical emitters will be developed. An innovative CVD/LPE heteropitaxy technique… more
Abstract:THE GOAL OF THIS PROJECT IS TO PRODUCE A SIGN-LANGUAGE TELEPHONE PROVIDING VISUAL COMMUNICATION TO THE HEARING IMPAIRED. CURRENTLY THEIR ONLY ACCESS TO TELEPHONE CONVERSATION IS WITH TYPED MESSAGES USING TELEPHONE FOR THE DEAF AND DISABLED. SIGN-LANGUAGE IS A MORE APPROPRIATE AND EFFECTIVE… more
Abstract:ASTROPOWER PROPOSES TO DEVELOP A LARGE-SCALE, HIGH-THROUGHPUT LIQUID PHASE EPITAXIAL (LPE) REACTOR FOR THEFABRICATION OF MULTI-LAYER III-V SEMICONDUCTOR DEVICES. A DESIGN GOAL OF 1000 CM(2) PER HOUR HAS BEEN ESTABLISHED WHILE MAINTAINING THE KEY FEATURES OF LPE: 1) HIGHEST MATERIAL QUALITY OF ALL… more
Abstract:CONFORMAL VAPOR PHASE EPITAXY (CVPE) IS A NEW TECHNIQUE FOR TWO-DIMENSIONAL CONSTRAINED GROWTH OF THIN SEMICONDUCTOR FILMS USING A HALIDE VAPOR TRANSPORT PROCESS. THIS TECHNIQUE WILL BE APPLIED TO THE GROWTH OF GAAS AND INP FILMS ON SILICON AND SAPPHIRE SUBSTRATES. EPITAXIAL-LATERALOVERGROWTH WITH… more
Abstract:WITH THE EMERGENCE OF THE COMPUTER AS A BASIC TOOL IN THE WORKPLACE, TYPING IS AN ESSENTIAL VOCATIONAL SKILL. PEOPLE WHO ARE UNABLE TO FULLY UTILIZE STANDARD KEYBOARDS HAVE SIGNIFICANLY LOWER TYPING RATES. ABBREVIATION EXPANSION IS A POWERFUL TECHNIQUE FOR SIGNIFICANTLY INCREASING THIS RATE. CURRENT… more
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