Abstract:Aspen Systems proposes to design and synthesize transparent polymers with nonlinear, laser absorbing species and subanosecond response times. We will build polydiacetylens and multiphoton, laser-radiation-absorbing species directly into the polymer. Additional multi-photon absorbing chemical species… more
Abstract:Aspen Systems proposes an advanced onboard high purity hydrogen production subsystem for fuel cell vehicles. Ultrahigh purity hydrogen will be produced from liquid hydrocarbons utilizing a novel catalytic-membrane-based fuel reformer. The ultra-high purity hydrogen will be perfectly suitable for PEM… more
Abstract:WE PROPOSE TO APPLY A BIOTECHNOLOGY-BASED PROCESS TO MAKE NANOSTRUCTURES FOR OPTOELECTRONIC APPLICATIONS. THE RESULT WILL BE A UNIFORM ARRAY OF SILICON QUANTUM BOXES OF IDENTICAL DIMENSIONS IN A SILICON LAYER OF CONTROLLED THICKNESS. ALL THREE TECHNIQUES, CONTROLLED THICKNESS OF A CRYSTALLINE Si… more
Abstract:The proposed project will produce single-crystal boules of GaN that can be sliced and sold as high-quality substrates for the epitaxial growth of differently-doped GaN or of other lattice-matching crystals, or as wafers for use in optoelectronic and acoustooptic applications. The feasibility of GaN… more
Abstract:Astralux, Inc. will develolp a seminconductor sensor sensitive to bacuum ultraviolet photons. For this, we shall synthesize a wide bandgap semiconductor capable of forming a built-in electric field that will separate the photogenerated electron-hole pairs and produce a photovoltage in response to… more
Abstract:There is a market for a room temperature infrared detector as well as for a detection system which is radiation resistant and works at high temperatures and in reactive environments. Current infrared imaging technologies are too expensive and too bulky for these applications. We are proposing to… more
Abstract:The proposed research and development effort will explore the electroluminescene properties of rare earth elements in a III-V semiconductor. The technique of impact excitation, currently used in commercially available electroluminescent display devices, will be studied for exciting the rare earths.… more
Abstract:ASTROPOWER PROPOSES TO DEVELOP A LIGHTWEIGHT, HIGH EFFICIENCY, MONOLITHICALLY INTERCONNECTED THIN SILICON SOLAR CELL ARRAY. THE ARRAY INCORPORATES AN INNOVATIVE TECHNIQUE TO ACHIEVE ELECTRICAL ISOLATION AND INTERCONNECTION OF THE ARRAY ELEMENTS. A MONOLITHICALLY INTERCONNECTED ARRAY TECHNOLOGY… more
Abstract:ASTROPOWER PROPOSES TO DEVELOP A NEW FRONT-ILLUMINATED, ALUMINUM GALLIUM PHOSPHIDE (AlGaP) BASED, CHARGE-COUPLED DEVICE (CCD), ULTRAVIOLET (UV) IMAGING ARRAY. THIS NOVEL ARRAY TECHNOLOGY HAS NEVER BEEN SUCCESSFULLY DEVELOPED. THREE NEW INNOVATIONS WILL BE NECESSARY TO ACOMPLISH THE AlGaP CCD. THESE… more
Abstract:A NOVEL SILICON DEPOSITION PROCESS CAPABLE OF DEPOSITING HIGH QUALITY THIN-FILM SILICON LAYERS ON LOW COST SUPPORTING SUBSTRATES WILL BE INVESTIGATED IN PHASE I. THE SUBSTRATE WILL INCLUDE A REFLECTOR FOR LIGHT TRAPPING. THE PLANNED DEPOSITION PROCESS WILL ALLOW THE FORMATION OF SILICON LAYERS 20… more
Abstract:INVESTIGATORS ARE DEVELOPING MONOLITHICALLY INTEGRATED BICOLOR EDGE EMITTER-DETECTOR PAIRS FOR WAVELENGTH-DIVISION MULTIPLEXING IN FIBER OPTIC COMMUNICATIONS. THIS DEVICE UTILIZES LATERALLY GRADED A1XGA1-XAS LAYERS FORMED BY LIQUID PHASE EPITAXIAL DEPOSITION ONTO A CONTINUOUSLY MOVING SUBSTRATE. … more
Abstract:THE SOLAR CELL APPLICATION OF CRYSTALLINE SILICON THIN-FILM, PHOTOCOLTAIC (PV) TECHNOLOGIES IS CURRENTLY LIMITED BY THE HIGH COST OF THE SILICON RAW MATERIAL. THIS IS A RESULT OF THE CARBOTHERMAL REDUCTION METALLURGICAL PROCESS USED TO CREATE THE SEMICONDUCTOR-GRADE SILICON FROM SILICA. THERE IS A… more
Abstract:AstroPower proposes to develop intense, mass-producible, low-cost 4 to 5 micron light-emitting diodes (LED's) using liquid-phase heteroepitaxy of lattice-matched InAsSb on GaSb substrates. The brightest visible LEDs (Ultrabrights) currently available are being produced commercially by the liquid… more
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