Matches 351 - 400 out of 418 < 1 2 3 4 5 6 7 8 9 >
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4292461 Amorphous-crystalline tandem solar cell  
A high efficiency tandem solar cell may be fabricated wherein a layer of transparent conducting material is placed over a crystalline substrate and under an amorphous region. Light incident on the...
4292092 Laser processing technique for fabricating series-connected and tandem junction series-connected solar cells into a solar battery  
A method of fabricating series-connected and tandem junction series-connected solar cells into a solar battery with laser scribing.
4289920 Multiple bandgap solar cell on transparent substrate  
The disclosure provides a highly efficient e.g., up to 40% efficiency, solar cell for solar energy concentrator use. Two solar cell layers comprised of different semiconductor materials are grown...
4281208 Photovoltaic device and method of manufacturing thereof  
A photovoltaic device comprises a light transmissive insulating substrate, on which a plurality of isolated transparent electrodes are formed. An amorphous silicon layer of a PIN structure, for...
4278474 Device for conversion of electromagnetic radiation into electrical current  
Electromagnetic energy may be converted directly into electrical energy by a device comprising a sandwich of at least two semiconductor portions, each portion having a p-n junction with a...
4278473 Monolithic series-connected solar cell  
A monolithic series-connected solar cell comprises a series of cells each having a mesa-like structure which is electrically interconnected from the top of each cell to a contact ledge formed in...
4272641 Tandem junction amorphous silicon solar cells  
An amorphous silicon solar cell has an active body with two or a series of layers of hydrogenated amorphous silicon arranged in a tandem stacked configuration with one optical path and electrically...
4255211 Multilayer photovoltaic solar cell with semiconductor layer at shorting junction interface  
A new high efficiency, multijunction photovoltaic solar cell for use with a concentration lens. This cell comprises an elemental single crystal substrate without an internal light sensitive...
4253882 Multiple gap photovoltaic device  
A multiple gap photovoltaic device having a transparent electrical contact adjacent a first cell which in turn is adjacent a second cell on an opaque electrical contact, includes utilizing an...
4246050 Lattice constant grading in the Al.sub.y Ca.sub.1-y As.sub.1-x Sb.sub.x alloy system  
Liquid phase epitaxy is employed to grow a lattice matched layer of GaAsSb on GaAs substrates through the compositional intermediary of the III-V alloy system AlGaAsSb which acts as a grading...
4244750 Photovoltaic generator  
A basic photovoltaic stack is constituted by a semiconducting layer interposed between a layer forming an ohmic contact and a layer forming a Schottky contact. A second photovoltaic stack having...
4243928 Voltage regulator for variant light intensity photovoltaic recharging of secondary batteries  
A simplified voltage regulator circuit permits varient light intensity photovoltaic recharging of secondary batteries. The regulator circuit electronically shunts serially connected regions of a...
RE30383 High-intensity, solid-state-solar cell device  
A semiconductor solar cell capable of converting incident radiation to electrical energy at high efficiency includes a plurality of series-connected unit solar cells formed on a common wafer of...
RE30384 Solar cell  
An improved solar cell designed for optimum efficiency is comprised of a plurality of series connected unit solar cells formed from a common substrate of semiconductor material. Each unit solar...
4219368 Semiconductor device having a number of series-arranged photosensitive cells  
A semiconductor device having a number of series-arranged photosensitive cells which are provided on a common substrate of a first conductivity type and which are separated by grooves extending...
4217633 Solar cell system having alternating current output  
A monolithie multijunction solar cell is modified by fabricating an integrated circuit inverter on the back of the cell to produce a device capable of generating an alternating current output. In...
4206002 Graded band gap multi-junction solar energy cell  
The specification discloses a solar cell having a graded band gap and a plurality of alternately active and inactive p-n junctions. The cell has a gradually changing monocrystalline structure of...
4200472 Solar power system and high efficiency photovoltaic cells used therein  
A solar power system including a movable platform for tracking the sun, a radiation concentrator, and a plurality of photovoltaic cell modules positioned on the platform for receiving concentrated...
4195305 Lattice constant grading in the Al.sub.y Ga.sub.1-y As.sub.1-x Sb.sub.x alloy system  
Liquid phase epitaxy is employed to grow a lattice matched layer of GaAsSb on GaAs substrates through the compositional intermediary of the III-V alloy system AlGaAsSb which acts as a grading...
4193081 Means for effecting cooling within elements for a solar cell array  
A solar cell array, comprised of a plurality of series-connected unit solar cells, formed from a common substrate, is cooled by providing cooling passages between adjacent sidewalls of adjoining...
4191593 Double heterojunction solar cells  
Photovoltaic cell comprising two heterojunctions between three component semiconductors Ga 1 -x AL x As with x varying from 0 to 0.9, GaAs, and Ge which have respective bandgaps of 0.66, 1.43 and...
4190950 Dye-sensitized solar cells  
A low-cost dye-sensitized Schottky barrier solar cell comprised of a substrate of semiconductor with an ohmic contact on one face, a sensitizing dye adsorbed onto the opposite face of the...
4191794 Integrated solar cell array  
An integrated array of solar cells, each cell having a positive and a negative electrode, is disclosed. A first grid comprising a plurality of non-intersecting electrically conductive members is...
4190852 Photovoltaic semiconductor device and method of making same  
A photovoltaic semiconductor device which is a horizontal multijunction series-array solar battery with a monocrystalline body and having elongate zones of aluminum doped silicon passed entirely...
4184894 Integrated photovoltaic generator  
Disclosed is an integrated photovoltaic generator containing a plurality of photovoltaic cells, the generator capable of producing a voltage greater than that generated by a single photovoltaic...
4179702 Cascade solar cells  
A monolithic cascade cell for converting incident radiation, particularly solar radiation, into electrical energy at a high efficiency with at least three layers of semi-conductive Group III-IV...
4179318 Method of making a solar-cell array  
The invention contemplates a method of making a solar-cell construction wherein plural spaced elongate unit cells of an array are formed from a parallel-grooved single wafer of substrate material...
4173496 Integrated solar cell array  
An integrated, monolithic array of solar cells wherein isolation between cells permits series interconnection of the cells to provide an output voltage for the array equal to the sum of the...
4158577 High output solar cells  
A high output solar cell comprises a three-layer semiconductor compound article, the layers being doped in pn 1 n 2 order in the direction of light travel, the pn 1 junction being a homojunction...
4156309 Method of construction of a multi-cell solar array  
The method of constructing a high voltage, low power, multi-cell solar array wherein a solar cell base region is formed in a substrate such as but not limited to that of silicon or on a substrate...
4144096 Solar battery and method of manufacture  
A monolithic solar battery including a plurality of P-N junction unit solar cells mounted on a substrate is provided. Each unit solar cell is isolated electrically from an adjacent cell by a buffer...
4133698 Tandem junction solar cell  
A solar cell having first and second closely spaced, parallel P-N junctions is fabricated, wherein the illuminated surface is totally free of metallization, i.e., the junction nearest the...
4131984 Method of making a high-intensity solid-state solar cell  
A semiconductor solar cell capable of converting incident radiation to electrical energy at high efficiency includes a plurality of series-connected unit solar cells formed on a common wafer of...
4128733 Multijunction gallium aluminum arsenide-gallium arsenide-germanium solar cell and process for fabricating same  
The specification describes a gallium aluminum arsenide-gallium arsenide-germanium solar cell and fabrication process therefor wherein the deposition of a layer of gallium aluminum arsenide...
4127862 Integrated optical detectors  
A plurality n of double heterostructure photodiodes are coupled together by (n-1) interleaved n + -p + tunnel junctions to form a multi-layered integrated structure which has an open circuit...
4105470 Dye-sensitized Schottky barrier solar cells  
A low-cost dye-sensitized Schottky barrier solar cell comprised of a substrate of semiconductor with an ohmic contact on one face, a sensitizing dye adsorbed onto the opposite face of the...
4094704 Dual electrically insulated solar cells  
Composite solar cells of improved efficiency comprise two cells of different characteristics arranged in optical series but electrically insulated from each other. Preferably, each cell is of...
4081820 Complementary photovoltaic cell  
This complementary photovoltaic cell has both an N+/P+ junction and a P+/N junction on the same epitaxial substrate, and so provides simultaneous photo-responsive outputs of both negative and...
4070206 Polycrystalline or amorphous semiconductor photovoltaic device having improved collection efficiency  
A body of semiconductor material having a first surface and a second surface spaced from the first surface includes a first layer along the first surface, a second layer along the second surface, a...
4042418 Photovoltaic device and method of making same  
An integrated array of solar cells is produced in continuous layers of photovoltaic junction forming semiconductor materials. Adjacent solar cells are sufficiently isolated by virtue of a...
4017332 Solar cells employing stacked opposite conductivity layers  
A cell for converting received light energy to electrical energy comprises, in the simplest embodiment, four layers of differing types of semiconductive material stacked so as to form three...
4015280 Multi-layer semiconductor photovoltaic device  
A semiconductor photovoltaic device is comprised of 2n layers of alternating p-type and n-type material having respective PN junctions between adjacent layers, wherein n is an integer greater than...
4005468 Semiconductor photoelectric device with plural tin oxide heterojunctions and common electrical connection  
A semiconductor photoelectric device of improved photoelectric and rectifying characteristics is provided by first forming a film of electrically insulating material such as silicon dioxide of a...
3994012 Photovoltaic semi-conductor devices  
Apparatus and method for constructing by means of standard high-yield microelectronic batch fabrication processes, reliable, monolithic high-voltage photovoltaic cells and highly efficient...
3990101 Solar cell device having two heterojunctions  
A body of semiconductor material of a solar cell device has a surface a portion of which is exposed to incident solar radiation, and a surface opposite the incident surface. At the incident surface...
3982315 Photoelectric device  
An n-type epitaxial layer is grown on a p-type silicon substrate. The epitaxial layer is photo-etched to provide a plurality of isolated regions of n-type conductivity. A silicon dioxide layer is...
3953876 Silicon solar cell array  
Silicon semiconductor device array, e.g. solar cell device or array of devices; formed from bulk silicon deposited in the form of columnar crystallites bounded by substantially vertical grain...
3760257 ELECTROMAGNETIC WAVE ENERGY CONVERTER  
Electromagnetic wave energy is converted into electric power with an array of mutually insulated electromagnetic wave absorber elements each responsive to an electric field component of the wave as...
3760240 LIGHT-SENSITIVE SEMICONDUCTOR DEVICE  
Light sensitive semiconductor device with several light sensitive elements, mutually separated from each other, arranged in the form of a matrix in rows and columns on a doped semiconductor...
3679949 SEMICONDUCTOR HAVING TIN OXIDE LAYER AND SUBSTRATE  
A semiconductor composite having a rectifying characteristic is provided by depositing a tin oxide film on a semiconductor substrate. In view of the fact that the tin oxide film has high...
Matches 351 - 400 out of 418 < 1 2 3 4 5 6 7 8 9 >