Matches 301 - 350 out of 417 < 1 2 3 4 5 6 7 8 9 >
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4543441 Solar battery using amorphous silicon  
A solar battery has a pair of opposed light incident transparent electroconductive and back electrodes sandwiching amorphous silicon layers formed on a substrate with at least a major surface of...
4542255 Gridded thin film solar cell  
An improved transparent conductor structure for thin film solar cells comprising a plurality of metallic strip conductors deposited on a transparent conductor and aligned substantially with the...
4542256 Graded affinity photovoltaic cell  
An improved photovoltaic cell, and method for its manufacture, comprising front and back electrically conductive layers between which is sandwiched a primary light-absorbing layer of amorphous...
4539431 Pulse anneal method for solar cell  
A solar cell including a pulse annealed layer of crystalline, amorphous or polycrystalline semiconductor material of one conductivity type and either a layer of opposite conductivity type or a...
4536607 Photovoltaic tandem cell  
A photovoltaic tandem cell comprises an amorphous cell and a polycrystalline heterojunction cell. The cells are in optical series and separated by a transparent contact layer.
4533783 AC solar cell with alternately generated pn junctions  
A solar cell (2) is provided for generating alternating current to drive an external load (18) in response to light radiation. A central region (4) of given conductivity type is disposed between...
4532371 Series-connected photovoltaic array and method of making same  
A photovoltaic array comprises a continuous semiconductor body with a plurality of spaced apart first and second electrical contacts on respective opposed surfaces of the body, thereby forming a...
4532537 Photodetector with enhanced light absorption  
A photodetector including a light transmissive electrically conducting layer having a textured surface with a semiconductor body thereon. This layer traps incident light thereby enhancing the...
4528418 Photoresponsive semiconductor device having a double layer anti-reflective coating  
Disclosed is an improved dual layer anti-reflective coating for use in a photoresponsive semiconductor device, and a device incorporating the coating. The coating has a uniformly low parasitic...
4525731 Semiconductor conversion of optical-to-electrical energy  
Optical-to-electrical conversion is accomplished using an undoped region bounded by a tunneling junction of the order of the mean free path of an electron. A number of regions are assembled in...
4521447 Method and apparatus for making layered amorphous semiconductor alloys using microwave energy  
An apparatus and process utilizes microwave energy for depositing amorphous alloy materials in layered form onto a receiving surface. The process results in materials having unique properties...
4517403 Series connected solar cells and method of formation  
A photovoltaic device has a continuous thin film with a plurality of spaced photovoltaic regions thereon and front and back electrode portions substantially coextensive with each of the...
4514583 Substrate for photovoltaic devices  
A composite substrate for the fabrication of thin film electronic devices. The substrate is a multi-layer structure which includes (1) a support layer having sufficient rigidity to provide...
4514579 Large area photovoltaic cell and method for producing same  
A large area photovoltaic cell tolerant of puncture damage to small area segments thereof, and exhibiting only a proportional loss of electrical output from low resistance current paths formed...
4513168 Three-terminal solar cell circuit  
Photovoltaic solar cells have improved efficiency when constructed in monolithic form with two different band gap energy junctions. Solar light goes first through an upper layer containing a high...
4496788 Photovoltaic device  
A photovoltaic device comprising at least one crystalline and one amorphous semiconductor region with different photosensitivity is provided to absorb light in a wide range of wavelength, and...
4492181 Apparatus for continuously producing tandem amorphous photovoltaic cells  
A method and a multiple chamber apparatus for the continuous production of tandem, amorphous, photovoltaic solar cells on substrate material, whereby, at least six amorphous layers are continuously...
4485264 Isolation layer for photovoltaic device and method of producing same  
Large area photovoltaic devices are defined by applying a pattern of electrically-insulating material directly atop the exposed surface of the semiconductor material. Methods of producing these...
4485125 Method for continuously producing tandem amorphous photovoltaic cells  
A method and a multiple chamber apparatus for the continuous production of tandem, amorphous, photovoltaic cells on substrate material, whereby, at least six amorphous semiconductor layers are...
4476346 Photovoltaic device  
A PIN junction photovoltaic device using a P-type or N-type semiconductor having an optical band gap of not less than about 1.8 eV and a dark conductivity of not less than about 10 -8 (Ωcm) -1...
4471155 Narrow band gap photovoltaic devices with enhanced open circuit voltage  
The open circuit voltage and efficiency of photovoltaic devices formed from multiple regions of semiconductor alloys including at least one narrow band gap semiconductor alloy are enhanced. The...
4461922 Solar cell module  
Individual panels of solar cells are stacked one on top of the other and arranged so that incident light passes through each of the arrays of cells in each panel striking the one below it. The...
4451691 Three-terminal ternary III-V multicolor solar cells and process of fabrication  
Three-terminal ternary III-V two-color solar cells incorporating layers of GaAs 1 -x-y P x Sb y . The three-terminal structure enables the current to be withdrawn from both cells without the...
4451538 High hydrogen amorphous silicon  
Amorphous silicon having a high band gap is formed by glow discharge in an atmosphere containing H 2 and SiH 4 in a ratio of at least approximately 9 to 1. The partial pressure of H 2 and SiH 4 ...
4443651 Series connected solar cells on a single substrate  
Series connected amorphous silicon solar cells which are formed on a single substrate are described. Also described are methods of inexpensively forming such series connected amorphous silicon...
4442310 Photodetector having enhanced back reflection  
A photodetector having a light transmissive and electrical conducting spacer layer interposed between a semiconductor body having a semiconductor junction therein and a light reflective electrical...
4428110 Method of making an array of series connected solar cells on a single substrate  
A method of making a series connected array of amorphous silicon solar cells on a single substrate includes forming a plurality of spaced conductive lower electrodes on the substrate. Metal...
4419530 Solar cell and method for producing same  
A method of electrically isolating portions of a large surface area semiconductor body for various purposes such as the production of improved photovoltaic and semiconductor devices is disclosed...
4419533 Photovoltaic device having incident radiation directing means for total internal reflection  
There is disclosed new and improved photovoltaic devices which provide increased short circuit currents and efficiencies over that previously obtainable from prior devices. The disclosed devices...
4400868 Method of making a transparent and electrically conductive bond  
Solar cells with different bandgaps are stacked to form a multijunction photovoltaic converter with a high conversion efficiency. By stacking the cells mechanically rather than by growing them all...
4400221 Fabrication of gallium arsenide-germanium heteroface junction device  
Doping with one of the group Ia elements Li, Na or K near the heteroface junction produced P+ conductivity in the gallium arsenide and N+ conductivity in the germanium. The device can be used, for...
4400577 Thin solar cells  
Solar cells and arrays of solar cells are made as thin films on insulating substrates. In an exemplary embodiment, a thin conductive film is deposited on glass and a semi-conductor film is...
4396456 Method of peeling epilayers  
A method is disclosed for peeling thin epitaxially grown crystalline layers (epilayers) from the substrates on which they have been grown. A thin layer of single-crystal is epitaxially grown on a...
4387265 Tandem junction amorphous semiconductor photovoltaic cell  
A photovoltaic stack comprising at least two p + i n + cells in optical series, said cells separated by a transparent ohmic contact layer(s), provides a long optical path for the absorption of...
4385198 Gallium arsenide-germanium heteroface junction device  
Doping with one of the Group Ia elements Li, Na or K near the heteroface junction produces P+ conductivity in the gallium arsenide and N+ conductivity in the germanium. The device can be used, for...
4381233 Photoelectrolyzer  
There is presented a photoelectrolyzer comprising a number of minute solar cell elements suspended in an electrolyte. Each element is made of, for example, a first thin film of intrinsic amorphous...
4379943 Current enhanced photovoltaic device  
The disclosure is directed to photovoltaic devices having enhanced short circuit currents and efficiencies. The devices are made by depositing on a previously deposited doped amorphous...
4377723 High efficiency thin-film multiple-gap photovoltaic device  
A photovoltaic device includes at least two solar cells made from Group IV elements or their alloys in the amorphous state mounted on a substrate. The outermost or first cell has a larger bandgap...
4376872 High voltage V-groove solar cell  
A high voltage multijunction solar cell comprises a plurality of discrete voltage generating regions, or unit cells, which are formed in a single semiconductor wafer (10) and are connected together...
4356341 Cascade solar cell having conductive interconnects  
Direct ohmic contact between the cells in an epitaxially grown cascade solar cell is obtained by means of conductive interconnects formed through grooves etched intermittently in the upper cell....
4341918 High voltage planar multijunction solar cell  
A high voltage multijunction solar cell is provided wherein a plurality of discrete voltage generating regions or unit cells are formed in a single generally planar semiconductor body (12). The...
4338480 Stacked multijunction photovoltaic converters  
Solar cells with different bandgaps are stacked to form a multijunction photovoltaic converter with a high conversion efficiency. By stacking the cells mechanically rather than by growing them all...
4335503 Method of making a high voltage V-groove solar cell  
A method is provided for making a high voltage multijunction solar cell which comprises a plurality of discrete voltage generating regions, or unit cells, which are formed in a single semiconductor...
4332974 Multilayer photovoltaic cell  
A new high efficiency, multijunction photovoltaic solar cell for use with a concentrating lens. This cell comprises an elemental single crystal substrate without an internal light sensitive...
4330680 Integrated series-connected solar cell  
A row of strip-shaped semiconductor junctions is arranged on each of the two surfaces of a semiconductor substrate possessing a high ohmic resistance, these junctions having p + - and n + ...
4323719 Integrated solar cells and shunting diodes  
A method of connecting a shunting diode in parallel with a solar cell for the purpose of improving the tolerance of an array of solar cells to mismatch in cell output, whether caused by physical...
4316049 High voltage series connected tandem junction solar battery  
A high voltage series connected tandem junction solar battery which comprises a plurality of strips of tandem junction solar cells of hydrogenated amorphous silicon having one optical path and...
4315096 Integrated array of photovoltaic cells having minimized shorting losses  
There are disclosed an integrated array of photovoltaic cells each comprising, on a support, a first electrode segment, a semiconductor segment, and a second electrode segment; and a process for...
4297720 Multi-photodiodes  
The present invention provides monolithic-structure type photodiodes in which the first photodiode is sensitive to an optical signal having one wavelength and the second photodiode is sensitive to...
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...
Matches 301 - 350 out of 417 < 1 2 3 4 5 6 7 8 9 >