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Class Information
Number: 257/E31.043
Name: Active solid-state devices (e.g., transistors, solid-state diodes) > Semiconductor devices responsive or sensitive to electromagnetic radiation (e.g., infrared radiation, adapted for conversion of radiation into electrical energy or for control of electrical energy by such radiation processes, or apparatus peculiar to manufacture or treatment of such devices, or of parts thereof) (epo) > Characterized by semiconductor body (epo) > Characterized by semiconductor body crystalline structure or plane (epo) > Including polycrystalline semiconductor (epo)
Description: This subclass is indented under subclass E31.04. This subclass is substantially the same in scope as ECLA classification H01L31/0368.

Sub-classes under this class:

Class Number Class Name Patents
257/E31.044 Including only group iv element (epo) 71

Patents under this class:
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Patent Number Title Of Patent Date Issued
8704326 Thin-film photoelectric conversion device and method for production thereof Apr. 22, 2014
8691613 Method for manufacturing photoelectric conversion device Apr. 8, 2014
8530267 Silicon-based thin film solar cell and method for manufacturing same Sep. 10, 2013
8508009 Microlens and an image sensor including a microlens Aug. 13, 2013
8440906 Nanocrystal solar cells processed from solution May. 14, 2013
8389388 Photonic device and method of making the same Mar. 5, 2013
8357940 Thin film transistor and manufacturing method thereof Jan. 22, 2013
8187905 Method of forming a microlens and a method for manufacturing an image sensor May. 29, 2012
8178778 Photovoltaic conversion element and manufacturing method therefor, and photovoltaic conversion module using same May. 15, 2012
8119904 Silicon wafer based structure for heterostructure solar cells Feb. 21, 2012
8101958 Semiconductor light-emitting device Jan. 24, 2012
8093590 Photoelectric conversion device Jan. 10, 2012
8076175 Method for making solar cell having crystalline silicon P-N homojunction and amorphous silicon heterojunctions for surface passivation Dec. 13, 2011
7948010 Dual seed semiconductor photodetectors May. 24, 2011
7915611 Photoelectric conversion device Mar. 29, 2011
7897966 Method for manufacturing flat substrates Mar. 1, 2011
7888762 Infrared detector and fabricating method of infrared detector Feb. 15, 2011
7884370 Organic light emitting diode display and method for manufacturing the same Feb. 8, 2011
7786469 Thermal sensor with a silicon/germanium superlattice structure Aug. 31, 2010
7649206 Sequential lateral solidification mask Jan. 19, 2010
7642605 Semiconductor device Jan. 5, 2010
7557375 Method for fabricating crystalline silicon Jul. 7, 2009
7553687 Dual seed semiconductor photodetectors Jun. 30, 2009
7442599 Silicon/germanium superlattice thermal sensor Oct. 28, 2008
6559471 Quantum well infrared photodetector and method for fabricating same May. 6, 2003
6294414 Method of fabricating heterointerface devices having diffused junctions Sep. 25, 2001
6184456 Photovoltaic device Feb. 6, 2001
6057507 Coarse grain polycrystalline gallium antimonide thermophotovoltaic cell May. 2, 2000
5986285 Group III-V amorphous and microcrystalline optical semiconductor including hydrogen, and method of forming thereof Nov. 16, 1999
5913986 Photovoltaic element having a specific doped layer Jun. 22, 1999
5868869 Thin film photovoltaic device and process of manufacture Feb. 9, 1999
5674325 Thin film photovoltaic device and process of manufacture Oct. 7, 1997
5610094 Photoelectric conversion device Mar. 11, 1997
5045907 Graphotaxially formed photosensitive detector array Sep. 3, 1991
5006180 Pin heterojunction photovoltaic elements with polycrystal GaP (H,F) semiconductor film Apr. 9, 1991
4988641 Graphotaxially forming a photosensitive detector array Jan. 29, 1991
4891330 Method of fabricating n-type and p-type microcrystalline semiconductor alloy material including band gap widening elements Jan. 2, 1990
4775425 P and n-type microcrystalline semiconductor alloy material including band gap widening elements, devices utilizing same Oct. 4, 1988
4735909 Method for forming a polycrystalline monolayer Apr. 5, 1988
4626883 Textured crystal picosecond photoresponsive element Dec. 2, 1986
4366338 Compensating semiconductor materials Dec. 28, 1982
4321099 Method of fabricating Schottky barrier solar cell Mar. 23, 1982
4278830 Schottky barrier solar cell Jul. 14, 1981
4213801 Ohmic contact of N-GaAs to electrical conductive substrates by controlled growth of N-GaAs polycrystalline layers Jul. 22, 1980
4197141 Method for passivating imperfections in semiconductor materials Apr. 8, 1980
4155785 Process of making a radiation responsive device May. 22, 1979
4113531 Process for fabricating polycrystalline InP-CdS solar cells Sep. 12, 1978
4108684 Large grain thin film polycrystalline P-InP/n-Cds solar cell Aug. 22, 1978
4107724 Surface controlled field effect solid state device Aug. 15, 1978
4062038 Radiation responsive device Dec. 6, 1977

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