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Class Information
Number: 257/E31.008
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 material (epo) > Inorganic materials (epo) > Selenium or tellurium (epo)
Description: This subclass is indented under subclass E31.004. This subclass is substantially the same in scope as ECLA classification H01L31/0272.

Sub-classes under this class:

Class Number Class Name Patents
257/E31.01 Characterized by doping material (epo) 9
257/E31.009 For device having potential or surface barrier (epo) 10

Patents under this class:

Patent Number Title Of Patent Date Issued
8709856 Enhancement of semiconducting photovoltaic absorbers by the addition of alkali salts through solution coating techniques Apr. 29, 2014
8673672 Method for making Cu2-xSe nanoparticles and method for making deposited Cu2-xSe thin film by electrophoresis Mar. 18, 2014
8574538 Solid material in the divided state, process for the production of such a material, and use of such a material in a photovoltaic cell Nov. 5, 2013
8564082 Radiation detector Oct. 22, 2013
8551802 Laser annealing for thin film solar cells Oct. 8, 2013
8519380 Low thermal conductivity material Aug. 27, 2013
8501519 Method of production of CIS-based thin film solar cell Aug. 6, 2013
8466534 Radiation detector, and a radiographic apparatus having the same Jun. 18, 2013
8445313 Method for forming a self-aligned bit line for PCRAM and self-aligned etch back process May. 21, 2013
8415662 Radiation detector having a plurality of amorphous selenium layers Apr. 9, 2013
8372684 Method and system for selenization in fabricating CIGS/CIS solar cells Feb. 12, 2013
8350289 Semiconductor device Jan. 8, 2013
8313976 Method and apparatus for controllable sodium delivery for thin film photovoltaic materials Nov. 20, 2012
8273598 Method for forming a self-aligned bit line for PCRAM and self-aligned etch back process Sep. 25, 2012
8258001 Method and apparatus for forming copper indium gallium chalcogenide layers Sep. 4, 2012
8258003 Manufacturing method of compound semiconductor solar cell Sep. 4, 2012
8252618 Methods of manufacturing cadmium telluride thin film photovoltaic devices Aug. 28, 2012
8207009 Methods of temporally varying the laser intensity during scribing a photovoltaic device Jun. 26, 2012
8188562 Multi-layer N-type stack for cadmium telluride based thin film photovoltaic devices and methods of making May. 29, 2012
8173459 Light emitting device having isolating insulative layer for isolating light emitting cells from each other and method of fabricating the same May. 8, 2012
8173482 Devices and methods of protecting a cadmium sulfide for further processing May. 8, 2012
8039290 Method of making photovoltaic cell Oct. 18, 2011
8030636 Enhanced memory density resistance variable memory cells, arrays, devices and systems including the same, and methods of fabrication Oct. 4, 2011
8021914 Manufacture of cadmium mercury telluride Sep. 20, 2011
7858980 Reduced active area in a phase change memory structure Dec. 28, 2010
7842534 Method for forming a compound semi-conductor thin-film Nov. 30, 2010
7795607 Current focusing memory architecture for use in electrical probe-based memory storage Sep. 14, 2010
7791058 Enhanced memory density resistance variable memory cells, arrays, devices and systems including the same, and methods of fabrication Sep. 7, 2010
7732888 Integrated circuit, method for manufacturing an integrated circuit, memory cell array, memory module, and device Jun. 8, 2010
7679158 Radiation image detector Mar. 16, 2010
7642549 Phase change memory cells delineated by regions of modified film resistivity Jan. 5, 2010
7560723 Enhanced memory density resistance variable memory cells, arrays, devices and systems including the same, and methods of fabrication Jul. 14, 2009
7510929 Method for making memory cell device Mar. 31, 2009
7511297 Phase change memory device and method of fabricating the same Mar. 31, 2009
6355873 Spherical shaped solar cell fabrication and panel assembly Mar. 12, 2002
6078007 Selenium photo generator cell with fluid top electrode Jun. 20, 2000
6018124 Selenium photo generator cell with fluid top electrode Jan. 25, 2000
5389812 Photodetector array having high pixel density Feb. 14, 1995
5328853 Method of making a photodetector array having high pixel density Jul. 12, 1994
5192634 A-selenium-tellurium photosensitive member and electrostatic information recording method Mar. 9, 1993
5101255 Amorphous photoelectric conversion device with avalanche Mar. 31, 1992
5070272 Photoconductive device and method of operating same Dec. 3, 1991
5047645 Thin film infrared laser detector and monitor Sep. 10, 1991
4937454 Radiation detector Jun. 26, 1990
4883562 Method of making a photosensor Nov. 28, 1989
4884011 Light-detecting device Nov. 28, 1989
4472492 Method for fabricating and annealing an electrophotographic image forming member Sep. 18, 1984
4298671 Tellurium layer allows vapor deposition of crystalline selenium thereon in making double layer electrophotographic record material Nov. 3, 1981

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