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Class Information
Number: 257/441
Name: Active solid-state devices (e.g., transistors, solid-state diodes) > Responsive to non-electrical signal (e.g., chemical, stress, light, or magnetic field sensors) > Electromagnetic or particle radiation > Light > Narrow band gap semiconductor (
Description: Subject matter wherein the device contains a semiconductor material which has a gap between its conduction and valence bands which is less than one electron volt.

Sub-classes under this class:

Class Number Class Name Patents
257/442 Ii-vi compound semiconductor (e.g., hgcdte) 221

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8710603 Engineered magnetic layer with improved perpendicular anisotropy using glassing agents for spintronic applications Apr. 29, 2014
8680553 Light-emitting device, light-receiving device and method of manufacturing the same Mar. 25, 2014
8530818 Apparatus, method and system for providing reflection of an optical signal Sep. 10, 2013
8492865 Image sensor with contact dummy pixels Jul. 23, 2013
8450138 Three-dimensional bicontinuous heterostructures, method of making, and their application in quantum dot-polymer nanocomposite photodetectors and photovoltaics May. 28, 2013
8299497 Near-infrared photodetector with reduced dark current Oct. 30, 2012
8134179 Photodiode with a reduced dark current and method for the production thereof Mar. 13, 2012
8043942 Method for producing core-shell nanowires, nanowires produced by the method and nanowire device comprising the nanowires Oct. 25, 2011
8034651 Light receiving device and method of manufacturing light receiving device Oct. 11, 2011
8003434 Reduced dark current photodetector Aug. 23, 2011
7795639 Avalanche photodiode Sep. 14, 2010
7777287 System and apparatus providing analytical device based on solid state image sensor Aug. 17, 2010
7768089 Semiconductor device Aug. 3, 2010
7768048 Infrared sensor IC, and infrared sensor and manufacturing method thereof Aug. 3, 2010
7750425 Intermediate-band photosensitive device with quantum dots embedded in energy fence barrier Jul. 6, 2010
7741594 Electromagnetic wave detector with an optical coupling surface comprising lamellar patterns Jun. 22, 2010
7692272 Electrically rewritable non-volatile memory element and method of manufacturing the same Apr. 6, 2010
7687871 Reduced dark current photodetector Mar. 30, 2010
7687874 Surface illuminated photodiode and optical receiver module Mar. 30, 2010
7679662 Solid-state imaging element and solid-state imaging device Mar. 16, 2010
7592632 Light emitting device and display device using the same Sep. 22, 2009
7304368 Chalcogenide-based electrokinetic memory element and method of forming the same Dec. 4, 2007
7190048 Resistance variable memory device and method of fabrication Mar. 13, 2007
7122844 Susceptor for MOCVD reactor Oct. 17, 2006
7087832 Nanostructure and nanocomposite based compositions and photovoltaic devices Aug. 8, 2006
7087833 Nanostructure and nanocomposite based compositions and photovoltaic devices Aug. 8, 2006
7056815 Narrow energy band gap gallium arsenide nitride semi-conductors and an ion-cut-synthesis method for producing the same Jun. 6, 2006
6878871 Nanostructure and nanocomposite based compositions and photovoltaic devices Apr. 12, 2005
6870239 Avalanche photodiode having an extrinsic absorption region Mar. 22, 2005
6750486 Semiconductor and fabrication method thereof Jun. 15, 2004
6750075 Multi color detector Jun. 15, 2004
6646318 Bandgap tuned vertical color imager cell Nov. 11, 2003
6521883 Photovoltaic device Feb. 18, 2003
6509203 Semiconductor imaging device and method for producing same Jan. 21, 2003
6504219 Indium field implant for punchthrough protection in semiconductor devices Jan. 7, 2003
6452242 Multi color detector Sep. 17, 2002
6452220 Current isolating epitaxial buffer layers for high voltage photodiode array Sep. 17, 2002
6410941 Reconfigurable systems using hybrid integrated circuits with optical ports Jun. 25, 2002
6255708 Semiconductor P-I-N detector Jul. 3, 2001
6180967 Bicolor infrared detector with spatial/temporal coherence Jan. 30, 2001
6172379 Method for optimizing QWIP grating depth Jan. 9, 2001
6130466 Semiconductor heterostructure radiation detector having two spectral sensitivity ranges Oct. 10, 2000
6114738 Intrinsic p-type HgCdTe using CdTe capping layer Sep. 5, 2000
6037614 Methods for manufacturing group IV element alloy semiconductor materials and devices that include such materials Mar. 14, 2000
5991473 Waveguide type semiconductor photodetector Nov. 23, 1999
5981868 Thin-film solar cell comprising thin-film light absorbing layer of chalcopyrite multi-element compound semiconductor Nov. 9, 1999
5969375 Infrared detector with non-cooled quantum well structure Oct. 19, 1999
5769964 Bulk single crystal ternary substrates for a thermophotovoltaic energy conversion system Jun. 23, 1998
5751049 Two-color infrared detector May. 12, 1998

1 2 3

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