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Class Information
Number: 257/185
Name: Active solid-state devices (e.g., transistors, solid-state diodes) > Heterojunction device > Light responsive structure > Staircase (including graded composition) device
Description: Subject matter wherein the active region contains a number of layers forming plural heterojunctions and the carrier (i.e., electron or hole) affinities of each layer incrementally increase or decrease progressively across the active region thickness, so that the energy level diagram of the active region, when under electrical bias, resembles a staircase.

Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8628989 Tri-gate field-effect transistors formed by aspect ration trapping Jan. 14, 2014
8525229 Semiconductor device Sep. 3, 2013
8507787 Solar cell having a discontinuously graded doping concentration Aug. 13, 2013
8399910 Sub-pixel NBN detector Mar. 19, 2013
8378384 Wafer and method for producing a wafer Feb. 19, 2013
8362520 Sub-pixel nBn detector Jan. 29, 2013
8354693 Solid state imaging device and method for fabricating the same Jan. 15, 2013
8344359 Transistor having thermo electron cooling Jan. 1, 2013
8330192 Method for modification of built in potential of diodes Dec. 11, 2012
8227291 Method of manufacturing stacked-layered thin film solar cell with a light-absorbing layer having band gradient Jul. 24, 2012
8212285 Radiation detector Jul. 3, 2012
8163651 Method of fabricating semiconductor substrate by use of heterogeneous substrate and recycling heterogeneous substrate during fabrication thereof Apr. 24, 2012
8110427 Stacked-layered thin film solar cell and manufacturing method thereof Feb. 7, 2012
8053815 Solid-state image pickup device, method of manufacturing solid-state image pickup device, and image pickup device Nov. 8, 2011
8044435 Sub-pixel nBn detector Oct. 25, 2011
8013381 Semiconductor device Sep. 6, 2011
7928473 Depletion-less photodiode with suppressed dark current and method for producing the same Apr. 19, 2011
7915640 Heterojunction semiconductor device and method of manufacturing Mar. 29, 2011
7875961 Semiconductor substrate of GaAs and semiconductor device Jan. 25, 2011
7851824 Light emitting device having a composition modulation layer of unequal amounts of at least two elements between an n-type contact layer and a transparent electrode Dec. 14, 2010
7834379 Avalanche photodiode with edge breakdown suppression Nov. 16, 2010
7808065 Semiconductor light receiving element Oct. 5, 2010
7799592 Tri-gate field-effect transistors formed by aspect ratio trapping Sep. 21, 2010
7795639 Avalanche photodiode Sep. 14, 2010
7795640 Depletion-less photodiode with suppressed dark current and method for producing the same Sep. 14, 2010
7759698 Photo-field effect transistor and integrated photodetector using the same Jul. 20, 2010
7741657 Inverted planar avalanche photodiode Jun. 22, 2010
7671395 Phase change memory cells having a cell diode and a bottom electrode self-aligned with each other Mar. 2, 2010
7629663 MSM type photodetection device with resonant cavity comprising a mirror with a network of metallic electrodes Dec. 8, 2009
7592654 Reduced crosstalk CMOS image sensors Sep. 22, 2009
7525131 Photoelectric surface and photodetector Apr. 28, 2009
7504672 Separate absorption and detection diode Mar. 17, 2009
7495264 Semiconductor device with high dielectric constant insulating film and manufacturing method for the same Feb. 24, 2009
7462892 Semiconductor device Dec. 9, 2008
7397066 Microelectronic imagers with curved image sensors and methods for manufacturing microelectronic imagers Jul. 8, 2008
7372068 QWIP with electron launcher for reducing dielectric relaxation effect in low background conditions May. 13, 2008
7365356 Photocathode Apr. 29, 2008
7348608 Planar avalanche photodiode Mar. 25, 2008
7348607 Planar avalanche photodiode Mar. 25, 2008
7238972 Photodetector Jul. 3, 2007
7214971 Semiconductor light-receiving device May. 8, 2007
7205563 QWIP with electron launcher for reducing dielectric relaxation effect in low background conditions Apr. 17, 2007
7202511 Near-infrared visible light photon counter Apr. 10, 2007
7170105 Type II interband heterostructure backward diodes Jan. 30, 2007
7115925 Image sensor and pixel having an optimized floating diffusion Oct. 3, 2006
7102185 Lightshield architecture for interline transfer image sensors Sep. 5, 2006
7078741 Enhanced photodetector Jul. 18, 2006
7064399 Advanced CMOS using super steep retrograde wells Jun. 20, 2006
7045833 Avalanche photodiodes with an impact-ionization-engineered multiplication region May. 16, 2006
6998635 Tuned bandwidth photocathode for transmission negative electron affinity devices Feb. 14, 2006

1 2 3 4

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