Effect of conduction band nonparabolicity on the dark current in a quantum well infrared detector

2007 ◽  
Vol 101 (4) ◽  
pp. 043705 ◽  
Author(s):  
Sudhira Panda ◽  
B. K. Panda ◽  
S. Fung
Keyword(s):  
Quantum Well ◽  
Conduction Band ◽  
Dark Current ◽  
Infrared Detector ◽  
Band Nonparabolicity

Differentially Strained P-Doped Quantum well Infrared Photodetector

1994 ◽  
Vol 299 ◽  
Author(s):  
R.T. Kuroda ◽  
E. Garmire
Keyword(s):  
Quantum Well ◽  
Dark Current ◽  
High Performance ◽  
Incident Light ◽  
Infrared Detector ◽  
Infrared Photodetectors ◽  
Infrared Photodetector ◽  
Quantum Well Infrared Photodetector ◽  
Quantum Well Infrared Photodetectors ◽  
Performance Specifications

AbstractIn this paper, we discuss a differentially strained p-doped quantum well infrared photodetector that achieves high performance specifications. We examine key device specifications for a 9 and 18 μm infrared detector. We calculate that through differential strain, these novel detectors have improved gain and substantially reduced dark current over previous quantum well infrared photodetectors, while being able to detect normal incident light.

BULK NONPARABOLIC EFFECTIVE MASS APPLIED TO CALCULATION OF LANDAU LEVEL ENERGY AND COMPARISON WITH CYCLOTRON RESONANCE IN InGaAs/InAlAs QUANTUM WELLS

2004 ◽  
Vol 18 (27n29) ◽  
pp. 3835-3838
Author(s):  
NOBUO KOTERA ◽  
KOICHI TANAKA ◽  
NOBORU MIURA
Keyword(s):  
Quantum Well ◽  
Quantum Wells ◽  
Effective Mass ◽  
Conduction Band ◽  
Electron Energy ◽  
Landau Level ◽  
Cyclotron Resonance ◽  
Energy Calculation ◽  
Level Energy ◽  
Band Nonparabolicity

Observation of band nonparabolicity is difficult because the electron energy in conduction band cannot be controlled widely. Using quantization energy in quantum well (QW) where the eigen energy is changed by QW thickness, nonparabolic effective mass inside a single QW of InGaAs was determined recently, up to 0.5 eV above bandedge. The dependence of effective mass on energy was analyzed and applied to calculate Landau level energy. Calculation fit well with cyclotron resonance experiments. Coupling between skew and normal cyclotron resonance was identified by this analysis.

GaAs/AlGaAs Multiquantum Well Infrared Detector Array with 6.0 μm Response Width

1994 ◽  
Vol 340 ◽  
Author(s):  
Jin-Min Li ◽  
Hai-Qun Zheng ◽  
Yi-Ping Zeng ◽  
Mei-Ying Kong
Keyword(s):  
Quantum Well ◽  
Dark Current ◽  
Infrared Detector ◽  
Detector Array ◽  
Quantum Well Structures ◽  
Detector Arrays ◽  
Periodic Grating ◽  
Current Densities ◽  
Infrared Detector Array ◽  
Doubly Periodic Grating

ABSTRACTlO×16 GaAs/AlGaAs quantum well infrared detector arrays with peak responsivity at 9.3μm have been achieved with front-side normal illumination based on a waveguide of doubly periodic grating coupler. The detector array with a wideband response from 4.2μm to 10.3μm is demonstrated by optimizing the quantum well structures and device processes. A peak detectivity D*λ =2.9×1010 cmHz1/2 /W and high a responsivity Rp=0.37A/W have been obtained at λp=9.3μm and T=77K. The dark current densities of the detectors in the array were smaller than 6.2×10−6 A/cm2 with the detectors biased (Vb=3.2V) for maximum detectivity.

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