DocumentCode
2574552
Title
Investigation of the space charge effect in the quantum well infrared photodetector
Author
Kuan, C.H. ; Hsu, Y.F. ; Hsu, M.C.
Author_Institution
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
fYear
1998
fDate
6-9 Dec. 1998
Firstpage
673
Lastpage
676
Abstract
The I-V and noise in quantum well infrared photodetectors are investigated. It´s found two regimes are in sequence with V and V/sup 2/ dependence of the current. The noise power for the second regime shows I/sup 3/2/ dependence. Based on barrier space charge, the first regime is attributed to the transport of residual electrons in equilibrium. The second regime indicates that electron drift velocity and concentration are both proportional to applied biases. All the results is explained with partial potential drop on wells to increase the Fermi level.
Keywords
Fermi level; infrared detectors; photodetectors; quantum well devices; semiconductor device noise; space charge; Fermi level; I-V characteristics; electron concentration; electron drift velocity; noise power; quantum well infrared photodetector; space charge; Acoustical engineering; Dark current; Electron mobility; Gallium arsenide; Photodetectors; Space charge; Temperature; Thermionic emission; Tunneling; Voltage;
fLanguage
English
Publisher
ieee
Conference_Titel
Electron Devices Meeting, 1998. IEDM '98. Technical Digest., International
Conference_Location
San Francisco, CA, USA
ISSN
0163-1918
Print_ISBN
0-7803-4774-9
Type
conf
DOI
10.1109/IEDM.1998.746446
Filename
746446
Link To Document