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Proceedings Paper

Characterization of photocurrent of mid-wavelength quantum-well infrared photodetector (MW-QWIP)
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Paper Abstract

We investigated the mechanism of the photocurrent transmission in mid-wavelength quantum-well infrared photodetectors that were made using InGaAs/AlGaAs quantum wells so that their peak absorption would be at a wavelength near 5 μm. Analyzing the bias-voltage dependence of the photocurrent for the samples with different well layer thicknesses, we found that the photocurrent transmission could be accounted for by taking into account the tunneling process via the triangular barrier, the effect of the intrinsic electric field due to the unintentional impurities, and the effect of the drift velocity.

Paper Details

Date Published: 30 August 2004
PDF: 7 pages
Proc. SPIE 5406, Infrared Technology and Applications XXX, (30 August 2004); doi: 10.1117/12.542964
Show Author Affiliations
Yasuhito Uchiyama, Fujitsu Labs. Ltd. (Japan)
Hironori Nishino, Fujitsu Labs. Ltd. (Japan)
Yusuke Matsukura, Fujitsu Labs. Ltd. (Japan)
Kazuo Ozaki, Fujitsu Labs. Ltd. (Japan)
Toshio Fujii, Fujitsu Labs. Ltd. (Japan)

Published in SPIE Proceedings Vol. 5406:
Infrared Technology and Applications XXX
Bjorn F. Andresen; Gabor F. Fulop, Editor(s)

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