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Proceedings Paper

Dynamical aspects of carrier transport in quantum well intersubband photodetectors
Author(s): Harald Schneider; Stefan Ehret; G. Bihlmann; Gerhard Boehm
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Paper Abstract

We report on the dynamics of the transport processes which determine the photoresponse of quantum well intersubband IR detectors. Immediately after intersubband excitation, coherent transport is important. This process can be identified via interference effects between photoexcited carriers. The carriers are re-captured subsequently within a few picoseconds. These fast transport processes give rise to space charges, which induce an additional, slow component of the photocurrent in the ns to microsecond(s) regime.

Paper Details

Date Published: 26 August 1997
PDF: 9 pages
Proc. SPIE 3182, Material Science and Material Properties for Infrared Optoelectronics, (26 August 1997); doi: 10.1117/12.280425
Show Author Affiliations
Harald Schneider, Fraunhofer-Institut fuer Angewandte Festkoerperphysik (Germany)
Stefan Ehret, Fraunhofer-Institut fuer Angewandte Festkoerperphysik (Germany)
G. Bihlmann, Fraunhofer-Institut fuer Angewandte Festkoerperphysik (Germany)
Gerhard Boehm, Technische Univ. Muenchen (Germany)


Published in SPIE Proceedings Vol. 3182:
Material Science and Material Properties for Infrared Optoelectronics

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