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  4. Space-charge effects in photovoltaic double barrier quantum well infrared detectors.
 
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1993
Journal Article
Title

Space-charge effects in photovoltaic double barrier quantum well infrared detectors.

Other Title
Raumladungseffekte in photovoltaischen Doppelbarrieren-Quantentopf Infrarot-Detektoren
Abstract
We show that the spatial distribution of the dopants strongly influences the transport asymmetry and the photovoltage observed in double barrier quantum well intersubband photodetectors. This influence can be quantitatively explained by the local space-charge fields arising from an asymmetry of the doping profile with respect to the well centers. The resulting transport model correctly predicts both the observed transport asymmetry of the photocurrent and the opposite asymmetry of the dark current.
Author(s)
Schneider, H.
Larkins, E.C.
Ralston, J.D.
Schwarz, Klaus  
Fraunhofer-Institut für Angewandte Festkörperphysik IAF  
Fuchs, F.
Fraunhofer-Institut für Angewandte Festkörperphysik IAF  
Koidl, P.
Fraunhofer-Institut für Angewandte Festkörperphysik IAF  
Journal
Applied Physics Letters  
DOI
10.1063/1.109906
Language
English
Fraunhofer-Institut für Angewandte Festkörperphysik IAF  
Keyword(s)
  • infrared detector

  • Infrarot-Detektor

  • intersubband transition

  • Intersubband-Übergang

  • photovoltaic

  • photovoltaisch

  • Quantentopf

  • quantum wells

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