Digitale Medien
[S.l.]
:
American Institute of Physics (AIP)
Journal of Applied Physics
91 (2002), S. 5887-5891
ISSN:
1089-7550
Quelle:
AIP Digital Archive
Thema:
Physik
Notizen:
We present a simple model for quantum well photodetectors for simultaneous middle infrared and near infrared or visible dual-band detection. We derive analytical formulas for the responsivity and detectivity as functions of the material and structural parameters. It is shown that the characteristics of near infrared and visible radiation detection can be sensitive to parameters of the hole transport, capture into quantum wells, and reflection from the electron emitting contact. We demonstrate that a properly designed photodetector can exhibit comparable performance for both middle infrared and near infrared (or visible) detection. The obtained results can be used to optimize the photodetector design and characteristics in both spectral ranges. © 2002 American Institute of Physics.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1063/1.1467604
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