Responsivity of quantum well infrared photodetectors at terahertz detection wavelengths

M. A. Gadir, P. Harrison, R. A. Soref

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

A first-principles model of the photocurrent in quantum well infrared photodetectors (QWIPs) is derived. The model examines the responsivity, carrier capture probability and quantum efficiency. It is found that the QWIP sensitivity reaches a plateau below the 10 μm detection wavelength and remains nearly constant from 10 to 50 μm.

Original languageEnglish
Pages (from-to)5820-5825
Number of pages6
JournalJournal of Applied Physics
Volume91
Issue number9
Early online date17 Apr 2002
DOIs
Publication statusPublished - 1 May 2002
Externally publishedYes

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