Share Email Print

Proceedings Paper

Design issues relating to low-temperature dark current in quantum well infrared photodetectors
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

Quantum well infrared photodetectors (QWIPs) have emerged as a viable contender for many remote sensing applications, even in the space environment where low background fluxes are involved. There are, however, several issues that still need to be resolved in order to achieve optimum performance at low operating temperatures. One important issue is the dark current, which is dominated by Fowler-Nordheim and trap-assisted tunneling in this regime. In order to decrease the dark current of QWIPs at low temperatures, we are investigating these mechanisms to better understand them. Our preliminary investigations have uncovered another possible problem; offsets in the I-V characteristics which could impair the compatibility of a QWIP array with a readout circuit. In this paper we discuss these design issues.

Paper Details

Date Published: 15 April 1997
PDF: 9 pages
Proc. SPIE 2999, Photodetectors: Materials and Devices II, (15 April 1997); doi: 10.1117/12.271211
Show Author Affiliations
Anjali Singh, Air Force Phillips Lab. (United States)
David A. Cardimona, Air Force Phillips Lab. (United States)

Published in SPIE Proceedings Vol. 2999:
Photodetectors: Materials and Devices II
Gail J. Brown; Manijeh Razeghi, Editor(s)

© SPIE. Terms of Use
Back to Top
Sign in to read the full article
Create a free SPIE account to get access to
premium articles and original research
Forgot your username?