Effect of barrier width on the performance of quantum well infrared photodetector

Authors
Sim, SKH Liu, HC Shen, A Gao, M Lee, KF Buchanan, M Ohno, Y Ohno, H Li, EH
Citation
Skh. Sim et al., Effect of barrier width on the performance of quantum well infrared photodetector, INFR PHYS T, 42(3-5), 2001, pp. 115-121
Citations number
11
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Optics & Acoustics
Journal title
INFRARED PHYSICS & TECHNOLOGY
ISSN journal
13504495 → ACNP
Volume
42
Issue
3-5
Year of publication
2001
Pages
115 - 121
Database
ISI
SICI code
1350-4495(200106/10)42:3-5<115:EOBWOT>2.0.ZU;2-V
Abstract
We present a study on a set of AlGaAs/GaAs quantum well infrared photodetec tors with various barrier widths from about 100 to 500 Angstrom. At 77 K an d for a large field-of-view (FOV) 300-K background operation, measured resu lts on dark current, responsivity, and detectivity indicate that detectors with barrier widths larger than about 200 Angstrom have similar performance . For 60-70 K and F/2 FOV, barriers need to be larger than about 300 Angstr om to suppress inter-well tunneling. (C) 2001 Elsevier Science B.V. All rig hts reserved.