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Sensors 2013, 13(4), 5054-5098;

Progress in Infrared Photodetectors Since 2000

Renewable Energy and Applied Photonics Laboratories, Electrical and Computer Engineering Department, Tufts University, 161 College Ave., Medford, MA 02115, USA
Author to whom correspondence should be addressed.
Received: 23 January 2013 / Revised: 3 April 2013 / Accepted: 9 April 2013 / Published: 16 April 2013
(This article belongs to the Special Issue Photodetectors)
Full-Text   |   PDF [701 KB, uploaded 21 June 2014]


The first decade of the 21st-century has seen a rapid development in infrared photodetector technology. At the end of the last millennium there were two dominant IR systems, InSb- and HgCdTe-based detectors, which were well developed and available in commercial systems. While these two systems saw improvements over the last twelve years, their change has not nearly been as marked as that of the quantum-based detectors (i.e., QWIPs, QDIPs, DWELL-IPs, and SLS-based photodetectors). In this paper, we review the progress made in all of these systems over the last decade plus, compare the relative merits of the systems as they stand now, and discuss where some of the leading research groups in these fields are going to take these technologies in the years to come. View Full-Text
Keywords: infrared photodetectors; IRPDs; bulk detectors; QWIPs; QDIPs; DWELLs; superlattices infrared photodetectors; IRPDs; bulk detectors; QWIPs; QDIPs; DWELLs; superlattices
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Downs, C.; Vandervelde, T.E. Progress in Infrared Photodetectors Since 2000. Sensors 2013, 13, 5054-5098.

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