Experimental and theoretical investigation of the off-band spectral response of quantum well infrared photodetectors

Judikaël Le Rouzo, Isabelle Ribet, Nicolas Guérineau, Riad Haidar, Michel Tauvy, Emmanuel Rosencher, Shun Lien Chuang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

High dynamics measurements of spectral response were carried out on quantum well infrared photodetectors (QWIP). This experiment revealed the presence of spectral structures which were never observed hitherto. Electric field assisted tunneling and, more surprisingly, Van Hove singularities at the miniband edges, have been observed in the low and high energy parts of the QWIP photocurrent spectra, respectively. These experimental features motivated us to initiate a theoretical study of the absorption in a multiquantum well structure.

Original languageEnglish
Title of host publicationPhysics of Semiconductors - 28th International Conference on the Physics of Semiconductors, ICPS 2006, Part A and B
Pages469-470
Number of pages2
DOIs
Publication statusPublished - 1 Dec 2007
Externally publishedYes
Event28th International Conference on the Physics of Semiconductors, ICPS 2006 - Vienna, Austria
Duration: 24 Jul 200628 Jul 2006

Publication series

NameAIP Conference Proceedings
Volume893
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference28th International Conference on the Physics of Semiconductors, ICPS 2006
Country/TerritoryAustria
CityVienna
Period24/07/0628/07/06

Keywords

  • Electric field assisted tunneling
  • Kronig-Penney model
  • Multiquantum well
  • Photocurrent spectra
  • Van Hove singularities

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