Influence of quantum capture and tunneling mechanisms on the dark current of bound-to-continumm quantum-well infrared photodetectors

C. H. Chu, C. I. Hung, Y. H. Wang, M. P. Houng

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We present a theoretical model for the dark current of bound-to-continuum quantum-well infrared photodetectors (QWIP's) , by considering the field-induced mixing effect, tunneling rate and phonon scattering rate between bound and continuum states. Using this model, we can see clearly how these mechanisms significantly influence the Fermi levels of bound and continuum electrons, and thus, the dark current Nonlinear temperature dependence of the dark current at low temperature is predicted and discussed in detail. The simulated dark currents exhibit good agreement with the experimental results, without use of parameter fitting techniques.

Original languageEnglish
Pages (from-to)1262-1264
Number of pages3
JournalIEEE Photonics Technology Letters
Volume9
Issue number9
DOIs
Publication statusPublished - 1997 Sep 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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