Accession Number:

ADA495354

Title:

Type-II Superlattice for High Performance LWIR Detectors

Descriptive Note:

Final technical rept. Sep 2003-Apr 2008

Corporate Author:

NORTHWESTERN UNIV EVANSTON IL CENTER FOR QUANTUM DEVICES

Report Date:

2008-05-15

Pagination or Media Count:

27.0

Abstract:

We have studied and reported on the temperature dependant photoluminescence of Type-II InAsGaSb superlattices. The PL spectrum gives precise information on the energy levels available to the electrons. The intensity of the PL signal depends on the rate of the radiative and non - radiative events that in turn depends on the density of the non radiative states. We look at the bangap dependence excitation intensity dependence of the Photoluminescence of a variety of Type-II superlattices. We then study the properties of MWIR Type-II superlattices in more detail, studying the temperature dependence extensively and develop models for the superlattice behavior.

Subject Categories:

  • Inorganic Chemistry
  • Optical Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE