Type-II Superlattice for High Performance LWIR Detectors

Abstract

We have studied and reported on the temperature dependant photoluminescence of Type-II InAs/GaSb 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.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
May 15, 2008
Accession Number
ADA495354

Entities

People

  • Binh-minh Nguyen
  • Darin Hoffman
  • E.d. Huang
  • Manijeh Razeghi
  • Pierre-yves Delaunay

Organizations

  • Northwestern University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Band Gaps
  • Band Structures
  • Conduction Bands
  • Crystal Lattices
  • Detection
  • Detectors
  • Electrons
  • Energy Bands
  • Energy Gaps
  • Energy Levels
  • Infrared Detectors
  • Quantum Wells
  • Semiconductors
  • Spectra
  • Subatomic Particles
  • Valence Bands

Fields of Study

  • Materials science

Readers

  • Computational Modeling and Simulation
  • Materials Science and Engineering.
  • Semiconductor Device Technology

Technology Areas

  • Microelectronics