Absorption of Narrow Gap HgCdTe Near the Band Edge Including Nonparabolicity and the Urbach Tail (Preprint)

Abstract

An analytical model describing the absorption behavior of Hg1-xCdxTe is developed. It simultaneously considers the contributions from non-parabolic conduction/light hole bands and parabolic heavy hole bands obtained from 14-band k˙p electronic structure calculations as well as the Urbach tail. This model smoothly fits experimental absorption coefficients over energies ranging from the Urbach tail region to the intrinsic absorption region up to at least 300 me V above the band gap.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2007
Accession Number
ADA475048

Entities

People

  • Christoph H. Grein
  • M. E. Flatté
  • S. Sivananthan
  • S. Velicu
  • Shekhar Guha
  • V. Nathan
  • Yong Chang

Organizations

  • University of Illinois at Chicago

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorption
  • Absorption Coefficients
  • Air Force
  • Air Force Research Laboratories
  • Band Gaps
  • Band Structures
  • Coefficients
  • Conduction Bands
  • Detectors
  • Electrons
  • Energy Bands
  • Energy Gaps
  • Experimental Data
  • Governments
  • Materials
  • Military Research
  • United States

Fields of Study

  • Materials science

Readers

  • Computational Modeling and Simulation
  • Materials Science and Engineering.

Technology Areas

  • Microelectronics