Radiation Effects of IR Detectors.

Abstract

The effects of surface potential and surface states on the properties of, and radiation sensitivity of trapping mode mercury cadmium telluride detectors with energy gaps of 0.3 eV and 0.1 eV were investigated. These studies were made with photo MIS structures. Low frequency C-V measurements were made and a program developed to extract the surface state density and surface potential from these data. The responsivity of these devices was dependent on surface potential. Gamma irradiation increased the number of surface states at the valence band edge but did not affect surface potential. The 0.3 eV detectors appeared to be more radiation sensitive than the 0.1 eV detectors. The results of this study are briefly discussed in light of current models for trapping behavior. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1978
Accession Number
ADA058698

Entities

People

  • Frank A. Junga
  • R. B. Emmons
  • W. W. Anderson

Organizations

  • Lockheed Martin Missiles and Space

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Band Gaps
  • Composite Materials
  • Detection
  • Detectors
  • Dielectrics
  • Electromagnetic Fields
  • Electronics
  • Energy Bands
  • Energy Gaps
  • Energy Levels
  • Fermi Levels
  • Infrared Detectors
  • Ionizing Radiation
  • Measurement
  • New York
  • Reliability
  • Semiconductors

Fields of Study

  • Physics

Readers

  • Molecular Photonics/Laser Physics
  • Nuclear and Radiation Engineering.
  • Semiconductor Device Technology