Electron Paramagnetic Resonance and Photoluminescence Studies of Impurities in CdTe

Abstract

CdTe single crystals from different sources have been examined to detect the presence of impurities which may be detrimental to applications in the fabrication of infrared detectors. Distinctive EPR signals from various donor impurities, including substitutional paramagnetic Fe, were found in several samples. A photoluminescence transition at 1.1 eV was also seen in these crystals and the amplitudes of the photoluminescence signals and the Fe EPR signals are strongly correlated. Elemental analysis of the samples indicates that EPR and PL are able to detect Fe concentrations of less than 0.1 ppm. Keywords: Electron paramagnetic resonance, Impurities in compound semiconductors, Defects in compound semiconductors, Iron, Cadmium tellurides.

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Document Details

Document Type
Technical Report
Publication Date
Oct 31, 1988
Accession Number
ADA202841

Entities

People

  • D. E. Cooper
  • R. C.. Bowman Jr.

Organizations

  • The Aerospace Corporation

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Amplitude
  • Chemistry
  • Classification
  • Compound Semiconductors
  • Crystals
  • Detectors
  • Electron Paramagnetic Resonance
  • Electrons
  • Impurities
  • Infrared Detectors
  • Intensity
  • Measurement
  • Paramagnetic Resonance
  • Resonance
  • Semiconductors
  • Spectra
  • Transitions

Fields of Study

  • Materials science

Readers

  • Radar Systems Engineering.
  • Semiconductor Device Technology
  • Superconducting Magnet Technology

Technology Areas

  • Microelectronics