ENERGY BAND MODEL FOR INFRARED STIMULATED EMISSION IN ZINC SULFIDE SINGLE CRYSTALS.

Abstract

Broad-band blue photoluminescence and phosphorescence of Group IA doped zinc sulfide bulk single crystals is examined at 77 degrees K. Photoconductivity and photovoltage effects are measured at 4.2 degrees K and thermoluminescence and thermally stimulated currents are measured from 4.2 degrees K to room temperature. The infrared stimulated visible emission from an excited crystal at 77 degrees K is measured as a function of ir wavelength between 1.8 and 2.6 microns. The observed absence of photoconductivity and thermally stimulated currents and the photoluminescence and ir and thermally stimulated emissions are explained by distant pair recombinations. An energy model based on this mechanism is presented. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1968
Accession Number
AD0835464

Entities

People

  • Robert S. Dickman

Organizations

  • Air Force Institute of Technology

Tags

DTIC Thesaurus Topics

  • Chemical Compounds
  • Compound Semiconductors
  • Crystals
  • Electronics
  • Emission
  • Energy Bands
  • Luminescence
  • Optical Phenomena
  • Phosphorescence
  • Photoconductivity
  • Photoluminescence
  • Semiconductors
  • Single Crystals
  • Solid State Electronics
  • Thermoluminescence

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.