Effect of an Underlayer of Cadmium Telluride on the Reflection-Reducing Properties of Zinc Sulfide on Mercury Cadmium Telluride.

Abstract

For many years ZnS has been used as a passivating coating for HgCdTe photoconductive infrared reflectors. It has served the dual purpose of passivating the surface and acting as an antireflection coating. A recent suggestion in the research Division, NVEOL, was to use a layer of CdTe as the first layer on the HgCdTe surface. It was hoped that better passivation might result because of the properties of CdTe. A final layer ZnS would then be added to achieve further environmental protection and low reflectance. The purpose of this report is to investigate, by computational means, the effect of the underlying layer of CdTe on the reflectance-reducing properties of ZnS. This will be done with absorption coefficient of HgCdTe as a parameter to simulate the effect of cooling the detector to 77 K.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1984
Accession Number
ADA146195

Entities

People

  • J. T. Cox

Organizations

  • United States Army Communications-Electronics Command

Tags

Communities of Interest

  • Advanced Electronics
  • Electronic Warfare

DTIC Thesaurus Topics

  • Absorption Coefficients
  • Antireflection Coatings
  • Coatings
  • Compound Semiconductors
  • Computations
  • Detectors
  • Electronics
  • Environmental Protection
  • Low Temperature
  • Micrometers
  • New York
  • Optical Properties
  • Optics
  • Reflectance
  • Reflection
  • Refractive Index
  • Tellurides

Fields of Study

  • Materials science

Readers

  • Semiconductor Device Technology
  • Surface Coatings Technology.