ON THE ORIGIN OF THE ANOMALOUS PHOTOVOLTAIC EFFECT IN ZINC SULFIDE

Abstract

It was shown that earlier models failed to account for all the features of the APE. The only objection to Hutson's model was that it was incomplete. By extending Hutson's model and for mulating the problem in terms of independent photovoltage generators in each segment of the crystal, one can account for all the features of the spectral response of the APE. The expression derived for the dependence of the photovoltage on an external applied stress, together with the results of the stress experiments on mixed crystals, verifies the assumption of the origin of the photovoltage, viz., that the photovoltages arise from piezoelectric fields set up by permanent internal strains formed during the growth process. The experiment on single crystal hexagonal ZnS not only added strength to the proposed origin of the APE, but also successfully tied together the information on direction of crystal growth, pyroelectric effect, and the positive peak polarity. This experiment also verified the calculation of the photovoltage generated in a non-uniformly strained piezoelectric crystal.

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Document Details

Document Type
Technical Report
Publication Date
Mar 31, 1963
Accession Number
AD0405448

Entities

People

  • Frank A. Junga

Organizations

  • Lockheed Martin Missiles and Space

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Absorption Coefficients
  • Band Gaps
  • Compound Semiconductors
  • Crystal Growth
  • Crystal Structure
  • Crystals
  • Electromagnetic Fields
  • Electrometers
  • Energy Bands
  • Light Sources
  • Long Wavelengths
  • Measurement
  • Piezoelectric Crystals
  • Semiconductor Devices
  • Semiconductors
  • Surface Properties
  • Transition Temperature

Readers

  • Computational Modeling and Simulation
  • Materials Science and Engineering.
  • Semiconductor Device Technology