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On Anomalously High Photosensitivity of CdS1 –xSex Granular Films

  • N. E. Nefedkin
  • E. S. AndrianovEmail author
  • A. A. Pukhov
  • A. P. Vinogradov
  • S. V. Gurov
  • I. A. Boginskaya
  • M. V. Sedova
  • I. V. Bykov
  • I. A. Ryzhikov
PHYSICAL PROCESSES IN ELECTRON DEVICES
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Abstract

An anomalously high photosensitivity of \({\text{Cd}}{{{\text{S}}}_{{{\text{1--}}x}}}{\text{S}}{{{\text{e}}}_{x}}\) granular films observed in the experiment is explained. It is assumed that the charge transfer mechanism based on surface states existing at the granule boundaries can be responsible for an anomalously high photocurrent-to-dark current ratio recently found in the study of the photoconductivity of \({\text{Cd}}{{{\text{S}}}_{{{\text{1--}}x}}}{\text{S}}{{{\text{e}}}_{x}}\) granular films. It has been shown that the current of charge carriers in surface states flowing through the gaps between the granules at a certain film topology can exceed by many orders of magnitude the current associated with tunneling of charge carriers between the granules.

Notes

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© Pleiades Publishing, Inc. 2018

Authors and Affiliations

  • N. E. Nefedkin
    • 1
    • 2
    • 3
  • E. S. Andrianov
    • 2
    • 3
    Email author
  • A. A. Pukhov
    • 1
    • 2
    • 3
  • A. P. Vinogradov
    • 1
    • 2
    • 3
  • S. V. Gurov
    • 1
    • 2
  • I. A. Boginskaya
    • 1
  • M. V. Sedova
    • 1
  • I. V. Bykov
    • 1
  • I. A. Ryzhikov
    • 1
  1. 1.Institute of Theoretical and Applied Electrodynamics, Russian Academy of SciencesMoscowRussia
  2. 2.Moscow Institute of Physics and Technology (State University)DolgoprudnyiRussia
  3. 3.Dukhov All-Russia Research Institute of AutomaticsMoscowRussia

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