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Proceedings Paper

Photoconductivity of ZnO based granular structures
Author(s): Armen R. Poghosyan; Natella R. Aghamalyan; Elbak Y. Elbakyan; Ruyan Guo; Ruben K. Hovsepyan; Silva I. Petrosyan
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Paper Abstract

We studied experimentally the granular structures prepared on the base of ZnO thin films. The influence of acceptor or donor complex, caused by oxygen vacancy and interstitial zinc atom, and impurities (Li or Ga) on the crystallite structure conductivity has been investigated. The effect of granule size and crystallite structure on conductivity and photoconductivity was studied. The new method for determination of electric current dependence on spatial coordinates in thin conducting film was developed, which allowed to diagnose a one-dimensional conductivity in ZnO:Ga films. The experimental results are interpreted on the basis of the scaling hypothesis and the percolation theory.

Paper Details

Date Published: 5 September 2014
PDF: 7 pages
Proc. SPIE 9200, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications VIII, 92001G (5 September 2014); doi: 10.1117/12.2062954
Show Author Affiliations
Armen R. Poghosyan, Institute for Physical Research (Armenia)
Natella R. Aghamalyan, Institute for Physical Research (Armenia)
Elbak Y. Elbakyan, Institute for Physical Research (Armenia)
Ruyan Guo, The Univ. of Texas at San Antonio (United States)
Ruben K. Hovsepyan, Institute for Physical Research (Armenia)
Silva I. Petrosyan, Institute for Physical Research (Armenia)


Published in SPIE Proceedings Vol. 9200:
Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications VIII
Shizhuo Yin; Ruyan Guo, Editor(s)

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