Armen R. Poghosyan,1 Natella R. Aghamalyan,1 Elbak Y. Elbakyan,1 Ruyan Guohttps://orcid.org/0000-0002-7661-6042,2 Ruben K. Hovsepyan,1 Silva I. Petrosyan1
1Institute for Physical Research (Armenia) 2The Univ. of Texas at San Antonio (United States)
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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.
Armen R. Poghosyan,Natella R. Aghamalyan,Elbak Y. Elbakyan,Ruyan Guo,Ruben K. Hovsepyan, andSilva I. Petrosyan
"Photoconductivity of ZnO based granular structures", Proc. SPIE 9200, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications VIII, 92001G (5 September 2014); https://doi.org/10.1117/12.2062954
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Armen R. Poghosyan, Natella R. Aghamalyan, Elbak Y. Elbakyan, Ruyan Guo, Ruben K. Hovsepyan, Silva I. Petrosyan, "Photoconductivity of ZnO based granular structures," Proc. SPIE 9200, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications VIII, 92001G (5 September 2014); https://doi.org/10.1117/12.2062954