Photoconductivity of ZnO based granular structures

Armen R. Poghosyan; Natella R. Aghamalyan; Elbak Y. Elbakyan; Ruyan Guo; Ruben K. Hovsepyan; Silva I. Petrosyan

doi:10.1117/12.2062954

5 September 2014 Photoconductivity of ZnO based granular structures

Armen R. Poghosyan, Natella R. Aghamalyan, Elbak Y. Elbakyan, Ruyan Guo, Ruben K. Hovsepyan, Silva I. Petrosyan

Proceedings Volume 9200, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications VIII; 92001G (2014) https://doi.org/10.1117/12.2062954
Event: SPIE Optical Engineering + Applications, 2014, San Diego, California, United States

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.

Citation Download Citation

Armen R. Poghosyan, Natella R. Aghamalyan, Elbak Y. Elbakyan, Ruyan Guo, Ruben K. Hovsepyan, and 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

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