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Change in activation energy of surface conduction in polycrystalline zinc oxide upon irradiation by electrons

  • Physics of Semiconductors and Dielectrics
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Soviet Physics Journal Aims and scope

Abstract

The dependence of activation energy EA of surface conduction σs in polycrystalline ZnO upon dosage Φ of irradiation by electrons with energy of 30 keV is studied. It is found that the function σs = f(T) is composed of three segments with EA values in unirradiated ZnO approximately equal to 0.77, 0.12, and 0.048 eV, which are ascribed to a surface potential barrier ϕ between the powder crystallites and donor levels of interstitial Zn+ i and Zno i atoms, respectively. With increase in radiation dosage EA decreases on all segments, which is explainable by reduction in ϕ with increase in the concentrations of Zn+ i and Zno i due to radiation desorption and lattice radiolysis.

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Authors and Affiliations

  1. Nuclear Physics Scientific-Research Institute at S. M. Kirov Polytechnic Institute, Tomsk

    M. M. Mikhailov

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  1. M. M. Mikhailov
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 7, pp. 94–97, July, 1984.

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Mikhailov, M.M. Change in activation energy of surface conduction in polycrystalline zinc oxide upon irradiation by electrons. Soviet Physics Journal 27, 624–627 (1984). https://doi.org/10.1007/BF00897463

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  • DOI: https://doi.org/10.1007/BF00897463

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