Abstract
Photoelectric properties of nanocrystalline indium oxide synthesized by the sol-gel method with nanocrystal sizes of 7–20 nm have been studied. An increase in the conductance by UV-light illumination of several orders of magnitude and the retention of this high-conducting state after the light is switched off is revealed. The kinetics of photoconductivity decay in air, vacuum, and argon at room temperature is studied; it is found that the photoconductivity decay is described by an expanded exponent. A conclusion about the determining role of oxygen molecules in the phenomenon of residual photoconductivity is made. A model is proposed which explains permanent photoconductivity decay in nanocrystalline indium oxide. A correlation between structural and photoelectric features in the object under study is found.
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Original Russian Text © E.A. Forsh, A.S. Ilyin, M.N. Martyshov, P.A. Forsh, P.K. Kashkarov, 2014, published in Rossiiskie Nanotekhnologii, 2014, Vol. 9, Nos. 11–12.
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Forsh, E.A., Ilyin, A.S., Martyshov, M.N. et al. Relaxation of photoconductivity in nanocrystalline indium oxide. Nanotechnol Russia 9, 618–622 (2014). https://doi.org/10.1134/S1995078014060093
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DOI: https://doi.org/10.1134/S1995078014060093