The Effects of Nonstoichiometry on Optical Properties of Oxide Nanopowders
M. Šćepanović a, M. Grujić-Brojčin a, Z. Dohčević-Mitrović a, K. Vojisavljević b, T. Srećković b and Z.V. Popović a
a Center for Solid State Physics and New Materials, Institute of Physics, Pregrevica 118, 11080 Belgrade, Serbia
b Institute of Multidisciplinary Research, Kneza Višeslava 1, Belgrade, Serbia
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Received: 3 09 2007;
In this paper we illustrate the change of optical properties of mechanically activated wurtzite ZnO powder and laser synthesized anatase TiO2 nanopowder due to the nonstoichiometry caused by mechanical activation and/or laser irradiation in vacuum. Both of the investigated materials are widely used in optoelectronics and the examination of their optical properties under different preparation and environmental conditions is of great practical interest.
DOI: 10.12693/APhysPolA.112.1013
PACS numbers: 77.84.Bw, 73.63.Bd, 78.67.-n, 78.55.-m, 78.30.-j