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Effect of annealing temperatures on properties of sol‐gel grown ZnO‐ZrO 2 films
Author(s) -
Ivanova T.,
Harizanova A.,
Koutzarova T.,
Vertruyen B.
Publication year - 2010
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.201000427
Subject(s) - sol gel , materials science , crystallite , annealing (glass) , amorphous solid , spin coating , chemical engineering , transmittance , thin film , analytical chemistry (journal) , nanotechnology , crystallography , composite material , metallurgy , chemistry , optoelectronics , organic chemistry , engineering
Mixed ZnO‐ZrO 2 films have been obtained by sol‐gel technology. By using spin coating method, the films were deposited on Si and glass substrates. The influence of thermal annealings (the temperatures vary from 400 °C to 750 °C) on their structural properties has been studied. The structural behavior has been investigated by the means of XRD and FTIR techniques. The results revealed no presence of mixed oxide phases, the detected crystal phases were related to the hexagonal ZnO and to crystalline ZrO 2 . The sol‐gel ZnO‐ZrO 2 films showed polycrystalline structure with a certain degree of an amorphous fraction. The optical transmittance reached 91% and it diminished with increasing the annealing temperatures. The optical properties of the sol‐gel ZnO‐ZrO 2 films, deposited on glass substrates are excellent with high transparency and better then those of pure ZrO 2 films, obtained at similar technological conditions. (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)