ZnO films grown by successive chemical solution deposition |
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Authors: | AE Rakhshani A Bumajdad J Kokaj |
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Institution: | (1) Physics Department, Faculty of Science, Kuwait University, P.O. Box 5969, Safat, 13060, Kuwait;(2) Chemistry Department, Faculty of Science, Kuwait University, P.O. Box 5969, Safat, 13060, Kuwait |
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Abstract: | ZnO films were grown from 0.1-M zincate solutions on stainless-steel and aluminosilicate glass substrates by the successive
chemical solution deposition method. The structure, morphology, composition, and optical emission properties of the films
were studied by X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy, and photoluminescence techniques.
Results revealed that the as-grown film contains a substantial amount of amorphous zinc hydroxide (15–25%), at least on its
surface. This can be reduced to 7% by annealing the film in argon (350 °C, 1 h). Despite the presence of the hydroxide phase,
the films hexagonal lattice constants match the standard values. The films surface texture and the grains shape and preferential
orientation depend on the type of the substrate and its surface conditioning. The UV photoluminescence emission from as-grown
films at 3.22±0.04 eV (380–390 nm) and its suppression due to the effect of chlorine are addressed.
PACS 81.16.Be; 81.05.Dz; 78.55.Et; 79.60.-i; 68.55.Jk |
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