Influence of substrate temperature on physical properties of sprayed Zn0.85Mn0.15O films
Zn1-xMnxO thin films have been synthesized by chemical spray pyrolysis at different substrate temperatures in the range, 250–450 ℃ for a manganese composition, x = 15%, on corning 7059 glass substrates. The as-grown layers were characterized to evaluate their chemical and physical behaviour with sub...
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Veröffentlicht in: | Current applied physics 2009, 9(3), , pp.667-672 |
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Sprache: | eng |
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Zusammenfassung: | Zn1-xMnxO thin films have been synthesized by chemical spray pyrolysis at different substrate
temperatures in the range, 250–450 ℃ for a manganese composition, x = 15%, on corning 7059 glass substrates.
The as-grown layers were characterized to evaluate their chemical and physical behaviour with
substrate temperature. The change of dopant level in ZnO films with substrate temperature was analysed
using X-ray photoelectron spectroscope measurements. The X-ray diffraction studies revealed that all the
films were strongly oriented along the (002) orientation that correspond to the hexagonal wurtzite structure.
The crystalline quality of the layers increased with the increase of substrate temperature up to
400 ℃ and decreased thereafter. The crystallite size of the films varied in the range, 14–24 nm. The surface
morphological studies were carried out using atomic force microscope and the layers showed a
lower surface roughness of 4.1 nm. The optical band gap of the films was ~3.35 eV and the electrical
resistivity was found to be high, ~104Ωcm. The films deposited at higher temperatures (>350 ℃) showed
ferromagnetic behaviour at 10 K. KCI Citation Count: 4 |
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ISSN: | 1567-1739 1878-1675 |
DOI: | 10.1016/j.cap.2008.06.016 |