Structural and optical properties of Dy doped ZnO thin films prepared by pyrolysis technique

Ilanchezhiyan, P., Kumar, G. Mohan, Vinu, A., Al-Deyab, Salem S. and Jayavel, R. (2010) Structural and optical properties of Dy doped ZnO thin films prepared by pyrolysis technique. International Journal of Nanotechnology, 7 9-12: 1087-1097. doi:10.1504/IJNT.2010.034713


Author Ilanchezhiyan, P.
Kumar, G. Mohan
Vinu, A.
Al-Deyab, Salem S.
Jayavel, R.
Title Structural and optical properties of Dy doped ZnO thin films prepared by pyrolysis technique
Journal name International Journal of Nanotechnology   Check publisher's open access policy
ISSN 1475-7435
1741-8151
Publication date 2010-01
Sub-type Article (original research)
DOI 10.1504/IJNT.2010.034713
Volume 7
Issue 9-12
Start page 1087
End page 1097
Total pages 11
Place of publication Geneva, Switzerland
Publisher Inderscience Publishers
Language eng
Formatted abstract
Structural, optical and Raman scattering studies have been performed on the Dy substituted zinc oxide (ZnO) thin films (1, 3 & 5 wt%) fabricated through a sol gel based spray pyrolysis technique on preheated glass substrates. The hexagonal crystal structure with (002) preferred orientation was confirmed from the X-ray diffraction analysis for the undoped and Dy doped ZnO films. The crystallinity of the films decreased with increasing Dy content with a corresponding decease in the intensity of (002) orientations. Reduction in grain size with increase in Dy content was observed. The shift of E2 (high) mode observed in the Raman spectra towards the lower wave numbers with increase in Dy concentration was correlated with the increase in stress on the ZnO matrix upon Dy substitution. The optical band gap was found to increase from 3.17 eV to 3.27 eV with a transparency of 80% for higher Dy concentrations. A blue shift in the NBE emission was also observed for Dy doping.
Keyword II-VI semiconductor
X-ray diffraction
Optical properties
Raman studies
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Australian Institute for Bioengineering and Nanotechnology Publications
 
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