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Journal of Spectroscopy
Volume 2016, Article ID 5127348, 6 pages
http://dx.doi.org/10.1155/2016/5127348
Research Article

A Study of Structural and Photoluminescence for Al-Doped CdO Thin Films

Department of Physics, Chosun University, Gwangju 501-759, Republic of Korea

Received 24 January 2016; Revised 4 April 2016; Accepted 19 April 2016

Academic Editor: Eugen Culea

Copyright © 2016 Bong Ju Lee and Jin Jeong. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Al-doped CdO thin films were prepared by radio frequency magnetron sputtering at different deposition time and substrate temperature. X-ray diffraction showed that the changes in the intensities of the (200), (220), and (311) planes followed a similar trend with increase in deposition time. The surface of the thin film was examined by scanning electron microscopy. Grain sizes of Al-doped CdO thin films increased significantly with increasing deposition time. The film thicknesses were 0.09, 0.12, 0.20, and 0.225 μm for the deposition times of 1, 2, 3, and 4 h, respectively. The photoluminescence spectra of the Al-doped CdO thin films were measured at room temperature. The photoluminescence wavelength changed in the sequence, green, blue, green, and blue, with increasing deposition time, which indicates that blue light emitting films can be fabricated by adjusting the processing parameters.