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International Journal of Photoenergy
Volume 2014, Article ID 128235, 6 pages
http://dx.doi.org/10.1155/2014/128235
Research Article

Prepared and Characteristics of ZnO:YAG/Silicon Nanostructure Diodes Prepared by Ultrasonic Spraying

Department of Electro-Optical Engineering, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao E. Road, Taipei 106, Taiwan

Received 5 February 2014; Revised 2 May 2014; Accepted 3 May 2014; Published 26 May 2014

Academic Editor: Chao-Rong Chen

Copyright © 2014 Chih-Hung Hsu et al. 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

This work presents a novel white light source. An yttrium aluminum garnet (YAG) phosphor incorporated zinc oxide (ZnO) (ZnO:YAG) film is deposited on a silicon substrate by ultrasonic spray pyrolysis to form a nanostructure diode. A nanoflower consisting of a hexagonal nanopetal is formed on the surfaces of the silicon substrate. A white broad band at the room temperature photoluminescence ranging from 420 to 650 nm for the ZnO:YAG/silicon nanostructure diode was observed. The white broad band consists of the emissions of defect level transition of the ZnO film and the 5D4 level to the 7F6 and 7F5 level transitions of Ce3+ ions.