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Journal of Nanomaterials
Volume 2013 (2013), Article ID 891365, 6 pages
http://dx.doi.org/10.1155/2013/891365
Research Article

Annealing Effects of Sputtered Cu2O Nanocolumns on ZnO-Coated Glass Substrate for Solar Cell Applications

1Department of Electro-Optical Engineering, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao E. Road, Taipei 106, Taiwan
2Materials & Electro-Optics Research Division, Chung-Shan Institute of Science and Technology, P.O. Box No. 90008-8-6, Lung Tan, Taoyuan 325, Taiwan

Received 19 December 2012; Revised 5 February 2013; Accepted 13 February 2013

Academic Editor: Sanqing Huang

Copyright © 2013 Lung-Chien Chen 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

Cuprous oxide (Cu2O) films were prepared on an indium tin oxide glass substrate by radiofrequency magnetron sputtering using a high-purity Cu target. The temperature of annealing was varied to obtain Cu2O thin films with various elements, compositions, and surface structures. The p-Cu2O thin films thus formed were characterized by FESEM and XRD. After annealing at 500C, the bilayer structure which consisted of Cu nanoclusters on the surface of a film of Cu2O nanocolumns was observed. The Cu2O solar cell with the bilayered structure exhibited poor power conversion efficiency.