Characterization of n-GaN with Naturally Textured Surface for Photoelectrochemical Hydrogen Generation - Liu, Shu-Yen; Sheu, J. K.; Ye, Jhao-Cheng; Tu, S. J.; Hsu, Che-Kang; Lee, M. L.; Kuo, C. H.; Lai, W. C. (Journal of the Electrochemical Society, 2010)