Near-Ultraviolet InGaN LEDs Grown on Patterned Sapphire Substrates

D. S. Wuu, W. K. Wang, W. C. Shih, J. S. Fang, C. E. Lee, W. Y. Lin and R. H. Horng 1 Department of Material Engineering, National Chung Hsing University, Taichung 402, Taiwan R.O.C Phone: +886-4-22855046 E-mail: dsw@dragon.nchu.edu.tw 2 Department of Materials Science & Engineering, National Huwei University of Sci. & Technol., Huwei 632, Taiwan R.O.C 3 Institute of Precision Engineering, National Chung Hsing University, Taichung 402, Taiwan R.O.C