提高AlGaN基DUV-LED效率的薄p-GaN上的銀基鏤空反射電極Ag-based hollow reflective electrode on thin p-GaN layer for improving the light output efficiency of AlGaN-based deep-ultraviolet light-emitting diodes周玉剛南京大學電子科學與工程學院教授ZHOU YugangProfesor of School of Electronic Science and Engineering, Nanjing University