Affiliation: | 1. Institute of Strength Physics and Materials Science, 2/4, pr. Akademicheskii, 634021, Tomsk, Russia;2. Tomsk Polytechnic University, 30 Lenin Avenue, 634050, Tomsk, Russia;1. Advanced LED Technology Development Project, Samsung Electronics Co. Ltd., Yongin 446-711, Gyeonggi, South Korea;2. Department of Semiconductor Engineering, Cheongju University, Cheongju 360-746, Chungbuk, South Korea |