DESIGN and FABRICATION of Gan-BASED HETEROJUNCTION BIPOLAR TRANSISTORS
DESIGN AND FABRICATION OF GaN-BASED HETEROJUNCTION BIPOLAR TRANSISTORS By KYU-PIL LEE A DISSERTATION PRESENTED TO THE GRADUATE SCHOOL OF THE UNIVERSITY OF FLORIDA IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY UNIVERSITY OF FLORIDA 2003 In his heart a man plans his course, But, the LORD determines his steps. Proverbs 16:9 ACKNOWLEDGMENTS First and foremost, I would like to express great appreciation with all my heart to Professor Pearton and Professor Ren for their expert advice, guidance, and instruction throughout the research. I also give special thanks to members of my committee (Professor Abernathy, Professor Norton, and Professor Singh) for their professional input and support. Additional special thanks are reserved for the people of our research group (Kwang-hyun, Kelly, Ben, Jihyun, and Risarbh) for their assistance, care, and friendship. I am very grateful to past group members (Sirichai, Pil-yeon, David, Donald and Bee). 1 also give my thanks to P. Mathis for her endless help and kindness; and to Mr. Santiago who is network assistant in the Chemical Engineering Department, because of his great help with my simulation. I also thank my discussion partners about material growth technologies, Dr. B. Gila, Dr. M. Overberg, Jerry and Dr. Kang-Nyung Lee. I would like to give my thanks to my friends (especially Kyung-hoon, Young-woo, Se-jin, Byeng-sung, Yong-wook, and Hyeng-jin). Even when they were very busy, they always helped my research work without hesitation. I cannot forget Samsung's vice president Dr. Jong-woo Park’s devoted help, and the steadfast support from Samsung Electronics.
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