Nitrides Seminar - Mohammed "Mo" Abo Alreesh, Graduate Student Researcher

10/25/2017 12PM ESB 1001

Na flux grown bulk GaN crystals at UCSB with a focus on impurities and their effect on the crystal transparency

Mohammed Abo Alreesh a , Paul Von Dollen a , Thomas F. Malkowski a , Tom Mates a , Hamad Albrithen b,c , Steven DenBaars a , Shuji Nakamura a , James S. Speck a

a Materials Department, University of California, Santa Barbara
b King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia
c Physics and Astronomy Department, King Saud University, Riyadh, Saudi Arabia

In the first part of this seminar, I will present three bulk GaN growth techniques with a focus on the sodium flux technique and its main achievements. In addition, I will address the sodium flux growth system at UCSB, its advantages, disadvantages, and growth results. In the second part, I will address the impurities (oxygen, sodium, carbon, and molybdenum) which are present in our bulk GaN.