11:30 〜 11:45 [M-7-3] Net Acceptor Type Trap Density in Semi-insulating GaN Layers ○T. Tanaka1, N. Ito1, M. Akutsu1, K. Chikamatsu1, S. Takado1, K. Nakahara1 (1.ROHM Co., Ltd.(Japan)) https://doi.org/10.7567/SSDM.2015.M-7-3