1.3 kV Vertical GaN-Based Trench MOSFETs on 4-Inch Free Standing GaN Wafer. - He, Wei; Li, Jian; Liao, Zeliang; Lin, Feng; Wu, Junye; Wang, Bing; Wang, Maojun; Liu, Nan; Chiu, Hsien-Chin; Kuo, Hao-Chung; Lin, Xinnan; Li, Jingbo; et al. (Nanoscale Research Letters, 2022)