Quasi-normally off AlGaN/GaN high-electron-mobility transistors with p-type CuOx gate synthesized through magnetron reactive sputtering. - Lu, Honghao; Wen, Kangyao; Du, Fangzhou; Tang, Chuying; Cheng, Wei-Chih; Wei, Bowen; Li, Honglin; Wang, Qing; Yu, Hongyu (Materials Science in Semiconductor Processing, 2023)