High-Performance AlGaN Double Channel HEMTs with Improved Drain Current Density and High Breakdown Voltage. - Zhang, Yachao; Li, Yifan; Wang, Jia; Shen, Yiming; Du, Lin; Li, Yao; Wang, Zhizhe; Xu, Shengrui; Zhang, Jincheng; Hao, Yue (Nanoscale Research Letters, 2020)