1. Laboratory for Mesoscopic Physics and Department of Physics Peking University Beijing 100871 P. R. China
2. Co‐Innovation Center for Micro/Nano Optoelectronic Materials and Devices Chongqing University of Arts and Sciences Yongchuan Chongqing 402160 P. R. China
3. New Display Device and System Integration Collaborative Innovation Center of the West Coast of the Taiwan Strait Fuzhou 350002 P. R. China