Xiao-Kai Gong1, Xiao-Song Zhang1, Xin Liu1, Ru-Kun Ding1, Jia-Jia Zhang1, Hao Yin1, Zhao-Wei Zhang1, Lan Li1, Jian-Ping Xu1
1Key Laboratory of Display Materials and Photoelectric Devices, Ministry of Education, Tianjin Key Laboratory for Photoelectric Materials and Devices and School of Materials Science and Engineering, Institute of Material Physics, Tianjin University of Technology, Tianjin, 300384, China