1. Tianjin
Key Laboratory of Photoelectric Materials and Devices, National Demonstration
Center for Experimental Function Materials Education, School of Materials
Science and Engineering, Tianjin University of Technology, Tianjin 300384, China
2. Key
Laboratory of Display Materials and Photoelectric Devices, Tianjin
University of Technology, Ministry of Education, Tianjin 300384, China
3. Fujian
Provincial Key Laboratory of Semiconductors and Applications, Collaborative
Innovation Center for Optoelectronic Semiconductors and Efficient
Devices, Department of Physics, Xiamen University, Xiamen 361005, China