1. School of Optical and Electronic Information Huazhong University of Science and Technology 1037 Luoyu Road Wuhan Hubei 430074 China
2. Wuhan National Laboratory for Optoelectronics (WNLO) and School of Engineering Sciences Huazhong University of Science and Technology Wuhan Hubei 430074 China
3. School of Materials Science and Engineering Wuhan Institute of Technology Wuhan Hubei 430205 China
4. Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices Hubei University of Arts and Science Xiangyang Hubei 441053 China
5. Research Institute of Tsinghua University in Shenzhen Shenzhen Guangdong 518057 China
6. Ultrafast Photophysics of Quantum Devices Department of Physics and Astronomy Clemson University Clemson SC 29634 USA
7. Chemistry and Nanoscience Center National Renewable Energy Laboratory Golden CO 80401 USA