1. Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, 430074, Wuhan, Hubei, P. R. China
2. School of Energy and Environment, Department of Materials Science and Engineering, City University of Hong Kong, Kowloon Tong, Hong Kong 999077, People's Republic of China
3. School of Optical and Electronic Information (OEI), Huazhong University of Science and Technology (HUST), Wuhan, Hubei, 430074, P. R. China
4. Key Laboratory of Advanced Technique, Preparation for Renewable Energy Materials, Ministry of Education, Yunnan Normal University, Kunming 650500, PR China
5. Optics Valley Laboratory, Wuhan, Hubei 430074, People's Republic of China