1. Wuhan National Laboratory for Optoelectronics (WNLO) Huazhong University of Science and Technology (HUST) 1037 Luoyu Road Wuhan Hubei 430074 P. R. China
2. School of Optical and Electronic Information Huazhong University of Science and Technology (HUST) 1037 Luoyu Road Wuhan Hubei 430074 P. R. China
3. School of Energy and Environment & Department of Materials Science and Engineering City University of Hong Kong Kowloon Tong Hong Kong 999077 China
4. Wenzhou Advanced Manufacturing Technology Research Institute of Huazhong University of Science and Technology Wenzhou Zhejiang 325035 P. R. China
5. Key Laboratory of Advanced Technique & Preparation for Renewable Energy Materials Ministry of Education Yunnan Normal University Kunming 650500 P. R. China