1. Sichuan Research Center of New Materials Institute of Chemical Materials China Academy of Engineering Physics 596 Yinhe Road, Shuangliu Chengdu 610200 China
2. Department of Electrical Engineering, Center for Advanced Photovoltaics South Dakota State University Brookings SD 57007 USA
3. Institute for Advanced Study Chengdu University 2025 Chengluo Avenue Chengdu 610106 China
4. School of Materials Science and Engineering Shanxi Normal University Xi'an 710119 China