1. Center for Advanced Photovoltaics, Department of Electrical Engineering and Computer Science, South Dakota State University, Brookings, South Dakota 57007, United States
2. School of Science and Key Lab of Optoelectronic Materials and Devices, Huzhou University, Huzhou, Zhejiang Province 313000, People’s Republic of China
3. School of New Energy, Bohai University, Jinzhou 121013, China
4. Sichuan Research Center of New Materials, Institute of Chemical Materials, China Academy of Engineering Physics, Chengdu 610041, People’s Republic of China