1. Institute of Applied Physics and Materials Engineering University of Macau Macau 999078 China
2. Department of Materials Science and Engineering and Shenzhen Engineering Research and Development Center for Flexible Solar Cells Southern University of Science and Technology Shenzhen 518055 China
3. Academy for Advanced Interdisciplinary Studies Southern University of Science and Technology Shenzhen 518055 China
4. Department of Physics Liaoning University of Science and Technology Anshan Liaoning 114501 China
5. School of Physics Dalian University of Technology Dalian Liaoning 116023 China