1. The College of Materials Science and Engineering Beijing University of Technology Beijing 100124 China
2. Hanergy Chengdu R&D Center Hanergy Thin Film Power Group Chengdu Sichuan 610200 China
3. College of New Materials and New Energies Shenzhen Technology University Shenzhen 518118 China
4. Institute of New Energy and Low-Carbon Technology Sichuan University Chengdu 610027 China