1. College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
2. MOE Key Laboratory of Low-grade Energy Utilization Technologies and Systems, CQU-NUS Renewable Energy Materials & Devices Joint Laboratory, School of Energy & Power Engineering, Chongqing University, Chongqing 400044, China
3. Analytical and Testing Center, Chongqing University, Chongqing 401331, China
4. School of Materials Science and Engineering, Sichuan University, Chengdu 610064, China
5. Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China
6. College of Physics, Chongqing University, Chongqing 401331, China