1. Key Laboratory of Low-Grade Energy Utilization Technologies and Systems, Ministry of Education, School of Power Engineering; Chongqing University; Chongqing 400044 China
2. Department of Materials Science and Engineering; National University of Singapore; Singapore 117574 Singapore
3. Chongqing Institute of Green and Intelligent Technology; Chinese Academy of Sciences; Chongqing 400714 China
4. Key Laboratory of Optoelectronic Technology & Systems; Ministry of Education; Chongqing 400044 China
5. School of Materials Science and Engineering; Chongqing University; Chongqing 400044 China