1. Co-Innovation Center for Micro/Nano Optoelectronic Materials and Devices; Research Institute for New Materials and Technology; Chongqing University of Arts and Sciences; Chongqing 402160 P. R. China
2. Department of Materials Science and Engineering; Henry Samueli School of Engineering and Applied Science; University of California; Los Angeles CA 90015 USA
3. Jeffrey Sachs Center on Sustainable Development; Sunway University; No. 5, Jalan Universiti Bandar Sunway Selangor 47500 Malaysia