1. SZU‐NUS Collaborative Innovation Center and International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education Institute of Microscale Optoelectronics Shenzhen University Shenzhen 518060 China
2. Department of Chemistry National University of Singapore 3 Science Drive 3 Singapore 117543 Singapore
3. School of Physics and Electronics Hunan Key Laboratory of Nanophononics and Devices Central South University 932 South Lushan Road Changsha Hunan 410083 P. R. China