SZU-NUS Collaborative Innovation Center for Optoelectronic Science&Technology International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education College of Optoelectronic Engineering Shenzhen University Shenzhen 518060 China;
Department of Physics National University of Singapore 2 Science Drive 3 Singapore 117551 Singapore;
Department of Physics National University of Singapore 2 Science Drive 3 Singapore 117551 Singapore;
Department of Physics National University of Singapore 2 Science Drive 3 Singapore 117551 Singapore;
Department of Materials Science and Engineering National University of Singapore Singapore 117574 Singapore;
SZU-NUS Collaborative Innovation Center for Optoelectronic Science&Technology International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education College of Optoelectronic Engineering Shenzhen University Shenzhen 518060 China;
Department of Physics National University of Singapore 2 Science Drive 3 Singapore 117551 Singapore;
Centre for Advanced 2D Materials National University of Singapore Block S14 6 Science Drive 2 Singapore 117546 Singapore;
