1. Device
Research Laboratory, Department of Electrical Engineering, University of California, Los Angeles 90095, United States
2. National Nano
Device Laboratories, Hsinchu 30078, Taiwan
3. Physical
Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
4. SZU-NUS Collaborative Innovation Center for Optoelectronic Science & Technology and Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
5. Research
Center for Applied Sciences, Academia Sinica, Taipei 10617, Taiwan