1. Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division, King Abdullah University of Science & Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia
2. Department of Electrical and Computer Engineering, University of California−San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States of America
3. Institute
of Photonics and Optoelectronics and Department of Electrical Engineering, National Taiwan University, Taipei 10617, Taiwan
4. Materials Science and Engineering Program, University of California−San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States of America
5. Advanced
Technology Department, AU Optronic Corporation, Taichung, Taiwan, Republic of China
6. Qualcomm
Institute, University of California−San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States of America