1 Graduate Institute of Photonics and Optoelectronics, National Taiwan University, Taipei 10617, Taiwan

2 Department of Photonics, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan

3 Semiconductor Research Center, Hon-Hai Research Institute, Taipei, Taiwan

4 Materials Department, University of California, Santa Barbara, CA 93106, United States of America

5 Department of Electrical and Computer Engineering, University of California, Santa Barbara, CA 93106, United States of America

6 Department of Electrical Engineering and Computer Science, University of Michigan, 1301 Beal Avenue, Ann Arbor, MI 48109, United States of America

7 School of Information Science and Technology, Fudan University, Shanghai 200433, People's Republic of China

8 King Abdullah University of Science and Technology, CEMSE Division, KAUST, Thuwal 23955-6900, Saudi Arabia

9 Department of Electronic and Electrical Engineering, The University of Sheffield, Sheffield S1 3JD, United Kingdom

10 Department of Electronic and Electrical Engineering, Southern University of Science and Technology, Shenzhen 518055, People's Republic of China

11 College of Optics and Photonics, University of Central Florida, Orlando, FL 32816, United States of America

12 Department of Electrical Engineering, Yale University, 15 Prospect Street, New Haven, CT 06520, United States of America

13 Saphlux Inc, Branford, CT 06405, United States of America

14 Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, People's Republic of China

15 KIMM, Korea Institute of Machinery and Materials, Daejeon 34103, Republic of Korea

16 CAMM, Centre for Advanced Meta-Materials, Daejeon 34103, Republic of Korea

17 PlayNitride Inc, No. 13, Kezhong Road, Zhunan Township, Miaoli 350401, Taiwan

18 National Laboratory of Solid State Microstructures, School of Electronic Science and Engineering and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, People's Republic of China

19 Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, Nanjing, People's Republic of China

20 Suzhou Laboratory, Suzhou, People's Republic of China

21 School of Integrated Circuits, Nanjing University, Suzhou, People's Republic of China

22 Industrial Technology Research Institute, Chutung, Hsinchu 310401, Taiwan