1 Electronic Components, Technology and Materials, Delft University of Technology 2628 CD Delft The Netherlands G.Q.Zhang@tudelft.nl.
2 School of Microelectronics, Southern University of Science and Technology Shenzhen 518055 China yehy@sustech.edu.cn.
3 Shenzhen Institute of Wide-Bandgap Semiconductors No. 1088, Xueyuan Rd, Xili, Nanshan District Shenzhen Guangdong China.
4 The Key Laboratory of Optoelectronic Technology & Systems, Education Ministry of China, College of Optoelectronic Engineering, Chongqing University Chongqing 400044 China.
5 Signify High Tech Campus 7 5656AE Eindhoven The Netherlands Willem.van.driel@signify.com.
6 Engineering Research Center of Integrated Circuits for Next-Generation Communications, Ministry of Education Nanshan District Shenzhen Guangdong China.