Author Affiliations

Sisi Tan,¹ Xiaoming Wei,¹ Shanhui Xu,² Zhongmin Yang,^2,3 Bowen Li,¹ and Kenneth K. Y. Wong^1,*

¹Department of Electrical and Electronic Engineering, the University of Hong Kong, Pokfulam Road, Hong Kong, China

²Institute of Optical Communication Materials and State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, 510640

^*Corresponding author: kywong@eee.hku.hk

³ yangzm@scut.edu.cn