**Author details**

Dongxiang Luo1 , Zhiyuan He<sup>2</sup> , Peng Xiao3 , Qunxing Liu<sup>2</sup> and Baiquan Liu4,5\*

\*Address all correspondence to: bqliu1012@gmail.com

1 School of Materials and Energy, Guangdong University of Technology, Guangzhou, China

2 China Electronic Produce Reliability and Environmental Testing Research Institute, Guangzhou, China

3 School of Physics and Optoelectronic Engineering, Foshan University, Foshan, China

4 Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, China

5 LUMINOUS! Center of Excellence for Semiconductor Lighting and Displays, School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore
