1. Guangdong Industrial Training Center, Guangdong Polytechnic Normal University, Guangzhou, China
2. Institute of the Opto-Electronic Materials and Technology, Guangdong Engineering Technology Research Center of Optoelectronic Functional Materials and Devices, South China Normal University, Guangzhou, China
3. Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, Guangzhou, China