1. Key Laboratory of Luminescence and Optical Information Ministry of Education Beijing Jiaotong University Beijing 100044 China
2. Organic Optoelectronic Materials Laboratory Department of Chemistry College of Science Korea University Seoul 02841 Republic of Korea
3. College of Physics and Electronic Engineering Chongqing Normal University Chongqing 401331 P. R. China
4. Key Lab for Special Functional Materials Ministry of Education National and Local Joint Engineering Research Center for High‐Efficiency Display and Lighting Technology, and School of Materials Henan University Kaifeng Henan 475004 China
5. School of Materials Science and Engineering Engineering Research Center of Electronic Information Materials and Devices Ministry of Education Guangxi Key Laboratory of Information Materials Guilin University of Electronic Technology 1st Jinji Road Guilin 541004 China
6. College of Physics and Electronic Engineering Taishan University Taian Shandong Province 271021 China