a
Jiangsu Key Laboratory for Organic Electronics & Information Displays (KLOEID) and Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications (NUPT), 9 Wenyuan Road, Nanjing 210046, People's Republic of China
E-mail: iamlhxie@mjupt.edu.cn
;
Fax: +86 25 8349 2333
;
Tel: +86 25 8349 2333
b
State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering Jilin University, 2699 Qianjin Street, Changchun 130012, China