1. Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials, Soochow University, Suzhou, Jiangsu 215123, P. R. China
2. Nano-organic
Photoelectronic Laboratory and Key Laboratory of Photochemical Conversion
and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
3. College
of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
4. School
of Optoelectronic Information, University of Electronic Science and Technology of China, Chengdu 610054, P. R. China