1. College of Optical and Electronic Technology, China Jiliang University, Hangzhou 310018, P. R. China
2. School of Materials Science and Engineering, State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, China
3. Wenzhou Key Laboratory of Novel Optoelectronic and Nano Materials, Institute of Wenzhou, Zhejiang University, Wenzhou 325006, China
4. Fukuoka i3-Center for Organic Photonics and Electronics Research (i3-opera), 5-14 Kyudai-shimmachi, Nishi, Fukuoka 819-0388, Japan
5. Center for Organic Photonics and Electronics Research (OPERA), Kyushu University, 744 Motooka, Nishi, Fukuoka 819-0395, Japan