1. Center for Organic Photonics and Electronics Research, Kyushu University, 744 Motooka, Nishi, Fukuoka 819-0395, Japan
2. International Institute for Carbon Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Motooka, Nishi, Fukuoka 819-0395, Japan
3. Japan Science and Technology Agency (JST), ERATO, Adachi Molecular Exciton Engineering Project, 744 Motooka, Nishi, Fukuoka 819-0395, Japan
4. Institut Parisien de Chimie Moléculaire (IPCM), Chimie des Polymères, Sorbonne Université, UPMC Université Paris 06, UMR 8232, F-75005 Paris, France
5. Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), CNRS-Université de Strasbourg, UMR 7504, F-67034 Strasbourg, France
6. Innovative Organic Device R&D Laboratory, Institute of Systems, Information Technologies and Nanotechnologies (ISIT), Fukuoka Industry-Academia Symphonicity (FiaS) 2-110, 4-1 Kyudaishinmachi, Nishi, Fukuoka 819-0388, Japan