1. Center for Organic Photonics and Electronics Research (OPERA) Kyushu University 744 Motooka Fukuoka 819‐0395 Japan
2. Japan Science and Technology Agency (JST) Exploratory Research for Advanced Technology (ERATO) Adachi Molecular Exciton Engineering Project Kyushu University 744 Motooka Fukuoka 819‐0395 Japan
3. International Institute for Carbon‐Neutral Energy Research (WPI‐I 2CNER) Kyushu University 744 Motooka Fukuoka 819‐0395 Japan