1. Center for Organic Photonics and Electronics Research (OPERA) Kyushu University 744 Motooka Nishi Fukuoka 819‐0395 Japan
2. JST ERATO Adachi Molecular Exciton Engineering Project c/o Center for Organic Photonics and Electronics Research (OPERA) Kyushu University 744 Motooka Nishi Fukuoka 819‐0395 Japan
3. International Institute for Carbon Neutral Energy Research (WPI‐I2CNER) Kyushu University 744 Motooka Nishi Fukuoka 819‐0395 Japan
4. National Metrology Institute of Japan National Institute of Advanced Industrial Science and Technology (AIST) Tsukuba Central 2, 1‐1‐1 Umezono Tsukuba Ibaraki 305‐8568 Japan
5. Department of Chemistry School of Science and Technology Kansei Gakuin University 2‐1 Gakuen Sanda Hyogo 669‐1337 Japan