1. School of Chemistry and Biochemistry and Center for Organic Photonics and Electronics, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
2. 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-ku, Fukuoka 819-0395, Japan