1. Department of Mechanical Science and Engineering, University of Illinois, 1204 West Green Street, Urbana, Illinois 61801, United States
2. International Institute for Carbon Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
3. Center for Organic Photonics and Electronics Research (OPERA), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
4. Adachi Molecular Exciton Engineering Project, Japan Science and Technology Agency (JST), ERATO, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
5. Department of Metallurgical and Materials Engineering, Colorado School of Mines, 1500 Illinois Street, Golden, Colorado 80401, United States