1. Department of Organic and Polymeric Materials; Tokyo Institute of Technology; 2-12-1 O-okayama, Meguro Tokyo 152-8552 Japan
2. Japan Laboratory; LG Display Co. Ltd., Glass Cube Shinagawa; 4-13-14 Higashi-shinagawa, Shinagawa Tokyo 140-0002 Japan
3. Organic Device Engineering; Yamagata University; 4-3-16 Jonan Yonezawa Yamagata 992-8510 Japan