Affiliation: | 1. Department of Polymer Science and Engineering, Graduate School of Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa 992-8510, Japan;2. Department of Organic Device Engineering, Graduate School of Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa 992-8510, Japan;3. Hitachi Research Laboratory, Hitachi, Ltd., 7-1-1 Omika, Hitachi 319-1292, Japan |