[5p-PA3-1~46] 12.5 Organic solar cells

[5p-PA3-2] Development of Highly Crystalline Donor Materials Based on High-Planar Central Building Blocks for Organic Solar Cells

〇(DC)Seiichi Furukawa¹, Hideaki Komiyama², Takuma Yasuda^1,2 (1.Graduate School of Eng., Kyushu Univ., 2.INAMORI Frontier Research Center, Kyushu Univ.)

Keywords:organic solar cells, organic semiconductors, photovoltaics

We developed a group of donors exhibiting high crystallinity and carrier mobilities with a high planar thienyl-vinyl-thienylene group as a central unit, and investigated structure-property relationship of organic solar cells. We revealed that three-dimensional crystalline growth were induced by solvent vapor annealing for donors possessing highly polar substituents at the ends, leading to high carrier mobility and high power conversion efficiency in devices.