[15p-303-1~16] 12.5 Organic solar cells

[15p-303-4] Donor/Acceptor Domain Interface of All-Polymer Blend Solar Cells Visualized by Conductive AFM

〇Hiroaki Benten¹, Miki Osaka², Hideo Ohkita², Shinzaburo Ito² (1.NAIST, 2.Kyoto Univ.)

Keywords:conjugated polymer, polymer solar cell, conductive atomic force microscopy

The intermixed donor/acceptor region in conjugated polymer blends composed of a poly(3-hexylthiophene) (P3HT, donor) and a fluorene-based copolymer (PF12TBT, acceptor) was visualized by electrical characterization via C-AFM measurements. The evolving features of the intermixed region accounted for the temperature dependence of the photovoltaic properties of the P3HT/PF12TBT blend solar cells.