[15p-1F-1~14] 12.5 Organic solar cells

[15p-1F-2] Efficient All-Polymer Solar Cells Prepared by Ternary Blend of Conjugated Polymers

〇Hiroaki Benten¹, Takaya Nishida¹, Daisuke Mori¹, Hideo Ohkita¹, Shinzaburo Ito¹ (1.Kyoto Univ.)

Keywords:polymer solar cells,conjugated polymer,organic solar cells

Recently the highly efficient all-polymer solar cells have been fabricated by blending a PBDTTT-EF-T as electron donor with a N2200 as electron accepter. Although these binary blend solar cells efficiently harvests near-infrared light, there is an “absorption window” from 400 to 550 nm. In this study, a third polymer was added to the binary blend system in order to harvest the visible light. This approach resulted in the increase in the photocurrent and thus power conversion efficiency.