123rd General Meeting of the KCS

Type Poster Presentation
Area Polymer Chemistry
Room No. Exhibition Hall 2
Time 4월 19일 (금요일) 11:00~12:30
Code POLY.P-18
Subject High-performing fullerene free polymer solar cell fabricated by a simple process using new conjugated terpolymers
Authors Jihyun Kim, Youngun Kim, Jiwon Yoon, Chae Yeong Kim, Min Ju Cho, Dong Hoon Choi*
Department of Chemistry, Korea University, Korea
Abstract Recently, terpolymers showed the several desirable attributes-such as high solubility, broad absorption range, finely tuned energy levels, and improved nanophase internal morphology and orientation of polymer chains in the blends over binary copolymers bearing one each of the donor and acceptor monomeric units. In this study, A series of conjugated terpolymers, P2–P4, based on 4,8-bis(5-(2-ethylhexyl)thiophen-2 yl)benzo[1,2-b:4,5-b’]dithiophene as the electron-donating unit, methyl-3-thiophenecarboxylate (3MT) as the weak electron-accepting unit, and 1,3-bis(2-ethylhexyl)benzo[1,2-c:4,5-c’]dithiophene-4,8-dione (BDD) as the strong electron-accepting unit were synthesized to investigate the effect of the contents of 3MT and BDD on their optical and electrochemical properties and the performance of the derived fullerene-free polymer solar cell (PSC) devices. Among the three terpolymers, the as-cast blend film of P3:acceptor with complementary absorption and favorable internal morphology exhibited the highest power conversion efficiency of 10.26% with a high open circuit voltage of 0.94 V and short circuit current density of 17.18 mA cm-2 in the PSC.
E-mail jihyun2653@gmail.com