화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.71, 137-149, March, 2019
DOI10.1016/j.jiec.2018.11.016  Export Citation
Structural optimization in the same polymer backbones for efficient polymer solar cells: Relationship between steric hindrance and molecular weight
Sung Jae Jeon, Jeong Eun Yu, Yong Woon Han, Il Soon Suh, and Doo Kyung Moon†
  • Nano and Information Materials (NIMs) Laboratory, Department of Chemistry Engineering, Konkuk University, 120, Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
E-mail:
Structural optimization by using donor.acceptor (D-A) conjugated polymers is a promising strategy for improving the power conversion efficiencies (PCEs) of polymer solar cells (PSCs). In this study, we report the best PCE of 8.9% based on PC71BM that was achieved by using a 250 nm thick active layer in an inverted device through the optimization of side chains of P(2DBDT-DTffBT) backbones. Specifically, by varying the alkyl side chain lengths and shapes in the acceptor unit of polymers, the effect of side chain engineering on photovoltaic performance was systematically studied in terms of the relationship between steric hindrance and molecular weight.
Keywords:Polymer solar cells;D-A conjugated polymers;Computational simulation;Dihedral angles
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