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A Wide Bandgap Polymer with Strong π–π Interaction for Efficient Fullerene‐Free Polymer Solar Cells
Author(s) -
Yao Huifeng,
Yu Runnan,
Shin Tae Joo,
Zhang Hao,
Zhang Shaoqing,
Jang Bomee,
Uddin Mohammad Afsar,
Woo Han Young,
Hou Jianhui
Publication year - 2016
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201600742
Subject(s) - materials science , fullerene , band gap , polymer , optoelectronics , acceptor , energy conversion efficiency , nanotechnology , composite material , organic chemistry , physics , chemistry , condensed matter physics
A wide bandgap polymer donor PBDTS‐DTBTO is designed and synthesized, which shows an optical bandgap of 1.76 eV and strong π–π interaction. By using a low‐bandgap acceptor ITIC, power conversion efficiency over 9% is achieved in the fullerene‐free polymer solar cells (PSC) device. Furthermore, the PSC devices fabricated by PBDTS‐DTBTO:ITIC show relatively small sensitivity to variations of the active layer thickness.