TY - JOUR
T1 - High-Performance Eight-Membered Indacenodithiophene-Based Asymmetric A-D-A Type Non-Fullerene Acceptors
AU - Li, Chao
AU - Song, Jiali
AU - Ye, Linglong
AU - Koh, Changwoo
AU - Weng, Kangkang
AU - Fu, Huiting
AU - Cai, Yunhao
AU - Xie, Yuanpeng
AU - Wei, Donghui
AU - Woo, Han Young
AU - Sun, Yanming
N1 - Publisher Copyright:
© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2019/1/1
Y1 - 2019/1/1
N2 - Indacenodithiophene (IDT) has been widely used as the central core to design high-performance acceptor-donor-acceptor (A-D-A)-type non-fullerene acceptors (NFAs). NFAs based on five-, six-, seven-, and nine-membered IDT have been successfully prepared. However, less research attention has been paid to the eight-membered IDT derivative. In this study, a novel asymmetric TTPTTT building block as an eight-membered IDT unit are designed and synthesized. The effect of nonfluorinated, monofluorinated, and difluorinated end-capping groups on the photovoltaic performance of TTPTTT-based NFAs are specifically investigated. By blending with the polymer donor PBT1-C, organic solar cells (OSCs) based on TTPTTT-IC, TTPTTT-2F, and TTPTTT-4F exhibited power conversion efficiencies (PCEs) of 7.91, 11.52, and 12.05%, respectively. Our results indicate that the asymmetric TTPTTT building block as an eight-membered IDT derivative is a promising central core unit for designing high-performance A-D-A type NFAs.
AB - Indacenodithiophene (IDT) has been widely used as the central core to design high-performance acceptor-donor-acceptor (A-D-A)-type non-fullerene acceptors (NFAs). NFAs based on five-, six-, seven-, and nine-membered IDT have been successfully prepared. However, less research attention has been paid to the eight-membered IDT derivative. In this study, a novel asymmetric TTPTTT building block as an eight-membered IDT unit are designed and synthesized. The effect of nonfluorinated, monofluorinated, and difluorinated end-capping groups on the photovoltaic performance of TTPTTT-based NFAs are specifically investigated. By blending with the polymer donor PBT1-C, organic solar cells (OSCs) based on TTPTTT-IC, TTPTTT-2F, and TTPTTT-4F exhibited power conversion efficiencies (PCEs) of 7.91, 11.52, and 12.05%, respectively. Our results indicate that the asymmetric TTPTTT building block as an eight-membered IDT derivative is a promising central core unit for designing high-performance A-D-A type NFAs.
KW - asymmetric non-fullerene acceptor
KW - indacenodithiophene derivative
KW - organic solar cells
KW - power conversion efficiency
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U2 - 10.1002/solr.201800246
DO - 10.1002/solr.201800246
M3 - Article
AN - SCOPUS:85081752756
SN - 2367-198X
VL - 3
JO - Solar RRL
JF - Solar RRL
IS - 1
M1 - 1800246
ER -
