%0 Journal Article
%A Kang, Zhenjing
%A Chen, Shan-Ci
%A Ma, Yunlong
%A Wang, Jianbin
%A Zheng, Qingdong
%D 2017
%T Push–Pull
Type Non-Fullerene Acceptors for Polymer Solar Cells: Effect of the
Donor Core
%U https://acs.figshare.com/articles/journal_contribution/Push_Pull_Type_Non-Fullerene_Acceptors_for_Polymer_Solar_Cells_Effect_of_the_Donor_Core/5198542
%R 10.1021/acsami.7b05417.s001
%2 https://acs.figshare.com/ndownloader/files/8869675
%K power conversion efficiency
%K CDTDI
%K Polymer Solar Cells
%K non-fullerene small-molecule acceptors
%K INCN
%K core
%K ITDI
%K non-fullerene acceptors
%K PCE
%K PSC
%X There
has been a growing interest in the design and synthesis of non-fullerene
acceptors for organic solar cells that may overcome the drawbacks
of the traditional fullerene-based acceptors. Herein, two novel push–pull
(acceptor–donor–acceptor) type small-molecule acceptors,
that is, ITDI and CDTDI, with indenothiophene
and cyclopentadithiophene as the core units and 2-(3-oxo-2,3-dihydroinden-1-ylidene)malononitrile
(INCN) as the end-capping units, are designed and synthesized
for non-fullerene polymer solar cells (PSCs). After device optimization,
PSCs based on ITDI exhibit good device performance with
a power conversion efficiency (PCE) as high as 8.00%, outperforming
the CDTDI-based counterparts fabricated under identical
condition (2.75% PCE). We further discuss the performance of these
non-fullerene PSCs by correlating the energy level and carrier mobility
with the core of non-fullerene acceptors. These results demonstrate
that indenothiophene is a promising electron-donating core for high-performance
non-fullerene small-molecule acceptors.
%I ACS Publications