TY - JOUR
T1 - High-Performance Mid-Bandgap Fused-Pyrene Electron Acceptor
AU - Cai, Guilong
AU - Xue, Peiyao
AU - Chen, Zhenyu
AU - Li, Tengfei
AU - Liu, Kuan
AU - Ma, Wei
AU - Lian, Jiarong
AU - Zeng, Pengju
AU - Wang, Yiping
AU - Han, Ray P.S.
AU - Zhan, Xiaowei
N1 - Funding Information:
X.Z. thanks the NSFC (21734001 and 51761165023). W.M. is thankful for the support from the Ministry of Science and Technology (2016YFA0200700) and NSFC (21875182 and 21534003). X-ray data were acquired on beamlines 7.3.3 and 11.0.1.2 at the Advanced Light Source, which is supported by the Director, Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract DE-AC02-05CH11231. The authors thank Chenhui Zhu at beamline 7.3.3 and Cheng Wang at beamline 11.0.1.2 for assistance with data acquisition.
Funding Information:
X.Z. thanks the NSFC (21734001 and 51761165023). W.M. is thankful for the support from the Ministry of Science and Technology (2016YFA0200700) and NSFC (21875182 and 21534003). X-ray data were acquired on beamlines 7.3.3 and 11.0.1.2 at the Advanced Light Source, which is supported by the Director, Office of Science Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract DE-AC02-05CH11231. The authors thank Chenhui Zhu at beamline 7.3.3 and Cheng Wang at beamline 11.0.1.2 for assistance with data acquisition.
Publisher Copyright:
Copyright © 2018 American Chemical Society.
PY - 2019/9/10
Y1 - 2019/9/10
N2 - A new mid-bandgap nonfullerene acceptor, FPIC, is designed and synthesized on the basis of a novel fused-pyrene electron-donating core. FPIC exhibits intense light absorption between 500 and 750 nm, with a maximum molar extinction coefficient of 2.3 × 105 M-1 cm-1 at 645 nm, a medium optical bandgap of 1.63 eV, and a high electron mobility of 1.7 × 10-3 cm2 V-1 s-1. The ternary blend organic solar cells (OSCs) consisting of low-bandgap donor PTB7-Th, ultra-narrow-bandgap nonfullerene acceptor F8IC, and FPIC yield a high power conversion efficiency (PCE) of 13.0%, significantly surpassing the PCE value of the PTB7-Th/F8IC binary blend OSCs (9.55%). The ternary blend exhibits complementary absorption, effective exciton dissociation, balanced charge transport, and reduced charge recombination, leading to the improvement in open-circuit voltage, short-circuit current density, and fill factor relative to those of its PTB7-Th/F8IC counterpart. This work indicates that the mid-bandgap fused-pyrene electron acceptor FPIC is a promising third component for enhancing the photovoltaic performance of low-bandgap donor/acceptor binary blends.
AB - A new mid-bandgap nonfullerene acceptor, FPIC, is designed and synthesized on the basis of a novel fused-pyrene electron-donating core. FPIC exhibits intense light absorption between 500 and 750 nm, with a maximum molar extinction coefficient of 2.3 × 105 M-1 cm-1 at 645 nm, a medium optical bandgap of 1.63 eV, and a high electron mobility of 1.7 × 10-3 cm2 V-1 s-1. The ternary blend organic solar cells (OSCs) consisting of low-bandgap donor PTB7-Th, ultra-narrow-bandgap nonfullerene acceptor F8IC, and FPIC yield a high power conversion efficiency (PCE) of 13.0%, significantly surpassing the PCE value of the PTB7-Th/F8IC binary blend OSCs (9.55%). The ternary blend exhibits complementary absorption, effective exciton dissociation, balanced charge transport, and reduced charge recombination, leading to the improvement in open-circuit voltage, short-circuit current density, and fill factor relative to those of its PTB7-Th/F8IC counterpart. This work indicates that the mid-bandgap fused-pyrene electron acceptor FPIC is a promising third component for enhancing the photovoltaic performance of low-bandgap donor/acceptor binary blends.
UR - http://www.scopus.com/inward/record.url?scp=85064489447&partnerID=8YFLogxK
U2 - 10.1021/acs.chemmater.8b04668
DO - 10.1021/acs.chemmater.8b04668
M3 - Journal article
AN - SCOPUS:85064489447
SN - 0897-4756
VL - 31
SP - 6484
EP - 6490
JO - Chemistry of Materials
JF - Chemistry of Materials
IS - 17
ER -
