Over 14% efficiency all-polymer solar cells enabled by a low bandgap polymer acceptor with low energy loss and efficient charge separation
Type
ArticleAuthors
Fan, Qunping
An, Qiaoshi
Lin, Yuanbao
Xia, Yuxin

Li, Qian
Zhang, Ming
Su, Wenyan
Peng, Wenhong
Zhang, Chunfeng
Liu, Feng

Hou, Lintao

Zhu, Weiguo

Yu, Donghong

Xiao, Min
Moons, Ellen

Zhang, Fujun

Anthopoulos, Thomas D.

Inganäs, Olle
Wang, Ergang

KAUST Department
Material Science and EngineeringPhysical Science and Engineering (PSE) Division
Material Science and Engineering Program
KAUST Solar Center (KSC)
KAUST Grant Number
OSR-2018-CARF/CCF-3079Date
2020Submitted Date
2020-06-08Permanent link to this record
http://hdl.handle.net/10754/666801
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Show full item recordAbstract
Obtaining both high open-circuit voltage (Voc) and short-circuit current density (Jsc) has been a major challenge for efficient all-polymer solar cells (all-PSCs). Herein, we developed a polymer acceptor PF5-Y5 with excellent optical absorption capability (onset extending to ∼880 nm and maximum absorption coefficient exceeding 105 cm-1 in a film), high electron mobility (3.18 × 10-3 cm2 V-1 s-1) and high LUMO level (-3.84 eV) to address such a challenge. As a result, the PBDB-T:PF5-Y5-based all-PSCs achieved a high power conversion efficiency of up to 14.45% with both a high Voc (0.946 V) and a high Jsc (20.65 mA cm-2), due to the high and broad absorption coverage, small energy loss (0.57 eV) and efficient charge separation and transport in the device, which are among the best values in the all-PSC field. In addition, the all-PSC shows a ∼15% improvement in PCE compared to its counterpart small molecule acceptor (Y5)-based device. Our results suggest that PF5-Y5 is a very promising polymer acceptor candidate for applications in efficient all-PSCs. This journal isCitation
Fan, Q., An, Q., Lin, Y., Xia, Y., Li, Q., Zhang, M., … Wang, E. (2020). Over 14% efficiency all-polymer solar cells enabled by a low bandgap polymer acceptor with low energy loss and efficient charge separation. Energy & Environmental Science, 13(12), 5017–5027. doi:10.1039/d0ee01828gSponsors
We thank the Swedish Research Council (2015-04853, 2016-06146, 2019-04683), the Swedish Research Council Formas, and the Wallenberg Foundation (2017.0186, 2016.0059) for financial support. D. Y. is thankful for the financial support from Innovation fund Denmark (INKA project) and Sino-Danish Centre for Education and Research (SDC). Y. L. and T. D. A. acknowledge support from the King Abdullah University of Science and Technology (KAUST) and Office of Sponsored Research (OSR) under Award No: OSR-2018-CARF/CCF-3079. W. S. is thankful for the project funded by Jinan University Postdoctoral Science Foundation, China Postdoctoral Science Foundation (2020M673054), and National Natural Science Foundation of China (22005121). Q. A. is thankful for the project funded by the National Natural Science Foundation of China (61805009).Publisher
Royal Society of Chemistry (RSC)Journal
Energy and Environmental ScienceAdditional Links
http://xlink.rsc.org/?DOI=D0EE01828Gae974a485f413a2113503eed53cd6c53
10.1039/d0ee01828g
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