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dc.contributor.authorFan, Qunping
dc.contributor.authorAn, Qiaoshi
dc.contributor.authorLin, Yuanbao
dc.contributor.authorXia, Yuxin
dc.contributor.authorLi, Qian
dc.contributor.authorZhang, Ming
dc.contributor.authorSu, Wenyan
dc.contributor.authorPeng, Wenhong
dc.contributor.authorZhang, Chunfeng
dc.contributor.authorLiu, Feng
dc.contributor.authorHou, Lintao
dc.contributor.authorZhu, Weiguo
dc.contributor.authorYu, Donghong
dc.contributor.authorXiao, Min
dc.contributor.authorMoons, Ellen
dc.contributor.authorZhang, Fujun
dc.contributor.authorAnthopoulos, Thomas D.
dc.contributor.authorInganäs, Olle
dc.contributor.authorWang, Ergang
dc.identifier.citationFan, 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/d0ee01828g
dc.description.abstractObtaining 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 is
dc.description.sponsorshipWe 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).
dc.publisherRoyal Society of Chemistry (RSC)
dc.rightsThis article is open access licensed under a Creative Commons Attribution 3.0 Unported Licence.
dc.titleOver 14% efficiency all-polymer solar cells enabled by a low bandgap polymer acceptor with low energy loss and efficient charge separation
dc.contributor.departmentMaterial Science and Engineering
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentKAUST Solar Center (KSC)
dc.identifier.journalEnergy and Environmental Science
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionDepartment of Chemistry and Chemical Engineering, Chalmers University of Technology Göteborg SE-412 96
dc.contributor.institutionSchool of Chemistry and Chemical Engineering, Beijing Institute of Technology Beijing 100081 China
dc.contributor.institutionBiomolecular and Organic Electronics, Department of Physics, Chemistry and Biology (IFM), Linköping University Linköping SE-581 83
dc.contributor.institutionNational Laboratory of Solid State Microstructures, School of Physics, Collaborative Innovation Center of Advanced Microstructures, Nanjing University Nanjing 210093 China
dc.contributor.institutionDepartment of Physics and Astronomy, Shanghai Jiaotong University Shanghai 200240 China
dc.contributor.institutionGuangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Guangzhou Key Laboratory of Vacuum Coating Technologies and New Energy Materials, Siyuan Laboratory, Department of Physics, Jinan University Guangzhou 510632 China
dc.contributor.institutionDepartment of Engineering and Physics, Karlstad University 65188 Karlstad Sweden
dc.contributor.institutionSchool of Materials Science and Engineering, Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, Jiangsu Engineering Laboratory of Light-Electricity-Heat Energy-Converting Materials and Applications, Changzhou University Changzhou 213164 China
dc.contributor.institutionDepartment of Chemistry and Bioscience, Aalborg University DK-9220 Aalborg Denmark
dc.contributor.institutionSino-Danish Center for Education and Research Aarhus DK-8000
dc.contributor.institutionSchool of Science, Beijing Jiaotong University Beijing 100044 China
dc.contributor.institutionSchool of Materials Science and Engineering, Zhengzhou University Zhengzhou 450001 China
kaust.personLin, Yuanbao
kaust.personAnthopoulos, Thomas D.
kaust.acknowledged.supportUnitOffice of Sponsored Research (OSR)

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