Using Two Compatible Donor Polymers Boosts the Efficiency of Ternary Organic Solar Cells to 17.7%
Jeong, Sang Young
Woo, Han Young
Anthopoulos, Thomas D.
KAUST DepartmentMaterial Science and Engineering
Physical Science and Engineering (PSE) Division
Material Science and Engineering Program
KAUST Solar Center (KSC)
Online Publication Date2021-09-08
Print Publication Date2021-09-28
Embargo End Date2022-09-07
Permanent link to this recordhttp://hdl.handle.net/10754/671138
MetadataShow full item record
AbstractThe use of ternary organic semiconducting blends is recognized as an effective strategy to boost the performance of polymer solar cells (PSCs) by increasing the photocurrent while minimizing voltage losses. Yet, the scarcity of suitable donors with a deep highest occupied molecular orbital (HOMO) level poses a challenge in extending this strategy to ternary systems based on two polymers. Here, we address this challenge by the synthesis of a new donor polymer (PM7-Si), which is akin to the well-known PM6 but has a deeper HOMO level. PM7-Si is utilized as the third component to enhance the performance of the best-in-class binary system of PM6:BTP-eC9, leading to simultaneous improvements in the efficiency (17.7%), open-circuit voltage (0.864 V), and fill factor (77.6%). These decisively enhanced features are attributed to the efficient carrier transport, improved stacking order, and morphology. Our results highlight the use of two polymer donors as a promising strategy toward high-performance ternary PSCs.
CitationPeng, W., Lin, Y., Jeong, S. Y., Firdaus, Y., Genene, Z., Nikitaras, A., … Wang, E. (2021). Using Two Compatible Donor Polymers Boosts the Efficiency of Ternary Organic Solar Cells to 17.7%. Chemistry of Materials. doi:10.1021/acs.chemmater.1c01433
SponsorsThe authors thank the Swedish Research Council (2016-06146, 2019-04683), the Swedish Research Council Formas, and the Knut and Alice Wallenberg Foundation (2017.0186, 2016.0059) for financial support. This work was also supported by the National Natural Science Foundation of China (51673031, 51573154), the Major Program of the Natural Science Research of Jiangsu Higher Education Institutions (18KJA480001), the Top-notch Academic Programs Project (TAPP) for Polymeric Materials Science and Engineering & the Priority Academic Program Development (PAPD) of Jiangsu Higher Education Institutions, the Jiangsu Provincial Talents Project of High-Level Innovation and Entrepreneurship, and the Foundation of State Key Laboratory of Polymer Materials Engineering (sklpme2017-2-04). W.P. acknowledges the support by the China Scholarship Council and Y.L., A.N., L.T., and T.D.A. acknowledge the support by the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under Award No: OSR-2018-CARF/CCF-3079 and No: OSR-2019-CRG8-4095.3. A.N. and L.T. acknowledge support for the computational time granted from GRNET in the National HPC facility—ARIS—under project 9016-CREAM. H.Y.W acknowledges the financial support from the National Research Foundation (NRF) of Korea (2019R1A6A1A11044070).
PublisherAmerican Chemical Society (ACS)
JournalChemistry of Materials
Except where otherwise noted, this item's license is described as This document is the Accepted Manuscript version of a Published Work that appeared in final form in Chemistry of Materials, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/doi/10.1021/acs.chemmater.1c01433.