Fine-Tuning Semiconducting Polymer Self-Aggregation and Crystallinity Enables Optimal Morphology and High-Performance Printed All-Polymer Solar Cells

Journal of the American Chemical Society, Journal Year: 2019, Volume and Issue: 142(1), P. 392 - 406

Published: Dec. 3, 2019

Polymer aggregation and crystallization behavior play a crucial role in the performance of all-polymer solar cells (all-PSCs). Gaining control over polymer self-assembly via molecular design to influence bulk-heterojunction active-layer morphology, however, remains challenging. Herein, we show simple yet effective way modulate self-aggregation commonly used naphthalene diimide (NDI)-based acceptor (N2200), by systematically replacing certain amount alkyl side-chains with compact bulky (CBS). Specifically, have synthesized series random copolymer (PNDI-CBSx) different molar fractions (x = 0-1) CBS units found that both solution-phase solid-state crystallinity these polymers are progressively suppressed increasing x as evidenced UV-vis absorption, photoluminescence (PL) spectroscopies, thermal analysis, grazing incidence X-ray scattering (GIWAXS) techniques. Importantly, compared highly self-aggregating N2200, photovoltaic results blending more amorphous donor (PBDB-T) can enable all-PSCs significantly increased PCE (up 8.5%). The higher short-circuit current density (Jsc) from smaller phase-separation domain sizes PL quenching resonant soft (R-SoXS) analyses. Additionally, lower active layer is less sensitive film deposition methods. Thus, transition spin-coating solution coating be easily achieved no losses. On other hand, decreasing too much reduces increases. appear induce formation larger crystallites. These highlight importance balanced strength between achieve high-performance optimal morphology.

Language: Английский

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Recent advances in molecular design of functional conjugated polymers for high-performance polymer solar cells

Progress in Polymer Science, Journal Year: 2019, Volume and Issue: 99, P. 101175 - 101175

Published: Oct. 27, 2019

Language: Английский

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A Universal Fluorinated Polymer Acceptor Enables All-Polymer Solar Cells with >15% Efficiency

ACS Energy Letters, Journal Year: 2020, Volume and Issue: 5(12), P. 3702 - 3707

Published: Nov. 12, 2020

While great progress has been achieved in all-polymer solar cells (all-PSCs), the efficiency of all-PSCs is primarily limited by polymer acceptors that lack a high extinction coefficient, electron mobility, and good compatibility with donors. Here we designed developed acceptor PFA1 based on non-fullerene framework fluorine substituent 1,1-dicyanomethylene-3-indanone unit. In combination an electron-donating polymer, PTzBI-oF, blend film presents extended intensified absorption profile, enhanced favorable morphology. The optimized exhibit remarkably 15.11%, which is, to best our knowledge, highest performance yet reported for all-PSC. Of particular importance applicability as universal range donors achieve impressively efficiencies. These properties enable new molecular design strategy construction toward applications high-performance all-PSCs.

Language: Английский

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Challenges and recent advances in photodiodes-based organic photodetectors

Materials Today, Journal Year: 2021, Volume and Issue: 51, P. 475 - 503

Published: Sept. 11, 2021

Language: Английский

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Organic Solar Cells: Recent Progress and Challenges

ACS Energy Letters, Journal Year: 2019, Volume and Issue: 4(10), P. 2537 - 2539

Published: Oct. 11, 2019

ADVERTISEMENT RETURN TO ISSUEEditorialNEXTOrganic Solar Cells: Recent Progress and ChallengesLin X. ChenLin ChenProfessor of Chemistry, Northwestern University, Evanston, Illinois 60208, United StatesSenior Scientist, Argonne National Laboratory, Lemont, 60439, StatesMore by Lin Chenhttp://orcid.org/0000-0002-8450-6687Cite this: ACS Energy Lett. 2019, 4, 10, 2537–2539Publication Date (Web):October 11, 2019Publication History Published online11 October 2019Published inissue 11 2019https://pubs.acs.org/doi/10.1021/acsenergylett.9b02071https://doi.org/10.1021/acsenergylett.9b02071editorialACS PublicationsCopyright © 2019 American Chemical Society. This publication is available under these Terms Use. Request reuse permissions free to access through this site. Learn MoreArticle Views18352Altmetric-Citations106LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum full text article downloads since November 2008 (both PDF HTML) across all institutions individuals. These metrics regularly updated reflect usage leading up last few days.Citations number other articles citing article, calculated Crossref daily. Find more information about citation counts.The Altmetric Attention Score a quantitative measure attention that research has received online. Clicking on donut icon will load page at altmetric.com with additional details score social media presence for given article. how calculated. Share Add toView InAdd Full Text ReferenceAdd Description ExportRISCitationCitation abstractCitation referencesMore Options onFacebookTwitterWechatLinked InRedditEmail (2 MB) Get e-AlertscloseSUBJECTS:Excitons,Materials,Polymers,Solar cells,Solar energy e-Alerts

Language: Английский

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