Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/95461
DC Field | Value | Language |
---|---|---|
dc.contributor | Department of Applied Biology and Chemical Technology | en_US |
dc.creator | Wu, J | en_US |
dc.creator | Liu, Q | en_US |
dc.creator | Ye, L | en_US |
dc.creator | Guo, X | en_US |
dc.creator | Fan, Q | en_US |
dc.creator | Lv, J | en_US |
dc.creator | Zhang, M | en_US |
dc.creator | Wong, WY | en_US |
dc.date.accessioned | 2022-09-19T02:22:07Z | - |
dc.date.available | 2022-09-19T02:22:07Z | - |
dc.identifier.issn | 0887-0624 | en_US |
dc.identifier.uri | http://hdl.handle.net/10397/95461 | - |
dc.language.iso | en | en_US |
dc.publisher | American Chemical Society | en_US |
dc.rights | © 2021 American Chemical Society | en_US |
dc.rights | This document is the Accepted Manuscript version of a Published Work that appeared in final form in Energy & Fuels, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acs.energyfuels.1c02470. | en_US |
dc.title | New electron acceptor with end-extended conjugation for high-performance polymer solar cells | en_US |
dc.type | Journal/Magazine Article | en_US |
dc.description.otherinformation | Title on author's file: A New Electron Acceptor with End-Extended Conjugation for High Performance Polymer Solar Cells | en_US |
dc.identifier.spage | 19061 | en_US |
dc.identifier.epage | 19068 | en_US |
dc.identifier.volume | 35 | en_US |
dc.identifier.issue | 23 | en_US |
dc.identifier.doi | 10.1021/acs.energyfuels.1c02470 | en_US |
dcterms.abstract | To develop high-efficiency polymer solar cells (PSCs), the acceptors in a bulk heterojunction (BHJ) blend are supposed to possess complementary absorption bands in the near-infrared region and a suitable energy level to be well-matched with the donors. In this work, a new small molecular acceptor (SMA) named IDTT8-N based on an indacenodithienothiophene (IDTT) core was designed and synthesized. In comparison to the counterpart molecule IDTN with an indacenodithiophene (IDT) core, IDTT8-N with the extended π-conjugation length of an IDT core not only exhibits a red shift of ca. 35 nm in optical absorption but also has little change on its lowest unoccupied molecular orbital (LUMO) energy level. Therefore, PSCs based on PM6:IDTT8-N exhibit a superior short-circuit current density (Jsc) and high open-circuit voltage (Voc). Moreover, apart from the strong face-on molecular stacking, distinct end-group π-πstacking of IDTT8-N can be observed in the blends, facilitating the charge transport. Therefore, the optimized PM6:IDTT8-N-based devices exhibit dramatically high and balanced electron mobility (μe) and hole mobility (μh), whose magnitudes are over 10-3 cm2 V-1 s-1. Consequently, an extraordinary PCE of 14.1% with a relatively high Jsc of 20.98 mA cm-2 and a Voc of 0.94 V was recorded. To our knowledge, it is the new record among PSCs with a SMA based on 2-(3-oxocyclopentylidene)malononitrile (INCN) as end groups. These results indicate that extending the π-conjugation length of the fused ring core of a SMA is an efficient method to both enhance the absorption and the molecular interaction of the acceptor as well as the photovoltaic performance of PSCs. | en_US |
dcterms.accessRights | open access | en_US |
dcterms.bibliographicCitation | Energy & fuels, 2 Dec. 2021, v. 35, no. 23, p. 19061-19068 | en_US |
dcterms.isPartOf | Energy & fuels | en_US |
dcterms.issued | 2021-12-02 | - |
dc.identifier.scopus | 2-s2.0-85117088260 | - |
dc.identifier.eissn | 1520-5029 | en_US |
dc.description.validate | 202209 bcww | en_US |
dc.description.oa | Accepted Manuscript | en_US |
dc.identifier.FolderNumber | ABCT-0010 | - |
dc.description.fundingSource | RGC | en_US |
dc.description.fundingSource | Others | en_US |
dc.description.fundingText | Jiangsu Provincial Natural Science Foundation; Priority Academic Program Development of Jiangsu Higher Education Institutions, and the Collaborative Innovation Center of Suzhou Nano Science Technology; Research Institute for Smart Energy; The Hong Kong Polytechnic University; Endowed Professorship in Energy from Clarea Au; China Scholarship Council Studentship at Aalborg University | en_US |
dc.description.pubStatus | Published | en_US |
dc.identifier.OPUS | 60046040 | - |
dc.description.oaCategory | Green (AAM) | en_US |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
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Guo_New_Electron_Acceptor.pdf | Pre-Published version | 779.86 kB | Adobe PDF | View/Open |
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