Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/106684
DC Field | Value | Language |
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dc.contributor | Department of Electrical and Electronic Engineering | - |
dc.contributor | Department of Applied Physics | - |
dc.creator | Gao, W | - |
dc.creator | Ma, R | - |
dc.creator | Zhu, L | - |
dc.creator | Li, L | - |
dc.creator | Lin, FR | - |
dc.creator | Dela Peña, TA | - |
dc.creator | Wu, J | - |
dc.creator | Li, M | - |
dc.creator | Zhong, W | - |
dc.creator | Wu, X | - |
dc.creator | Fink, Z | - |
dc.creator | Tian, C | - |
dc.creator | Liu, F | - |
dc.creator | Wei, Z | - |
dc.creator | Jen, AKY | - |
dc.creator | Li, G | - |
dc.date.accessioned | 2024-06-03T02:10:10Z | - |
dc.date.available | 2024-06-03T02:10:10Z | - |
dc.identifier.issn | 1614-6832 | - |
dc.identifier.uri | http://hdl.handle.net/10397/106684 | - |
dc.language.iso | en | en_US |
dc.publisher | Wiley-VCH Verlag GmbH & Co. KGaA | en_US |
dc.rights | © 2024 The Authors. Advanced Energy Materials published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits use, distribution and reproduction in any medium, provided the original work is properly cited. | en_US |
dc.rights | The following publication W. Gao, R. Ma, L. Zhu, L. Li, F. R. Lin, T. A. Dela Peña, J. Wu, M. Li, W. Zhong, X. Wu, Z. Fink, C. Tian, F. Liu, Z. Wei, A. K. Jen, G. Li, 3D Crystal Framework Regulation Enables Se-Functionalized Small Molecule Acceptors Achieve Over 19% Efficiency. Adv. Energy Mater. 2024, 14, 2304477 is available at https://doi.org/10.1002/aenm.202304477. | en_US |
dc.subject | Organic solar cells | en_US |
dc.subject | Selenium-functionalization | en_US |
dc.subject | Single-crystal | en_US |
dc.subject | Small molecule acceptor | en_US |
dc.title | 3D crystal framework regulation enables se-functionalized small molecule acceptors achieve over 19% efficiency | en_US |
dc.type | Journal/Magazine Article | en_US |
dc.identifier.volume | 14 | - |
dc.identifier.issue | 19 | - |
dc.identifier.doi | 10.1002/aenm.202304477 | - |
dcterms.abstract | Se-functionalized small molecule acceptors (SMAs) exhibit unique advantages in constructing materials with near-infrared absorption, but their photovoltaic performance lags behind that of S-containing analogs in organic solar cells (OSCs). Herein, two new Se-containing SMAs, namely Se-EH and Se-EHp, are designed and synthesized by regulating bifurcation site of outer alkyl chain, which enables Se-EH and Se-EHp to form different 3D crystal frameworks from CH1007. Se-EH displays tighter π–π stacking and denser packing framework with smaller-sized pore structure induced by larger steric hindrance effect of outer alkyl chain branched at 2-position, and a higher dielectric constant of PM6:Se-EH active layer can be obtained. OSCs based on PM6:Se-EH achieved very high PCEs of 18.58% in binary and 19.03% in ternary devices with a high FF approaching 80% for Se-containing SMAs. A more significant alkyl chain steric hindrance effect in Se-EH adjusts the molecular crystallization to form a favorable nanofiber interpenetrating network with an appropriate domain size to reduce rate of sub-ns recombination and promote balanced transport of carriers. This work provides references for further design and development of highly efficient Se-functionalized SMAs. | - |
dcterms.accessRights | Open access | en_US |
dcterms.bibliographicCitation | Advanced energy materials, 17 May 2024, v. 14, no. 19, 2304477 | - |
dcterms.isPartOf | Advanced energy materials | - |
dcterms.issued | 2024-05 | - |
dc.identifier.scopus | 2-s2.0-85187107173 | - |
dc.identifier.eissn | 1614-6840 | - |
dc.identifier.artn | 2304477 | - |
dc.description.validate | 202405 bcch | - |
dc.description.oa | Version of Record | en_US |
dc.identifier.FolderNumber | OA_TA | en_US |
dc.description.fundingSource | RGC | en_US |
dc.description.fundingSource | Others | en_US |
dc.description.fundingText | National Natural Science Foundation of China; Shenzhen Science and Technology Innovation Commission; Hong Kong Polytechnic University Internal Research Funds: Sir Sze-yuen Chung Endowed Professorship Fund; Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices; PolyU Distinguished Postdoctoral Fellowship | en_US |
dc.description.pubStatus | Published | en_US |
dc.description.TA | Wiley (2024) | en_US |
dc.description.oaCategory | TA | en_US |
Appears in Collections: | Journal/Magazine Article |
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File | Description | Size | Format | |
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Gao_3D_Crystal_Framework.pdf | 3.95 MB | Adobe PDF | View/Open |
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