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DC Field | Value | Language |
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dc.citation.endPage | 5719 | - |
dc.citation.number | 9 | - |
dc.citation.startPage | 5711 | - |
dc.citation.title | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.citation.volume | 9 | - |
dc.contributor.author | Huang, Xuexiang | - |
dc.contributor.author | Oh, Jiyeon | - |
dc.contributor.author | Cheng, Yujun | - |
dc.contributor.author | Huang, Bin | - |
dc.contributor.author | Ding, Shanshan | - |
dc.contributor.author | He, Qiannan | - |
dc.contributor.author | Wu, FeiYan | - |
dc.contributor.author | Yang, Changduk | - |
dc.contributor.author | Chen, Lie | - |
dc.contributor.author | Chen, Yiwang | - |
dc.date.accessioned | 2023-12-21T16:09:44Z | - |
dc.date.available | 2023-12-21T16:09:44Z | - |
dc.date.created | 2021-04-20 | - |
dc.date.issued | 2021-03 | - |
dc.description.abstract | Most semitransparent organic solar cells (ST-OSCs) show a low open-circuit voltage (V-OC) because of the inherent narrow band-gap of the active layer materials, which is proven to be a key limitation for the improvement of the device performance. To obtain a high V-OC, wide-band gap polymer donors, such as PM6 are often selected for ST-OSCs, but the absorption in the visible light region of such wide-band gap polymer donors is not conducive to the transparency of the devices. Therefore, rational design of active materials to improve the V-OC and device efficiency without sacrificing transparency is critical to realize ST-OSCs for practical applications. Herein, we propose a new design concept of combination of donors and acceptors with low energy levels and overlapping near-infrared absorption for high performance ST-OSCs. We incorporate chlorine, sulfur and fluorine functional atoms into the polymer PCE10 to down-shift the energy levels of the resulting polymer donors, namely PCE10-2Cl, PCE10-SF and PCE10-2F, respectively. All these functionalized polymer donors show lower energy levels than PCE10, ensuring a significantly higher V-OC. Especially, the narrow band-gap PCE10-2Cl having overlapping absorption with the non-fullerene acceptor IT-4F not only obtains a remarkably improved V-OC, but also achieves a comparable photocurrent to the blends with complementary absorption. Subsequently, the PCE10-2Cl:IT-4F-based device delivers a champion power conversion efficiency (PCE) of 10.72% among the functionalized PCE10-based devices. For the ST-OSC device with PCE10-2Cl:IT-4F, a PCE of 8.25% with an average visible transmittance (AVT) of 33% is achieved without any extra treatment, which is an outstanding performance of ST-OSCs with an AVT of over 30%. These results indicate that a rational combination of narrow band-gap donors and acceptors with overlapping absorption is a promising strategy to fabricate high performance ST-OSCs. | - |
dc.identifier.bibliographicCitation | JOURNAL OF MATERIALS CHEMISTRY A, v.9, no.9, pp.5711 - 5719 | - |
dc.identifier.doi | 10.1039/d0ta11203h | - |
dc.identifier.issn | 2050-7488 | - |
dc.identifier.scopusid | 2-s2.0-85102251471 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/52743 | - |
dc.identifier.url | https://pubs.rsc.org/en/content/articlelanding/2021/TA/D0TA11203H#!divAbstract | - |
dc.identifier.wosid | 000627067700034 | - |
dc.language | 영어 | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.title | Narrow band-gap materials with overlapping absorption simultaneously increase the open circuit voltage and average visible transmittance of semitransparent organic solar cells | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary | - |
dc.relation.journalResearchArea | Chemistry; Energy & Fuels; Materials Science | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | SMALL-MOLECULE ACCEPTOR | - |
dc.subject.keywordPlus | ELECTRON-ACCEPTORS | - |
dc.subject.keywordPlus | POLYMER | - |
dc.subject.keywordPlus | EFFICIENCY | - |
dc.subject.keywordPlus | DESIGN | - |
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