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DC Field | Value | Language |
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dc.citation.endPage | 12318 | - |
dc.citation.number | 31 | - |
dc.citation.startPage | 12308 | - |
dc.citation.title | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.citation.volume | 4 | - |
dc.contributor.author | Hadmojo, Wisnu Tantyo | - |
dc.contributor.author | Nam, So Youn | - |
dc.contributor.author | Shin, Tae Joo | - |
dc.contributor.author | Yoon, Sung Cheol | - |
dc.contributor.author | Jang, Sung-Yeon | - |
dc.contributor.author | Jung, Im Hwan | - |
dc.date.accessioned | 2023-12-21T23:19:08Z | - |
dc.date.available | 2023-12-21T23:19:08Z | - |
dc.date.created | 2016-08-23 | - |
dc.date.issued | 2016-08 | - |
dc.description.abstract | Organic small molecule (SM) acceptors containing a perylene diimide (PDI) moiety, F2B-T2PDI and T2PDI are synthesized, and the effects of their molecular geometry on the performance of fullerene-free organic photovoltaic (OPV) devices are investigated. The SM acceptors possess a PDI-core-PDI structure in which the PDI wing is connected to conjugated core units. By incorporation of a 2,5-difluorobenzene (F2B) moiety within the core unit, the planarity of the conjugated core is enhanced and the energy levels of the SM acceptor are down-shifted. In terms of molecular geometry, the F2B-containing SM acceptor, F2B-T2PDI, has a rigid core, which can symmetrically align the two PDI wings and enhance molecular packing. As a result, improved electron transport and bulk heterojunction morphology of the active layers are achieved. Furthermore, the incorporation of the F2B moiety effectively down-shifts the HOMO energy level, preventing back-transfer of holes from the acceptor to the cathode and enhancing the absorption of complementary wavelengths of the donor polymer, PTB7-Th. Leveraged by the beneficial geometric and energetic effects from the incorporation of F2B units, the power conversion efficiency of fullerene-free OPV devices using F2B-T2PDI reached 5%, whereas that using T2PDI was 3.63%. | - |
dc.identifier.bibliographicCitation | JOURNAL OF MATERIALS CHEMISTRY A, v.4, no.31, pp.12308 - 12318 | - |
dc.identifier.doi | 10.1039/c6ta04344e | - |
dc.identifier.issn | 2050-7488 | - |
dc.identifier.scopusid | 2-s2.0-84982786867 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/20268 | - |
dc.identifier.url | http://pubs.rsc.org/en/Content/ArticleLanding/2016/TA/C6TA04344E#!divAbstract | - |
dc.identifier.wosid | 000382095100038 | - |
dc.language | 영어 | - |
dc.publisher | ROYAL SOC CHEMISTRYROYAL SOC CHEMISTRY | - |
dc.title | Geometrically controlled organic small molecule acceptors for efficient fullerene-free organic photovoltaic devices | - |
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.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | ELECTRON-ACCEPTORS | - |
dc.subject.keywordPlus | CONVERSION EFFICIENCY | - |
dc.subject.keywordPlus | EXCEEDING 10-PERCENT | - |
dc.subject.keywordPlus | ULTIMATE EFFICIENCY | - |
dc.subject.keywordPlus | ENERGY-CONVERSION | - |
dc.subject.keywordPlus | PHASE-SEPARATION | - |
dc.subject.keywordPlus | BANDGAP POLYMER | - |
dc.subject.keywordPlus | POLYMER SOLAR-CELLS | - |
dc.subject.keywordPlus | OPEN-CIRCUIT VOLTAGE | - |
dc.subject.keywordPlus | CONJUGATED POLYMERS | - |
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