Triphenylamine-based organic sensitizers with pi-spacer structural engineering for dye -sensitized solar cells: Synthesis, theoretical calculations, molecular spectroscopy and structure-property-performance relationships
DC Field | Value | Language |
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dc.contributor.author | Eom, Yu Kyung | - |
dc.contributor.author | Hong, Ji Yeoun | - |
dc.contributor.author | Kim, Jeongho | - |
dc.contributor.author | Kim, Hwan Kyu | - |
dc.date.accessioned | 2021-09-03T11:26:41Z | - |
dc.date.available | 2021-09-03T11:26:41Z | - |
dc.date.created | 2021-06-16 | - |
dc.date.issued | 2017-01 | - |
dc.identifier.issn | 0143-7208 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/85035 | - |
dc.description.abstract | The heteroaromatic units play a key role in the D-pi-A organic sensitizers for dye-sensitized solar cells (DSSCs), not only as pi-spacers for tuning the optical properties and energy levels, but also as pi-bridges for efficient electron transfer from donor to acceptor unit. The enhancement of pi-spacer donating and accepting abilities is one of essential requirements to improve the molar absorption coefficient and red shift the absorption band in the D-pi-A organic sensitizer, which is beneficial to light harvesting ability. In this study, the effect of pi-spacers in the triphenylamine (TPA)-based sensitizers, such as phenyl, pyridine, thiophene, thienothiophene and benzothiadiazole-thiophene, on photovoltaic performances was systematically investigated. Time-dependent density functional theoretical calculations were also performed to unravel the nature of the absorption induced electronic excitations. Lippert-Mataga analysis shows the characteristics of intramolecular charge transfer on the change of dipole moment to provide a further understanding of charge separation in the organic sensitizer. As the electron richness of pi-spacer is increased, the absorption band and photocurrent density are enhanced in the order of the pi-spacer capability. The DSSC based on TPA-based sensitizer containing thienothiophene exhibits the better power conversion efficiency of 7.40%, J(sc) of 1438 mA cm(-2), V-oc of 694 mV and fill factor of 0.74. These established structure-property-performance relationships give the deep insight on the impact of various pi-spacers in organic sensitizers on device performances and can give molecular design criteria on D-pi-A structured organic sensitizers for high efficiency DSSCs. (C) 2016 Elsevier Ltd. All rights reserved. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER SCI LTD | - |
dc.subject | BAND-GAP CHROMOPHORES | - |
dc.subject | PORPHYRIN DYES | - |
dc.subject | DERIVATIVES | - |
dc.subject | THIOPHENE | - |
dc.subject | LINKERS | - |
dc.subject | BRIDGES | - |
dc.title | Triphenylamine-based organic sensitizers with pi-spacer structural engineering for dye -sensitized solar cells: Synthesis, theoretical calculations, molecular spectroscopy and structure-property-performance relationships | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kim, Hwan Kyu | - |
dc.identifier.doi | 10.1016/j.dyepig.2016.09.007 | - |
dc.identifier.scopusid | 2-s2.0-84986321375 | - |
dc.identifier.wosid | 000387837200059 | - |
dc.identifier.bibliographicCitation | DYES AND PIGMENTS, v.136, pp.496 - 504 | - |
dc.relation.isPartOf | DYES AND PIGMENTS | - |
dc.citation.title | DYES AND PIGMENTS | - |
dc.citation.volume | 136 | - |
dc.citation.startPage | 496 | - |
dc.citation.endPage | 504 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Applied | - |
dc.relation.journalWebOfScienceCategory | Engineering, Chemical | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Textiles | - |
dc.subject.keywordPlus | BAND-GAP CHROMOPHORES | - |
dc.subject.keywordPlus | PORPHYRIN DYES | - |
dc.subject.keywordPlus | DERIVATIVES | - |
dc.subject.keywordPlus | THIOPHENE | - |
dc.subject.keywordPlus | LINKERS | - |
dc.subject.keywordPlus | BRIDGES | - |
dc.subject.keywordAuthor | pi-Spacers | - |
dc.subject.keywordAuthor | Triphenylamine | - |
dc.subject.keywordAuthor | Electron transfer | - |
dc.subject.keywordAuthor | Intramolecular charge transfer | - |
dc.subject.keywordAuthor | Structure-property-performance relationships | - |
dc.subject.keywordAuthor | Dye-sensitized solar cells | - |
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