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DC Field | Value | Language |
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dc.citation.endPage | 7065 | - |
dc.citation.number | 13 | - |
dc.citation.startPage | 7053 | - |
dc.citation.title | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.citation.volume | 11 | - |
dc.contributor.author | Cho, Hye Won | - |
dc.contributor.author | Jeong, Sang Young | - |
dc.contributor.author | Wu, Ziang | - |
dc.contributor.author | Lim, Hyojin | - |
dc.contributor.author | Park, Won-Woo | - |
dc.contributor.author | Lee, Woo Jin | - |
dc.contributor.author | Krishna, Jonnadula Venkata Suman | - |
dc.contributor.author | Kwon, Oh Hoon | - |
dc.contributor.author | Kim, Jin Young | - |
dc.contributor.author | Woo, Han Young | - |
dc.date.accessioned | 2023-12-21T12:43:39Z | - |
dc.date.available | 2023-12-21T12:43:39Z | - |
dc.date.created | 2023-03-10 | - |
dc.date.issued | 2023-04 | - |
dc.description.abstract | A new benzodithiophene (BDT) building block, 4,8-bis(5-(2-ethylhexyl)-3-fluoro-4-hexylthiophen-2-yl)benzo[1,2-b:4,5-b']dithiophene (3-FBDT), was designed by tailoring the positions and numbers of alkyl and F substituents by adjusting the torsional energy barrier. The incorporation of 3-FBDT into a representative BDT-based polymer donor (PBDB-T-2F) yielded a new photovoltaic copolymer (PBDB-T-2F(3/4)) with a decreased valence band level and considerably improved solubility in non-halogenated and non-aromatic solvents such as tetrahydrofuran (THF). Side-chain engineering has been widely studied to control solution processability in eco-friendly solvents, but the torsional property control of conjugated main chains has rarely been attempted. Although PBDB-T-2F showed a significant drop in power conversion efficiencies (PCEs: 17.46 to 9.73%) owing to serious aggregation caused by replacing chloroform with THF as a processing solvent, a THF-processed PBDB-T-2F(3/4) device maintained a high PCE (14.3 to 13.86%) with little detrimental effect. Charge carrier dynamics and film morphology analyses suggested that the electronic and morphological properties of PBDB-T-2F(3/4) are mainly governed by the majority moiety of the PBDB-T-2F blocks. Owing to its high solubility and outstanding photoelectrical properties, PBDB-T-2F(3/4) was successfully employed to fabricate flexible, semi-transparent, and large-area THF-processed devices. The incorporation of the 3-FBDT building block into various BDT-based photovoltaic polymers can be an effective strategy to improve the solution processability and broaden the solvent selection for fabricating eco-friendly solar cells without significantly disrupting their photoelectrical properties. | - |
dc.identifier.bibliographicCitation | JOURNAL OF MATERIALS CHEMISTRY A, v.11, no.13, pp.7053 - 7065 | - |
dc.identifier.doi | 10.1039/d2ta10030d | - |
dc.identifier.issn | 2050-7488 | - |
dc.identifier.scopusid | 2-s2.0-85151032926 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/62316 | - |
dc.identifier.wosid | 000948974900001 | - |
dc.language | 영어 | - |
dc.publisher | Royal Society of Chemistry | - |
dc.title | A newly designed benzodithiophene building block: tuning of torsional barrier for non-halogenated and non-aromatic solvent-processible photovoltaic polymers | - |
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 | POWER CONVERSION EFFICIENCY | - |
dc.subject.keywordPlus | ENERGY-LEVEL MODULATION | - |
dc.subject.keywordPlus | SOLAR-CELLS | - |
dc.subject.keywordPlus | CONJUGATED POLYMER | - |
dc.subject.keywordPlus | FULLERENE | - |
dc.subject.keywordPlus | OPTIMIZATION | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | MORPHOLOGY | - |
dc.subject.keywordPlus | ENABLES | - |
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