DC Field | Value | Language |
---|---|---|
dc.contributor.author | JOO, TAIHA | - |
dc.contributor.author | CHO, KIL WON | - |
dc.contributor.author | SON, JI WON | - |
dc.contributor.author | DONG, HUN SIN | - |
dc.contributor.author | CHANDRAMOULI, KULSHRESHTHA | - |
dc.contributor.author | MOON, BYUNG HO | - |
dc.contributor.author | LEE, JAEWON | - |
dc.contributor.author | KIM, HEUNG GYU | - |
dc.contributor.author | Hwang, Hyeongjin | - |
dc.contributor.author | Sin, Dong Hun | - |
dc.date.accessioned | 2018-01-04T06:50:26Z | - |
dc.date.available | 2018-01-04T06:50:26Z | - |
dc.date.created | 2017-12-05 | - |
dc.date.issued | 2017-06 | - |
dc.identifier.issn | 2050-7488 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/39080 | - |
dc.description.abstract | The synergistic effects of a thiophene-based pi-bridging backbone extension on the intrinsic and photovoltaic properties of electron donor-acceptor (D-A) copolymers were systematically investigated. A series of alternating D-A copolymers (PBTs) based on 4,8-bis(5-ethylhexylselenophen-2-yl)benzo[1,2-b:4,5-b']dithiophene (EHSeBDT) and 5-(2-butyloctyl)-4H-thieno[3,4-c]pyrrole-4,6(5H)-dione (BOTPD), which featured thiophene-based pi-bridges, were synthesized: PBT without a pi-bridge, PBT with a 3-octylthiophene (OT) pi-bridge (PBT-OT), and PBT with a 3-octylthieno[3,2-b]thiophene (OTT) pi-bridge (PBT-OTT). The light absorption and charge transport properties were significantly enhanced upon incorporation of the OTT pi-bridge. The enhancements resulted from the strong pi-pi intermolecular interactions using the OTT pi-bridging backbone extension between neighboring polymer chains. PBT-OTT was most miscible in PC71BM. As a result, the photoactive layers prepared using PBT-OTT and PC71BM formed a well-mixed bulk-heterojunction morphology and yielded organic solar cells (OSCs) with a high power conversion efficiency of 7.21%. Transient absorption analysis suggested that the mu-electrons were further delocalized along the copolymer after incorporation of the OTT pi-bridge, and the charge separation efficiency increased. These results suggested that incorporating OTT pi-bridges into D-A copolymers provides a useful strategy for developing highly efficient OSCs. | - |
dc.language | English | - |
dc.publisher | Royal Society of Chemistry | - |
dc.relation.isPartOf | Journal of Materials Chemistry A | - |
dc.title | Synergistic effects of an alkylthieno 3,2-b thiophene pi-bridging backbone extension on the photovoltaic performances of donor-acceptor copolymers | - |
dc.type | Article | - |
dc.identifier.doi | 10.1039/c7ta02557b | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | Journal of Materials Chemistry A, v.5, pp.10269 - 10279 | - |
dc.identifier.wosid | 000402387900020 | - |
dc.date.tcdate | 2019-02-01 | - |
dc.citation.endPage | 10279 | - |
dc.citation.startPage | 10269 | - |
dc.citation.title | Journal of Materials Chemistry A | - |
dc.citation.volume | 5 | - |
dc.contributor.affiliatedAuthor | JOO, TAIHA | - |
dc.contributor.affiliatedAuthor | CHO, KIL WON | - |
dc.contributor.affiliatedAuthor | SON, JI WON | - |
dc.contributor.affiliatedAuthor | DONG, HUN SIN | - |
dc.contributor.affiliatedAuthor | CHANDRAMOULI, KULSHRESHTHA | - |
dc.contributor.affiliatedAuthor | MOON, BYUNG HO | - |
dc.contributor.affiliatedAuthor | LEE, JAEWON | - |
dc.contributor.affiliatedAuthor | KIM, HEUNG GYU | - |
dc.identifier.scopusid | 2-s2.0-85021639859 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.wostc | 8 | - |
dc.description.isOpenAccess | N | - |
dc.type.docType | ARTICLE | - |
dc.subject.keywordPlus | POLYMER SOLAR-CELLS | - |
dc.subject.keywordPlus | POWER CONVERSION EFFICIENCY | - |
dc.subject.keywordPlus | THIN-FILM TRANSISTORS | - |
dc.subject.keywordPlus | OPEN-CIRCUIT VOLTAGES | - |
dc.subject.keywordPlus | SIDE-CHAINS | - |
dc.subject.keywordPlus | CONJUGATED POLYMER | - |
dc.subject.keywordPlus | MORPHOLOGY CONTROL | - |
dc.subject.keywordPlus | CHARGE SEPARATION | - |
dc.subject.keywordPlus | ADDITIVES | - |
dc.subject.keywordPlus | DEVICES | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Energy & Fuels | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Energy & Fuels | - |
dc.relation.journalResearchArea | Materials Science | - |
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