Subtle Polymer Donor and Molecular Acceptor Design Enable Efficient Polymer Solar Cells with a Very Small Energy Loss
DC Field | Value | Language |
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dc.contributor.author | Xu, Xiaopeng | - |
dc.contributor.author | Feng, Kui | - |
dc.contributor.author | Lee, Young Woong | - |
dc.contributor.author | Woo, Han Young | - |
dc.contributor.author | Zhang, Guangjun | - |
dc.contributor.author | Peng, Qiang | - |
dc.date.accessioned | 2021-08-31T11:40:42Z | - |
dc.date.available | 2021-08-31T11:40:42Z | - |
dc.date.created | 2021-06-18 | - |
dc.date.issued | 2020-02 | - |
dc.identifier.issn | 1616-301X | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/57904 | - |
dc.description.abstract | A new wide bandgap polymer donor, PNDT-ST, based on naphtho[2,3-b:6,7-b ']dithiophene (NDT) and 1,3-bis(thiophen-2-yl)-5,7-bis(2- ethylhexyl)benzo[1,2-c:4,5-c ']dithiophene-4,8-dione (BDD) is developed for efficient nonfullerene polymer solar cells. To better match the energy levels, a new near infrared small molecule of Y6-T is also developed. The extended pi-conjugation and less twist of PNDT-ST provides it with higher crystallinity and stronger aggregation than the PBDT-ST counterpart. The higher lowest occupied molecular orbital level of Y6-T than Y6 favors the better energy level match with these polymers, resulting in improved open circuit voltage (V-oc) and power conversion efficiency (PCE). The high crystallinity and strong aggregation of PNDT-ST also induces large phase separation with poorer morphology, leading to lower fill factor and reduced PCE than PBDT-ST. To mediate the crystallinity and optimize the morphology, PNDT-ST and PBDT-ST are blended together with Y6-T, forming the ternary blend devices. As expected, the two compatible polymers allow continual optimization of the morphology by varying the blend ratio. The optimized ternary blend devices deliver a champion PCE as high as 16.57% with a very small energy loss (E-loss) of 0.521 eV. Such small E-loss is the best record for polymer solar cells with PCEs over 16% to date. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.subject | CONJUGATED POLYMER | - |
dc.subject | ELECTRON-ACCEPTOR | - |
dc.subject | SIDE-CHAINS | - |
dc.subject | PERFORMANCE | - |
dc.subject | NAPHTHODITHIOPHENE | - |
dc.subject | BENZODITHIOPHENE | - |
dc.subject | MORPHOLOGY | - |
dc.subject | COPOLYMER | - |
dc.subject | STRATEGY | - |
dc.title | Subtle Polymer Donor and Molecular Acceptor Design Enable Efficient Polymer Solar Cells with a Very Small Energy Loss | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Woo, Han Young | - |
dc.identifier.doi | 10.1002/adfm.201907570 | - |
dc.identifier.scopusid | 2-s2.0-85078598153 | - |
dc.identifier.wosid | 000505299100001 | - |
dc.identifier.bibliographicCitation | ADVANCED FUNCTIONAL MATERIALS, v.30, no.9 | - |
dc.relation.isPartOf | ADVANCED FUNCTIONAL MATERIALS | - |
dc.citation.title | ADVANCED FUNCTIONAL MATERIALS | - |
dc.citation.volume | 30 | - |
dc.citation.number | 9 | - |
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 | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
dc.relation.journalWebOfScienceCategory | Physics, Condensed Matter | - |
dc.subject.keywordPlus | CONJUGATED POLYMER | - |
dc.subject.keywordPlus | ELECTRON-ACCEPTOR | - |
dc.subject.keywordPlus | SIDE-CHAINS | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | NAPHTHODITHIOPHENE | - |
dc.subject.keywordPlus | BENZODITHIOPHENE | - |
dc.subject.keywordPlus | MORPHOLOGY | - |
dc.subject.keywordPlus | COPOLYMER | - |
dc.subject.keywordPlus | STRATEGY | - |
dc.subject.keywordAuthor | energy loss | - |
dc.subject.keywordAuthor | nonfullerene acceptors | - |
dc.subject.keywordAuthor | polymer solar cells | - |
dc.subject.keywordAuthor | ternary blends | - |
dc.subject.keywordAuthor | wide bandgap polymer donors | - |
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