DC Field | Value | Language |
---|---|---|
dc.contributor.author | Zhang, Qiang | - |
dc.contributor.author | Song, Xin | - |
dc.contributor.author | Singh, Ranbir | - |
dc.contributor.author | Chung, Sein | - |
dc.contributor.author | Zhou, Zhongxin | - |
dc.contributor.author | Lu, Yingyi | - |
dc.contributor.author | Zhang, Bin | - |
dc.contributor.author | Cho, Kilwon | - |
dc.contributor.author | Zhu, WeiGuo | - |
dc.contributor.author | Liu, Yu | - |
dc.date.accessioned | 2023-02-27T07:40:57Z | - |
dc.date.available | 2023-02-27T07:40:57Z | - |
dc.date.created | 2022-04-04 | - |
dc.date.issued | 2022-06 | - |
dc.identifier.issn | 1385-8947 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/115790 | - |
dc.description.abstract | © 2022 Elsevier B.V.The simple halogenation strategy of side-chains has been proven an effective approach to boost the photovoltaic performance of organic solar cells (OSCs). Herein, two novel D-A copolymer donors, namely PBDTTS-2FQx and PBDTTS-2ClQx, comprising an alkylthiothiophene benzodithiophene (BDTTS) as donor unit, alkyl substituted thiophene as the π-bridges and an identical molecular framework but alkoxy substituted fluorobenzene (or chlorobenzene) side chains on the quinoxaline (Qx) as acceptor units, are first developed and compared in parallel. The PBDTTS-2ClQx with chlorobenzene side chains on the Qx unit exhibits a distinct redshifted absorption, suppressed energy levels, increased extinction coefficient and electron mobility compared with the counterpart PBDTTS-2FQx bearing fluorobenzene side-chains on the Qx unit. After blended with BTP-eC9 as non-fullerene acceptor (NFA), the blend film of PBDTTS-2ClQx:BTP-eC9 shows higher and balanced hole/electron mobilities, more favorable aggregation, as well as less charge carrier recombination and better molecular order. As a result, the OSCs based on PBDTTS-2ClQx:BTP-eC9 deliver an impressive power conversion efficiency (PCE) of 16.1% with simultaneously increased fundamental parameters, while the PBDTTS-2FQx-based OSCs exhibits only a PCE of 12.2%. The impressive PCE of 16.1% is by far one of the highest values for binary OSCs with the Qx-based copolymer as donors. This work reveals that chlorine side-chain engineering of the Qx-based copolymer donors is a simple and effective approach to further improve their photovoltaic performance. | - |
dc.language | English | - |
dc.publisher | Elsevier B.V. | - |
dc.relation.isPartOf | Chemical Engineering Journal | - |
dc.title | Chloride side-chain engineered quinoxaline-based D-A copolymer enabling non-fullerene organic solar cells with over 16% efficiency | - |
dc.type | Article | - |
dc.identifier.doi | 10.1016/j.cej.2022.135182 | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | Chemical Engineering Journal, v.437 | - |
dc.identifier.wosid | 000779263600003 | - |
dc.citation.title | Chemical Engineering Journal | - |
dc.citation.volume | 437 | - |
dc.contributor.affiliatedAuthor | Cho, Kilwon | - |
dc.identifier.scopusid | 2-s2.0-85125474273 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.type.docType | Article | - |
dc.subject.keywordPlus | OPEN-CIRCUIT VOLTAGE | - |
dc.subject.keywordPlus | CONJUGATED POLYMERS | - |
dc.subject.keywordPlus | CHLORINATION | - |
dc.subject.keywordPlus | 10.5-PERCENT | - |
dc.subject.keywordPlus | ACCEPTORS | - |
dc.subject.keywordPlus | STRATEGY | - |
dc.subject.keywordAuthor | Chlorobenzene side-chains | - |
dc.subject.keywordAuthor | Copolymer donors | - |
dc.subject.keywordAuthor | Fluorobenzene side-chains | - |
dc.subject.keywordAuthor | Organic solar cells | - |
dc.subject.keywordAuthor | Quinoxaline | - |
dc.relation.journalWebOfScienceCategory | Engineering, Environmental | - |
dc.relation.journalWebOfScienceCategory | Engineering, Chemical | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Engineering | - |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
library@postech.ac.kr Tel: 054-279-2548
Copyrights © by 2017 Pohang University of Science ad Technology All right reserved.