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DC Field | Value | Language |
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dc.citation.endPage | 3261 | - |
dc.citation.number | 7 | - |
dc.citation.startPage | 3254 | - |
dc.citation.title | CHEMISTRY OF MATERIALS | - |
dc.citation.volume | 32 | - |
dc.contributor.author | Sun, Chenkai | - |
dc.contributor.author | Pan, Fei | - |
dc.contributor.author | Qiu, Beibei | - |
dc.contributor.author | Qin, Shucheng | - |
dc.contributor.author | Chen, Shanshan | - |
dc.contributor.author | Shang, Ziya | - |
dc.contributor.author | Meng, Lei | - |
dc.contributor.author | Yang, Changduk | - |
dc.contributor.author | Li, Yongfang | - |
dc.date.accessioned | 2023-12-21T17:42:02Z | - |
dc.date.available | 2023-12-21T17:42:02Z | - |
dc.date.created | 2020-05-13 | - |
dc.date.issued | 2020-04 | - |
dc.description.abstract | Molecular frontier orbital energy level and aggregation behavior regulation of polymer donors are feasible ways to improve the photovoltaic performance of polymer solar cells (PSCs). Here, we design and synthesize a new D-A copolymer donor PBQ10 based on bithienyl benzodithiophene D-unit and monoalkoxy-substituted bifluoroquinoxaline A-unit, which shows an obviously downshifted highest occupied molecular orbital energy level in comparison with the control polymer PBQ7 with a dialkoxyphenyl substituent on the bifluoroquinoxa-line A-unit. Moreover, PBQ10 exhibits more preferential face-on molecular orientation and tighter pi-pi stacking in the vertical direction of the substrate than PBQ7, which significantly improves the hole mobility of PBQ10 to 5.22 X 10(-4) cm(2) V-1 s(-1) in comparison with that (1.71 x 10(-4) cm(2) s(-1)) of PBQ7. As a result, the PBQ10-based PSC with Y6 as the acceptor demonstrates an impressive power conversion efficiency (PCE) of 16.34% with simultaneously increased open-circuit voltage and fill factor, which is significantly increased compared with the PBQ7-based PSC with a PCE of 13.45% and is one of the highest PCEs in binary PSCs. The result suggests that rational side-chain optimization of the polymer donor is an efficient way to regulate the molecular energy level and self-assembly feature and thus to improve the PCE of PSCs. | - |
dc.identifier.bibliographicCitation | CHEMISTRY OF MATERIALS, v.32, no.7, pp.3254 - 3261 | - |
dc.identifier.doi | 10.1021/acs.chemmater.0c00459 | - |
dc.identifier.issn | 0897-4756 | - |
dc.identifier.scopusid | 2-s2.0-85084397547 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/32071 | - |
dc.identifier.url | https://pubs.acs.org/doi/10.1021/acs.chemmater.0c00459 | - |
dc.identifier.wosid | 000526394000054 | - |
dc.language | 영어 | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | D-A Copolymer Donor Based on Bithienyl Benzodithiophene D-Unit and Monoalkoxy Bifluoroquinoxaline A-Unit for High-Performance Polymer Solar Cells | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical; Materials Science, Multidisciplinary | - |
dc.relation.journalResearchArea | Chemistry; Materials Science | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | PHOTOVOLTAIC CELLS | - |
dc.subject.keywordPlus | ELECTRON-ACCEPTOR | - |
dc.subject.keywordPlus | MOLECULAR DESIGN | - |
dc.subject.keywordPlus | EFFICIENCY | - |
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