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DC Field | Value | Language |
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dc.citation.endPage | 16002 | - |
dc.citation.number | 29 | - |
dc.citation.startPage | 15995 | - |
dc.citation.title | ACS APPLIED MATERIALS & INTERFACES | - |
dc.citation.volume | 7 | - |
dc.contributor.author | Nam, Sungho | - |
dc.contributor.author | Woo, Sungho | - |
dc.contributor.author | Seo, Jooyeok | - |
dc.contributor.author | Kim, Wook Hyun | - |
dc.contributor.author | Kim, Hwajeong | - |
dc.contributor.author | McNeill, Christopher R. | - |
dc.contributor.author | Shin, Tae Joo | - |
dc.contributor.author | Bradley, Donal D. C. | - |
dc.contributor.author | Kim, Youngkyoo | - |
dc.date.accessioned | 2023-12-22T01:07:15Z | - |
dc.date.available | 2023-12-22T01:07:15Z | - |
dc.date.created | 2016-06-08 | - |
dc.date.issued | 2015-07 | - |
dc.description.abstract | The performance of solar cells with a polymer:polymer bulk heterojunction (BHJ) structure, consisting of poly[4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b:4,5-b']dithiophene-alt-3-fluorothieno[3,4-b]thiophene-2-carboxylate] (PTB7-Th) donor and poly[[N,N'-bis(2-octyldodecyl)-naphthalene-1,4,5,8-bis(dicarboximide)-2,6-diyl]-alt-5,5'-(2,2'-bithiophene)] (P(NDI2OD-T2)) acceptor polymers, was investigated as a function of cosolvent (p-xylene:chlorobenzene (pXL:CB)) composition ratio. A remarkable efficiency improvement (similar to 38%) was achieved by spin-coating the photoactive blend layer from pXL:CB = 80:20 (volume) rather than pXL alone, but the efficiency then decreased when the CB content increased further to pXL:CB = 60:40. The improved efficiency was correlated with a particular PTB7-Th:P(NDI2OD-T2) donor-acceptor blend nanostructure, evidenced by a fiber-like surface morphology, a red-shifted optical absorption, and enhanced PL quenching. Further device optimization for pXL:CB = 80:20 films yielded a power conversion efficiency of similar to 5.4%. However, these devices showed very poor stability (similar to 15 min for a 50% reduction in initial efficiency), owing specifically to degradation of the PTB7-Th donor-component. Replacing PTB7-Th with a more stable donor polymer will be essential for any application potential to be realized. | - |
dc.identifier.bibliographicCitation | ACS APPLIED MATERIALS & INTERFACES, v.7, no.29, pp.15995 - 16002 | - |
dc.identifier.doi | 10.1021/acsami.5b04224 | - |
dc.identifier.issn | 1944-8244 | - |
dc.identifier.scopusid | 2-s2.0-84938633992 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/20033 | - |
dc.identifier.url | http://pubs.acs.org/doi/abs/10.1021/acsami.5b04224 | - |
dc.identifier.wosid | 000358897200036 | - |
dc.language | 영어 | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Pronounced Cosolvent Effects in Polymer:Polymer Bulk Heterojunction Solar Cells with Sulfur-Rich Electron-Donating and Imide-Containing Electron-Accepting Polymers | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | polymer:polymer solar cells | - |
dc.subject.keywordAuthor | cosolvents | - |
dc.subject.keywordAuthor | nanostructure | - |
dc.subject.keywordAuthor | stability | - |
dc.subject.keywordAuthor | degradation | - |
dc.subject.keywordPlus | POWER CONVERSION EFFICIENCY | - |
dc.subject.keywordPlus | HIGH-PERFORMANCE | - |
dc.subject.keywordPlus | REGIOREGULAR POLY(3-HEXYLTHIOPHENE) | - |
dc.subject.keywordPlus | PHOTOVOLTAIC DEVICES | - |
dc.subject.keywordPlus | CONJUGATED POLYMERS | - |
dc.subject.keywordPlus | MORPHOLOGY CONTROL | - |
dc.subject.keywordPlus | BLENDS | - |
dc.subject.keywordPlus | FULLERENE | - |
dc.subject.keywordPlus | DONOR | - |
dc.subject.keywordPlus | BENZOTHIADIAZOLE | - |
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