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Kim, Jin Young
Next Generation Energy Lab.
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dc.citation.endPage 1497 -
dc.citation.number 14 -
dc.citation.startPage 1489 -
dc.citation.volume 56 - Song, Suhee - Keum, Sangha - Lee, Ji-Hyun - Lee, Jihoon - Kim, Seungmin - Park, Seong Soo - Kim, Jin Young - Park, Sung Heum - Jin, Youngeup - 2023-12-21T20:38:07Z - 2023-12-21T20:38:07Z - 2018-06-19 - 2018-07 -
dc.description.abstract We report the synthesis of low bandgap polymers with a difluoroquinoxaline unit by Stille polymerization for use in polymer solar cells (PSCs). A new series of copolymers with 2,3-didodecyl-6,7-difluoro quinoxaline as the electron-deficient unit and alkyloxybenzo[1,2-b:4,5-b]dithiophene and thiophene as the electron-rich unit were synthesized. The photovoltaic properties of the devices based on the synthesized polymers revealed that the fluorine atoms at the quinoxaline units aid in decreasing the highest occupied molecular orbital (HOMO) energy levels; this in turn increased the open circuit voltage of the devices. The polymers with long alkyl chains exhibited good solubility that increased their molecular weight, but the power conversion efficiency was low. Efficient polymer solar cells were fabricated by blending the synthesized copolymers with PC71BM, and the PCE increased up to 5.11% under 100 mW cm(-2) AM 1.5 illumination. These results demonstrate that the importance of having a control polymer to be synthesized and characterized side by side with the fluorine analogues. -
dc.identifier.bibliographicCitation JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, v.56, no.14, pp.1489 - 1497 -
dc.identifier.doi 10.1002/pola.29014 -
dc.identifier.issn 0887-624X -
dc.identifier.scopusid 2-s2.0-85045831987 -
dc.identifier.uri -
dc.identifier.url -
dc.identifier.wosid 000434417900001 -
dc.language 영어 -
dc.publisher WILEY-BLACKWELL -
dc.title Photovoltaic polymers based on difluoroqinoxaline units with deep HOMO levels -
dc.type Article -
dc.description.isOpenAccess FALSE -
dc.relation.journalWebOfScienceCategory Polymer Science -
dc.relation.journalResearchArea Polymer Science -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
dc.subject.keywordAuthor alkyl chain -
dc.subject.keywordAuthor fluorine atom -
dc.subject.keywordAuthor polymer -
dc.subject.keywordAuthor solar cells -
dc.subject.keywordAuthor synthesis -
dc.subject.keywordPlus ORGANIC SOLAR-CELLS -
dc.subject.keywordPlus OPEN-CIRCUIT VOLTAGE -
dc.subject.keywordPlus LOW-BANDGAP POLYMERS -
dc.subject.keywordPlus SEMICONDUCTING POLYMERS -
dc.subject.keywordPlus CONJUGATED COPOLYMERS -
dc.subject.keywordPlus SINGLE-JUNCTION -
dc.subject.keywordPlus SIDE-CHAIN -
dc.subject.keywordPlus EFFICIENCY -
dc.subject.keywordPlus QUINOXALINE -
dc.subject.keywordPlus PERFORMANCE -


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