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Shin, Tae Joo
Synchrotron Radiation Research Lab.
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dc.citation.endPage 23905 -
dc.citation.number 45 -
dc.citation.startPage 23894 -
dc.citation.title Journal of Materials Chemistry A -
dc.citation.volume 8 - Ryu, Hwa Sook - Lee, Hyun Gyeong - Shin, Sang-Chul - Park, Jooho - Kim, Sang Hyeon - Kim, Eun Ji - Shin, Tae Joo - Shim, Jae Won - Kim, Bumjoon J. - Woo, Han Young - 2023-12-21T16:39:25Z - 2023-12-21T16:39:25Z - 2020-12-08 - 2020-12 -
dc.description.abstract Two types of small molecule nonfullerene acceptors (IDICO1 and IDICO2) based on 2,2 '-((2Z,2 ' Z)-((4,4,9,9-tetrahexyl-4,9-dihydro-s-indaceno[1,2-b:5,6-b ']dithiophene-2,7-diyl)bis(methanylylidene))bis(3-oxo-2,3-dihydro-1H-indene-2,1-diylidene))dimalononitrile (IDIC) are synthesized by attaching octyl side-chains onto terminal end groups. The alkyl substitution increases the lowest unoccupied molecular orbitals (-3.81 to -3.86 eV) of the two acceptors, compared to that of IDIC (-3.94 eV). Interestingly, the IDICO1 and IDICO2 films have higher integrated absorption coefficients (1.49 x 10(7) cm(-1)) than the IDIC (1.29 x 10(7) cm(-1)) film. Also, the electron mobilities of IDICO1 and IDICO2 are approximately twice as high as that of IDIC. The terminal octyl substitution also improves the miscibility with a donor polymer (PBDB-T) to form well-intermixed blends with a decreased pi-pi stacking distance. As a result, their photovoltaic devices exhibit significant improvements in both the open-circuit voltage and short-circuit current density, compared to those of the reference PBDB-T:IDIC device, exhibiting maximum power conversion efficiencies of up to 9.64%, 20.4%, and 1.68% under 1-sun, 1000-lx LED, and halogen lamp illumination, respectively, which are significantly higher than those of PBDB-T:IDIC (7.2%, 11.7%, and 1.2%, respectively). It is worth noting that a maximum power density of 141.4 mu W cm(-2) is achieved for the PBDB-T:IDICO2-based device under a halogen lamp, which is the highest value reported to date among those achieved under indoor lighting conditions. -
dc.identifier.bibliographicCitation Journal of Materials Chemistry A, v.8, no.45, pp.23894 - 23905 -
dc.identifier.doi 10.1039/d0ta07684h -
dc.identifier.issn 2050-7488 -
dc.identifier.scopusid 2-s2.0-85096912863 -
dc.identifier.uri -
dc.identifier.url!divAbstract -
dc.identifier.wosid 000593047100016 -
dc.language 영어 -
dc.publisher ROYAL SOC CHEMISTRY -
dc.title Terminal alkyl substitution in an A-D-A-type nonfullerene acceptor: simultaneous improvements in the open-circuit voltage and short-circuit current for efficient indoor power generation -
dc.type Article -
dc.description.isOpenAccess FALSE -
dc.relation.journalWebOfScienceCategory Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary -
dc.relation.journalResearchArea Chemistry; Energy & Fuels; Materials Science -
dc.type.docType Article -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
dc.subject.keywordPlus RING ELECTRON-ACCEPTOR -
dc.subject.keywordPlus SIDE-CHAIN -
dc.subject.keywordPlus LARGE-AREA -
dc.subject.keywordPlus PERFORMANCE -
dc.subject.keywordPlus FULLERENE -
dc.subject.keywordPlus CRYSTALLIZATION -
dc.subject.keywordPlus RESISTANCE -
dc.subject.keywordPlus DESIGN -
dc.subject.keywordPlus POLYMER SOLAR-CELLS -
dc.subject.keywordPlus ORGANIC PHOTOVOLTAIC CELLS -


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