Columnar-Structured Low-Concentration Donor Molecules in Bulk Heterojunction Organic Solar Cells

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dc.contributor.authorSeo, Ji Wonko
dc.contributor.authorKim, Jong Hunko
dc.contributor.authorKim, Min-Cheolko
dc.contributor.authorJin, Seon-Miko
dc.contributor.authorLee, Sang Hoonko
dc.contributor.authorCho, Changsoonko
dc.contributor.authorLee, Eunjiko
dc.contributor.authorYoo, Seunghyupko
dc.contributor.authorPark, Jeong Youngko
dc.contributor.authorLee, Jung-Yongko
dc.date.accessioned2018-04-24T05:10:18Z-
dc.date.available2018-04-24T05:10:18Z-
dc.date.created2018-04-09-
dc.date.created2018-04-09-
dc.date.created2018-04-09-
dc.date.created2018-04-09-
dc.date.created2018-04-09-
dc.date.issued2018-01-
dc.identifier.citationACS OMEGA, v.3, no.1, pp.929 - 936-
dc.identifier.issn2470-1343-
dc.identifier.urihttp://hdl.handle.net/10203/241362-
dc.description.abstractWe investigate the arrangement of donor molecules in vacuum-deposited bulk heterojunction (BHJ) 1,1-bis-(4-bis(4-methyl-phenyl)-amino-phenyl)-cyclohexane (TAPC): C-70-based organic solar cells (OSCs). Even a low dose of donors (similar to 10%) forms columnar structures that provide pathways for efficient hole transport in the BHJ layer; however, these structures disappear at donor concentrations below 10%, generating disconnected and isolated hole pathways. The formation of columnar donor structures is confirmed by the contrast of the contact potential difference, measured by Kelvin probe force microscopy, and by the trap-assisted charge injection at low donor concentrations. The mobility of electrons and holes is well balanced in OSCs owing to the preservation of the hole mobility at such low donor concentrations, consequently maximizing the internal quantum efficiency of the OSCs. A high power conversion efficiency of 6.24% was achieved in inverted TAPC: C-70 (1:9) OSCs.-
dc.languageEnglish-
dc.publisherAMER CHEMICAL SOC-
dc.titleColumnar-Structured Low-Concentration Donor Molecules in Bulk Heterojunction Organic Solar Cells-
dc.typeArticle-
dc.identifier.scopusid2-s2.0-85041123548-
dc.type.rimsART-
dc.citation.volume3-
dc.citation.issue1-
dc.citation.beginningpage929-
dc.citation.endingpage936-
dc.citation.publicationnameACS OMEGA-
dc.identifier.doi10.1021/acsomega.7b01652-
dc.contributor.localauthorYoo, Seunghyup-
dc.contributor.localauthorPark, Jeong Young-
dc.contributor.localauthorLee, Jung-Yong-
dc.contributor.nonIdAuthorKim, Jong Hun-
dc.contributor.nonIdAuthorJin, Seon-Mi-
dc.contributor.nonIdAuthorLee, Eunji-
dc.description.isOpenAccessY-
dc.type.journalArticleArticle-

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