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박혜성

Park, Hyesung
Future Electronics and Energy Lab
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dc.citation.endPage 6377 -
dc.citation.number 7 -
dc.citation.startPage 6370 -
dc.citation.title ACS NANO -
dc.citation.volume 6 -
dc.contributor.author Park, Hyesung -
dc.contributor.author Howden, Rachel M. -
dc.contributor.author Barr, Miles C. -
dc.contributor.author Bulovic, Vladimir -
dc.contributor.author Gleason, Karen -
dc.contributor.author Kong, Jing -
dc.date.accessioned 2023-12-22T05:06:45Z -
dc.date.available 2023-12-22T05:06:45Z -
dc.date.created 2014-10-07 -
dc.date.issued 2012-07 -
dc.description.abstract For the successful integration of graphene as a transparent conducting electrode in organic solar cells, proper energy level alignment at the interface between the graphene and the adjacent organic layer is critical. The role of a hole transporting layer (HTL) thus becomes more significant due to the generally lower work function of graphene compared to ITO. A commonly used HTL material with ITO anodes is poly(3,4-ethylenedioxythiophene) (PEDOT) with poly(styrenesulfonate) (PSS) as the solid-state dopant. However, graphene's hydrophobic surface renders uniform coverage of PEDOT:PSS (aqueous solution) by spin-casting very challenging. Here, we introduce a novel, yet simple, vapor printing method for creating patterned HTL PEDOT layers directly onto the graphene surface. Vapor printing represents the implementation of shadow masking in combination with oxidative chemical vapor deposition (oCVD). The oCVD method was developed for the formation of blanket (i.e., unpatterened) layers of pure PEDOT (i.e., no PSS) with systematically variable work function. In the unmasked regions, vapor printing produces complete, uniform, smooth layers of pure PEDOT over graphene. Graphene electrodes were synthesized under low-pressure chemical vapor deposition (LPCVD) using a copper catalyst. The use of another electron donor material, tetraphenyldibenzoperiflanthene, instead of copper phthalocyanine in the organic solar cells also improves the power conversion efficiency. With the vapor printed HTL, the devices using graphene electrodes yield comparable performances to the ITO reference devices (η p,LPCVD = 3.01%, and η p,ITO = 3.20%). -
dc.identifier.bibliographicCitation ACS NANO, v.6, no.7, pp.6370 - 6377 -
dc.identifier.doi 10.1021/nn301901v -
dc.identifier.issn 1936-0851 -
dc.identifier.scopusid 2-s2.0-84864239468 -
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/6972 -
dc.identifier.url https://pubs.acs.org/doi/10.1021/nn301901v -
dc.identifier.wosid 000306673800070 -
dc.language 영어 -
dc.publisher AMER CHEMICAL SOC -
dc.title Organic Solar Cells with Graphene Electrodes and Vapor Printed Poly(3,4-ethylenedioxythiophene) as the Hole Transporting Layers -
dc.type Article -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
dc.subject.keywordAuthor graphene -
dc.subject.keywordAuthor APCVD -
dc.subject.keywordAuthor LPCVD -
dc.subject.keywordAuthor organic solar cell -
dc.subject.keywordAuthor oCVD PEDOT -
dc.subject.keywordAuthor vapor printing -
dc.subject.keywordAuthor poly(3,4-ethylenedioxythiophene) -
dc.subject.keywordAuthor chemical vapor deposition -
dc.subject.keywordPlus INDIUM TIN OXIDE -
dc.subject.keywordPlus LARGE-AREA -
dc.subject.keywordPlus PHOTOVOLTAIC CELLS -
dc.subject.keywordPlus FILMS -
dc.subject.keywordPlus TRANSPARENT -
dc.subject.keywordPlus DEPOSITION -
dc.subject.keywordPlus ANODES -

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