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dc.contributor.author장재영-
dc.date.accessioned2019-11-30T05:29:38Z-
dc.date.available2019-11-30T05:29:38Z-
dc.date.issued2017-09-
dc.identifier.citationORGANIC ELECTRONICS, v. 48, page. 323-329en_US
dc.identifier.issn1566-1199-
dc.identifier.issn1878-5530-
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S1566119917302896?via%3Dihub-
dc.identifier.urihttp://repository.hanyang.ac.kr/handle/20.500.11754/115428-
dc.description.abstractReduced graphene oxide (rGO) sheets have received great attention as a key element for thin barrier films that block the permeation of water vapor and other gases. However, it remains a challenge to prepare the rGO-based barrier films on plastic substrates through a chemically benign and low temperature fabrication route. Toxic chemicals or high temperature thermal treatments that are widely used for preparing rGO need to be avoided because they can damage the underlying plastic substrates. In this study, we report the fabrication of rGO/TiO2 composite films via an eco-friendly and low temperature ultraviolet (UV) photoreduction process and demonstrate their enhanced gas barrier properties by measuring water vapor transmission rates (WVTRs). When photocatalytic TiO2 nanoparticles are employed, UV exposure reduces the GO/TiO2 composite solution to form rGO/TiO2, which is subsequently deposited on plastic substrates. The rGO/TiO2 composites become resistant to water absorption because the UV photoreduction of GO/TiO2 effectively removes most polar groups on the GO sheets. We confirmed that rGO/TiO2 composites were successfully deposited onto the plastic substrate through a solution process and the barrier films led to a substantial reduction in WVTRs of the substrate. Our strategy for preparing graphene-based thin barrier films by using a UV photoreduction process enables the fabrication of solution-processed graphene-based encapsulation layers on plastic substrates with an eco-friendly and low temperature fabrication method. (C) 2017 Elsevier B.V. All rights reserved.en_US
dc.description.sponsorshipThe first two authors contributed equally to this work. This work was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2015R1D1A1A02062369).en_US
dc.language.isoen_USen_US
dc.publisherELSEVIER SCIENCE BVen_US
dc.subjectBarrier propertiesen_US
dc.subjectReduced graphene oxide/TiO2en_US
dc.subjectnanocompositesen_US
dc.subjectPhotoreductionen_US
dc.subjectWater vapor transmission ratesen_US
dc.subjectPassivationen_US
dc.subjectSolution processen_US
dc.titleEnhanced gas barrier properties of graphene-TiO2 nanocomposites on plastic substrates assisted by UV photoreduction of graphene oxideen_US
dc.typeArticleen_US
dc.relation.volume48-
dc.identifier.doi10.1016/j.orgel.2017.06.032-
dc.relation.page323-329-
dc.relation.journalORGANIC ELECTRONICS-
dc.contributor.googleauthorNam, Sooji-
dc.contributor.googleauthorJeong, Yong Jin-
dc.contributor.googleauthorPark, Chan Eon-
dc.contributor.googleauthorJang, Jaeyoung-
dc.relation.code2017003342-
dc.sector.campusS-
dc.sector.daehakCOLLEGE OF ENGINEERING[S]-
dc.sector.departmentDEPARTMENT OF ENERGY ENGINEERING-
dc.identifier.pidjyjang15-
dc.identifier.orcidhttp://orcid.org/0000-0002-5548-8563-
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COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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