DC Field | Value | Language |
---|---|---|
dc.contributor.author | Han, Yun Cheol | ko |
dc.contributor.author | Jeong, Eun Gyo | ko |
dc.contributor.author | Kim, Hyuncheol | ko |
dc.contributor.author | Kwon, Seonil | ko |
dc.contributor.author | Im, Hyeon-Gyun | ko |
dc.contributor.author | Bae, Byeong-Soo | ko |
dc.contributor.author | Choi, Kyung Cheol | ko |
dc.date.accessioned | 2016-07-05T08:24:03Z | - |
dc.date.available | 2016-07-05T08:24:03Z | - |
dc.date.created | 2016-05-31 | - |
dc.date.created | 2016-05-31 | - |
dc.date.issued | 2016-04 | - |
dc.identifier.citation | RSC ADVANCES, v.6, no.47, pp.40835 - 40843 | - |
dc.identifier.issn | 2046-2069 | - |
dc.identifier.uri | http://hdl.handle.net/10203/209376 | - |
dc.description.abstract | Thin film encapsulation of flexible organic light-emitting diodes (FOLEDs) with a moisture barrier, incorporating a silica nanoparticle-embedded sol-gel organic-inorganic hybrid nanocomposite (S-H nanocomposite) and Al2O3 were demonstrated, and their reliability and mechanical characteristics were assessed. The bending stress of the multi-layer structure for both the case of moisture barriers and encapsulated FOLEDs was investigated based on nonlinear finite-element analysis (FEA). To minimize the bending stress at the desired region, the neutral axis (NA) position could be strategically adjusted by the introduction of a buffer layer of UV-curable cycloaliphatic epoxy hybrid materials (hybrimer), synthesized via a sol-gel reaction. The optimized multi-layer structure, proposed as a result of FEA was validated by related experiments. Regarding the bending characteristics of the moisture barrier structure, the water vapor transmission rate (WVTR) of the hybrimer-coated moisture barrier was much lower than that of a non-coated sample, as a result of calcium corrosion tests after bending. The structure of encapsulated FOLEDs, which are coated by the hybrimer achieved an almost identical performance to that of non-bending samples in spite of 30 days exposure to 30 degrees C and 90% R.H. after a bending test with a radius of 1 cm. During this period, the occurrence of dark spots caused by moisture penetration was effectively suppressed. Collectively, these results suggest that the bending characteristics of hybrimer-coated multi-layer structures are remarkably improved with the theoretical prediction of the NA position | - |
dc.language | English | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.title | Reliable thin-film encapsulation of flexible OLEDs and enhancing their bending characteristics through mechanical analysis | - |
dc.type | Article | - |
dc.identifier.wosid | 000375270600027 | - |
dc.identifier.scopusid | 2-s2.0-84966397076 | - |
dc.type.rims | ART | - |
dc.citation.volume | 6 | - |
dc.citation.issue | 47 | - |
dc.citation.beginningpage | 40835 | - |
dc.citation.endingpage | 40843 | - |
dc.citation.publicationname | RSC ADVANCES | - |
dc.identifier.doi | 10.1039/c6ra06571f | - |
dc.contributor.localauthor | Bae, Byeong-Soo | - |
dc.contributor.localauthor | Choi, Kyung Cheol | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | GAS-DIFFUSION BARRIERS | - |
dc.subject.keywordPlus | ATOMIC LAYER DEPOSITION | - |
dc.subject.keywordPlus | LIGHT-EMITTING DEVICES | - |
dc.subject.keywordPlus | ORGANIC ELECTRONIC DEVICES | - |
dc.subject.keywordPlus | POLYMERS | - |
dc.subject.keywordPlus | AL2O3 | - |
dc.subject.keywordPlus | INDENTATION | - |
dc.subject.keywordPlus | MULTILAYERS | - |
dc.subject.keywordPlus | PERMEATION | - |
dc.subject.keywordPlus | DIODES | - |
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