Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 임원빈 | - |
dc.date.accessioned | 2019-11-20T09:16:10Z | - |
dc.date.available | 2019-11-20T09:16:10Z | - |
dc.date.issued | 2017-02 | - |
dc.identifier.citation | ACS APPLIED MATERIALS & INTERFACES, v. 9, no. 8, page. 7232-7240 | en_US |
dc.identifier.issn | 1944-8244 | - |
dc.identifier.issn | 1944-8252 | - |
dc.identifier.uri | https://pubs.acs.org/doi/10.1021/acsami.6b14012 | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/112681 | - |
dc.description.abstract | A moisture-stable, red-emitting fluoride phosphor with an organic hydrophobic skin is reported. A simple strategy was employed to form a metal-free, organic, passivating skin using oleic acid (OA) as a hydrophobic encapsulant via solvothermal treatment. Unlike other phosphor coatings that suffer from initial efficiency loss, the OA-passivated K2SiF6:Mn4+ (KSF-OA) phosphor exhibited the unique property of stable emission efficiency. Control of thickness and a highly transparent passivating layer helped to retain the emission efficiency of the material after encapsulation. A moisture-stable KSF-OA phosphor could be synthesized because of the exceptionally hydrophobic nature of OA and the formation of hydrogen bonds (F...H) resulting from the strong interactions between the fluorine in KSF and hydrogen in OA. The KSF-OA phosphor exhibited excellent moisture stability and maintained 85% of its emission intensity even after 450 h at high temperature (85 degrees C) and humidity (85%). As a proof-of-concept, this strategy was used for another moisture-sensitive SrSi2O2N2:Eu2+ phosphor which showed enhanced moisture stability, retaining 85% of emission intensity after 500 h under the same conditions. White light-emitting were fabricated using surface-passivated KSF and Y3Al5O12:Ce3+ which exhibited excellent color rendering index of 86, under blue LED excitation. | en_US |
dc.description.sponsorship | This research is supported by the Strategic Key-Material Development and the Materials and Components Research and Development bodies, funded by the Ministry of Knowledge Economy (MKE, Korea). This work was also financially supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by Ministry of Science, ICT & Future Planning (NRF-2014R1A1A1002909 and 2016R1E1A2020571). | en_US |
dc.language.iso | en_US | en_US |
dc.publisher | AMER CHEMICAL SOC | en_US |
dc.subject | K2SiF6:Mn4+ | en_US |
dc.subject | moisture-resistant | en_US |
dc.subject | oleic acid | en_US |
dc.subject | solvothermal | en_US |
dc.subject | and red phosphor | en_US |
dc.title | Hydrophobic organic skin as a protective shield for moisture-sensitive phosphor-based optoelectronic devices | en_US |
dc.type | Article | en_US |
dc.identifier.doi | 10.1021/acsami.6b14012 | - |
dc.relation.journal | ACS APPLIED MATERIALS & INTERFACES | - |
dc.contributor.googleauthor | Arunkumar, Paulraj | - |
dc.contributor.googleauthor | Kim, Yoon Hwa | - |
dc.contributor.googleauthor | Kim, Ha Jun | - |
dc.contributor.googleauthor | Unithrattil, Sanjith | - |
dc.contributor.googleauthor | Im, Won Bin | - |
dc.relation.code | 2017001478 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF ENGINEERING[S] | - |
dc.sector.department | DIVISION OF MATERIALS SCIENCE AND ENGINEERING | - |
dc.identifier.pid | imwonbin | - |
dc.identifier.researcherID | B-1335-2011 | - |
dc.identifier.orcid | http://orcid.org/0000-0003-2473-4714 | - |
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