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dc.contributor.author임원빈-
dc.date.accessioned2021-05-14T04:44:05Z-
dc.date.available2021-05-14T04:44:05Z-
dc.date.issued2020-03-
dc.identifier.citationCHEMISTRY OF MATERIALS, v. 32, no. 7, page. 3097-3108en_US
dc.identifier.issn0897-4756-
dc.identifier.issn1520-5002-
dc.identifier.urihttps://pubs.acs.org/doi/10.1021/acs.chemmater.0c00095-
dc.identifier.urihttps://repository.hanyang.ac.kr/handle/20.500.11754/162044-
dc.description.abstractIn this study, we report on the development of a new garnet phosphor with enhanced optical properties and cost reduction. Samples were prepared using the solid-solution method, in which the chemical unit and substitutions with cation-size mismatch were combined. Solid solutions between two garnet structure compounds, green phosphor Lu3Al5O12:Ce3+ (LuAG:Ce3+) and orange phosphor Lu2CaMg2Si3O12:Ce3+ (Lu3-x CaxAl2-2xMg2xAl3-3xSi3xO12:Ce3+), constituted the complete solid-solution range x (x = 0-1). The crystal structures of all the compounds were discerned through Rietveld refinement based on the X-ray diffraction patterns. The unique occupancy of {Lu/Ca}, [Al/Mg], (Al/Si), and O atoms in the solid-solution samples was identified. Optical properties were classified in terms of the excitation and emission spectra, quantum yield, and temperature-dependent photoluminescence intensity. To investigate the relationship between the structural and optical changes, Ba2+ ions (employed for cation-size mismatch) were substituted into dodecahedral and octahedral sites at various concentrations. Finally, we report the development of a new green garnet phosphor via the use of a solid-solution design and cation-size mismatch, the emission intensity of which was measured 116% higher than that of commercial LuAG:Ce3+.en_US
dc.description.sponsorshipThis research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF), funded by the Ministry of Science, ICT & Future Planning (Project no. 2017R1A2B3011967); the Engineering Research Center through the NRF, funded by the Korean Goverment (M S I T) (Project no. NRF-2018R1A5A1025224); the Technology Innovation Program (KEIT-20002947) funded by the Ministry of Trade, Industry & Energy (MOTIE, Korea); and the Global PhD Fellowship Program through the NRF funded by the Ministry of Education (NRF-2018H1A2A1062877).en_US
dc.language.isoenen_US
dc.publisherAMER CHEMICAL SOCen_US
dc.subjectCRYSTAL-CHEMISTRYen_US
dc.subjectCE3+ LUMINESCENCEen_US
dc.subjectPHOTOLUMINESCENCEen_US
dc.subjectENERGYen_US
dc.titleCation-Size Mismatch as a Design Principle for Enhancing the Efficiency of Garnet Phosphorsen_US
dc.typeArticleen_US
dc.relation.no.-
dc.relation.volume32-
dc.identifier.doi10.1021/acs.chemmater.0c00095-
dc.relation.page3097-3108-
dc.relation.journalCHEMISTRY OF MATERIALS-
dc.contributor.googleauthorKim, Yoon Hwa-
dc.contributor.googleauthorKim, Ha Jun-
dc.contributor.googleauthorOng, Shyue Ping-
dc.contributor.googleauthorWang, Zhenbin-
dc.contributor.googleauthorIm, Won Bin-
dc.relation.code2020047122-
dc.sector.campusS-
dc.sector.daehakCOLLEGE OF ENGINEERING[S]-
dc.sector.departmentDIVISION OF MATERIALS SCIENCE AND ENGINEERING-
dc.identifier.pidimwonbin-
dc.identifier.researcherIDB-1335-2011-
dc.identifier.orcidhttp://orcid.org/0000-0003-2473-4714-
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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