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dc.contributor.authorZhang, Xuejie
dc.contributor.authorFang, Mu-Huai
dc.contributor.authorTsai, Yi-Ting
dc.contributor.authorLazarowska, Agata
dc.contributor.authorMahlik, Sebastian
dc.contributor.authorLesniewski, Tadeusz
dc.contributor.authorGrinberg, Marek
dc.contributor.authorPang, Wei Kong
dc.contributor.authorPan, Fengjuan
dc.contributor.authorLiang, Chaolun
dc.contributor.authorZhou, Wuzong
dc.contributor.authorWang, Jing
dc.contributor.authorLee, Jyh-Fu
dc.contributor.authorCheng, Bing-Ming
dc.contributor.authorHung, Tsu-Lien
dc.contributor.authorChen, Yang-Yuan
dc.contributor.authorLiu, Ru-Shi
dc.identifier.citationZhang , X , Fang , M-H , Tsai , Y-T , Lazarowska , A , Mahlik , S , Lesniewski , T , Grinberg , M , Pang , W K , Pan , F , Liang , C , Zhou , W , Wang , J , Lee , J-F , Cheng , B-M , Hung , T-L , Chen , Y-Y & Liu , R-S 2017 , ' Controlling of structural ordering and rigidity of β-SiAlON:Eu through chemical cosubstitution to approach narrow-band-emission for light-emitting diodes application ' , Chemistry of Materials , vol. 29 , no. 16 , pp. 6781-6792 .
dc.identifier.otherPURE: 250568564
dc.identifier.otherPURE UUID: c1fe20f3-bbed-4f79-a5ea-1bdd3c74ae0c
dc.identifier.otherScopus: 85027865540
dc.identifier.otherORCID: /0000-0001-9752-7076/work/58055020
dc.identifier.otherWOS: 000408519800026
dc.descriptionThe authors are grateful for the financial support of the Ministry of Science and Technology of Taiwan (Contract Nos. MOST 104- 2113-M-002-012-MY3, MOST 104-2119-M-002-027-MY3 and 104-2923-M-002-007-MY3) and Australia Research Council (ARC, FT160100251). The contribution of A. L. was supported by the grant “Preludium” UMO-2014/13/N/ST3/03781 from the National Science Center. The contribution of S. M. was supported by the grant “Iuventus Plus” 0271/IP3/2015/73 from the Ministry of Science and Higher Education. M. G. was supported by Polish National Center for Research and Development with grants no PBS3/A5/48/2015 and PL-TWII/8/2015.en
dc.description.abstractNarrow-band green-emitting phosphor β-SiAlON:Eu has been widely used in advanced wide-gamut backlighting de- vices. However, the origins for unusual sharp lines in photoluminescence emission at room temperature and tunable narrow-band- emission tailored by reducing Al-O in β-SiAlON:Eu are still unclear. Here, the presence of sharp-line fine structure in the emission spectra of β-SiAlON:Eu is mainly due to purely electronic transitions (zero phonon lines) and their vibronic repetitions resulted from the multi-microenvironment around Eu2+ ions that has been revealed by relative emission intensity of sharp line depends on excitation wavelength and monotonously increasing decay time. The specific features of the Eu2+ occupying interstitial sites indicate that the effect of crystal field strength can be neglected. Therefore the enhanced rigidity and higher ordering structure of β-SiAlON:Eu with decreasing the substitution of Si–N by Al–O become the main factors in decreasing electron–lattice coupling and reducing inhomo- geneous broadening, favouring the blue-shift and narrow of the emission band, the enhanced thermal stability, as well as the charge state of Eu2+. Our results provide new insights for explaining the reason for narrow-band-emission in β-SiAlON:Eu, which will deliver an impetus for the exploration of phosphors with narrow band and ordering structure.
dc.relation.ispartofChemistry of Materialsen
dc.rightsCopyright © 2017 American Chemical Society. This work has been made available online in accordance with the publisher’s policies. This is the author created accepted version manuscript following peer review and as such may differ slightly from the final published version. The final published version of this work is available at:
dc.subjectQD Chemistryen
dc.titleControlling of structural ordering and rigidity of β-SiAlON:Eu through chemical cosubstitution to approach narrow-band-emission for light-emitting diodes applicationen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews. School of Chemistryen
dc.contributor.institutionUniversity of St Andrews. EaSTCHEMen
dc.description.statusPeer revieweden

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