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Li2TiO3:Mn4+ Deep‐Red Phosphor for the Lifetime‐Based Luminescence Thermometry
dc.creator | Dramićanin, Miroslav | |
dc.creator | Milićević, Bojana R. | |
dc.creator | Đorđević, Vesna R. | |
dc.creator | Ristić, Zoran | |
dc.creator | Zhou, Jianbang | |
dc.creator | Milivojević, Dušan | |
dc.creator | Papan, Jelena | |
dc.creator | Brik, Mikhail G. | |
dc.creator | Ma, Chong‐Geng | |
dc.creator | Srivastava, Alok M | |
dc.creator | Wu, Mingmei | |
dc.date.accessioned | 2019-11-22T10:50:56Z | |
dc.date.available | 2019-11-22T10:50:56Z | |
dc.date.issued | 2019 | |
dc.identifier.issn | 2365-6549 | |
dc.identifier.uri | https://vinar.vin.bg.ac.rs/handle/123456789/8360 | |
dc.description.abstract | Luminescence of monoclinic lithium metatitanate (Li2TiO3) powders activated with different quantities of Mn4+ is studied in detail. Its strong deep-red emission arising from the Mn4+ 2Eg → 4A2g spin forbidden transition is centered at around 688 nm and is suitable for luminescence thermometry. Structural and electron paramagnetic resonance analyses show that Mn4+ ions are equally distributed in two almost identical Ti4+ sites in which they are octahedrally coordinated by six oxygen ions. Calculations based on the exchange charge model of the crystal field provided values of Racah parameters (B=760 cm−1, C= 2993 cm−1), crystal-field splitting Dq= 2043 cm−1, and the nephelauxetic parameter β1=0.9775. The maximal quantum efficiency of 24.1% at room temperature is found for 0.126% Mn4+ concentration. Temperature quenching of emission occurs by a cross-over via 4T2 excited state of the Mn4+ ions with T1/2=262 K and is quite favorable for the application in the lifetime-based luminescence thermometry since relative changes in emission decay values are exceptionally-large (around 3.21% at room temperature). We derived theoretical expressions for the temperature dependence of the absolute and relative sensitivities and discuss the influence of host material properties on lifetime sensitivities. © 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim | en |
dc.language.iso | en | |
dc.relation | info:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45020/RS// | |
dc.relation | National Recruitment Program of High-end Foreign Experts by Chongqing University of Posts and Telecommunications (CQUPT), P.R. China [GDT20185200479] | |
dc.relation | Joint Funds of the National Natural Science Foundation of China (NSFC) and Yunnan Province [U1702254] | |
dc.relation | National Natural Science Foundation of China [51802359] | |
dc.relation | Science and Technology Planning Project of Guangdong Province for Applied Science and Technology Research and Development [2017B090917001] | |
dc.relation | Science and Technology Planning Project of Guangdong Province for Applied Science and Technology Research and Development [2016B090931007] | |
dc.relation | Programme for the Foreign Experts [W2017011] | |
dc.relation | Wenfeng High-end Talents Project by Chongqing University of Posts and Telecommunications (CQUPT) [W2016-01] | |
dc.relation | Estonian Research Council grant [PUT PRG111] | |
dc.relation | European Regional Development Fund [TK141] | |
dc.relation | National Recruitment Program of High-end Foreign Experts [GDT20185200479] | |
dc.relation | National Recruitment Program of High-end Foreign Experts [GDW20145200225] | |
dc.rights | restrictedAccess | |
dc.source | ChemistrySelect | |
dc.subject | crystal field | en |
dc.subject | exchange charge model | en |
dc.subject | luminescence thermometry | en |
dc.subject | Mn4+ emission | en |
dc.subject | temperature quenching of emission | en |
dc.title | Li2TiO3:Mn4+ Deep‐Red Phosphor for the Lifetime‐Based Luminescence Thermometry | en |
dc.type | article | en |
dc.rights.license | ARR | |
dcterms.abstract | Сривастава, Aлок М; Драмићанин, Мирослав; Ристић, Зоран; Зхоу, Јианбанг; Милићевић, Бојана; Ђорђевић, Весна; Брик, Микхаил Г; Ма, Цхонг‐Генг; Миливојевић, Душан; Папан, Јелена; Wу, Мингмеи; | |
dc.rights.holder | © 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim | |
dc.citation.volume | 4 | |
dc.citation.issue | 24 | |
dc.citation.spage | 7067 | |
dc.citation.epage | 7075 | |
dc.identifier.wos | 000473201200005 | |
dc.identifier.doi | 10.1002/slct.201901590 | |
dc.citation.rank | M23 | |
dc.type.version | publishedVersion | |
dc.identifier.scopus | 2-s2.0-85068071190 |
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