首页|Effect of radiative loss mechanisms on FIR thermometric parameters of Nd3+-doped lithium tellurite glasses

Effect of radiative loss mechanisms on FIR thermometric parameters of Nd3+-doped lithium tellurite glasses

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Nd3+-doped tellurite glasses are promising materials for thermometers based on the fluorescence in-tensity ratio(FIR)technique.Nevertheless,at high Nd3+concentrations,energy transfer(ET)processes such as optical reabsorption and cross-relaxation can affect the Nd3+emission,which has been little explored in the literature.Therefore,the present work investigated the use of Nd3+-doped tellurite glass(samples doped with Nd3+at 0.2 mol％,0.5 mol％,2.0 mol％,and 4.0 mol％)in fluorescence thermometers,in the temperature range from 299 to 371 K.The results indicate a strong dependence of the FIR pa-rameters on the Nd3+concentration,due to changes in the emission band profiles caused by optical reabsorption of the Nd3+emissions and cross-relaxation processes.A decrease of the relative sensitivity of the ratio 4F5/2 → 4I9/2/4F3/2 → 4I9/2 is observed for samples doped with higher amounts of Nd3+.The maximum relative sensitivity at 299 K is 3.00％/K,which is the highest value among the reported Nd3+ions.

Nd3+-doped tellurite glassFluorescence intensity ratioOptical thermometryJudd-OfeltRare earths

C.Y. Morassuti、A.P.L Silva、L.A.O. Nunes、S.M. Lima、L.H.C. Andrade

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Optical and Photothermal Spectroscopy Group(GEOF),Center for Studies in Natural Resources(CERNA),State University of Mato Grosso do Sul(UEMS),C.P.351,Dourados,MS,Brazil

Renato Archer Information Technology Center,Dom Pedro Ⅰ Highway(SP-65),Km 143,6-Chácaras Campos dos Amarais,Campinas,SP,Brazil

Institute of Physics of São Carlos,University of São Paulo,São Carlos,SP,Brazil

National Council for Scientific and Technological Development(CNPq)National Council for Scientific and Technological Development(CNPq)National Council for Scientific and Technological Development(CNPq)Development of Education,Science and Technology of the State of Mato Grosso do Sul(FUNDECT)Development of Education,Science and Technology of the State of Mato Grosso do Sul(FUNDECT)

305067/2019-2303707/2022-4306452/2018-959/300.634/201671/027.247/2022

2024

10.1016/j.jre.2023.06.004

稀土学报(英文版)
中国稀土学会

稀土学报(英文版)

CSTPCDEI
影响因子：1.3
ISSN：1002-0721
年,卷(期)：2024.42(7)