Luminescence probe for temperature sensor based on fluorescence intensity ratio
作者： Hui Li , Yundong Zhang , Lin Shao , ZinMaung Htwe , Ping Yuan
DOI: 10.1364/OME.7.001077
关键词:
摘要: The β-NaLuF4: Yb3+/Ho3+ nanocrystals have been synthesized via a solvothermal method, which were protected in SiO2 capillary tube. Upon 980 nm continuous laser excitation, the micro-tube waveguide characteristic was studied. Additionally, upconversion emissions from 5F4, 5S2→5I8 (~545 nm), 5F5→5I8 (~650 nm) and 5S2→5I7 (~750 transitions of Ho3+ ions obtained studied as function temperature range 300~500 K. maximum sensitivities derived fluorescence intensity ratio technique are 1.53% K−1 (I750/I650) 0.09% (I545/I650) at 300 result demonstrated that near infrared-red absolute sensitivity is more sensitive thermometer than green-red whole range. device promising candidate for high resolution luminescent thermometers operating under
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