In this study, a novel temperature-sensitive material, SrYGeO:Bi,Sm phosphor, was successfully synthesized by a solid-state reaction method. Under 376 nm light excitation, the as-prepared phosphor presents both blue emissions of Bi and orange red emissions of Sm due to energy transfer from Bi to Sm. Owing to the significant difference in thermal quenching properties and the distinguishable emission between Bi and Sm ions, the temperature sensing performance of the prepared phosphor was evaluated by measuring the fluorescence intensity ratio (FIR) of Sm Bi. More importantly, for the first time, it was found that the absolute and relative sensitivities of SrYGeO:Bi,Sm could be tuned by changing the concentration of activators to determine the optimal temperature measurement conditions, which opened up the possibility of improving the performance of fluorescence temperature sensing materials.
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| http://dx.doi.org/10.1039/d2dt03153a | DOI Listing |
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