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- W2890954935 abstract "Abstract Dual-emitting and thermochromic Eu2+, Mn2+ co-doped Na3Sc2P3O12 (NSPO) phosphor was synthesized by a modified solid-state method. Its crystal structure and luminescent properties, especially temperature-dependent fluorescence properties are discussed in detail. Na3Sc2P3O12: Eu2+, Mn2+ simultaneously exhibits two broad bands under single UV excitation, i.e. Eu2+ blue emission band centered at 460 nm and Mn2+ red emission band centered at 600 nm with quantum efficiency of >90%. The dual emissions in Na3Sc2P3O12: Eu2+, Mn2+ have different thermal responses due to the competition between trap-to-activator energy transfer and thermal quenching, by which a novel self-referencing non-invasion optical thermometer with high sensitivity and superior signal discriminability was designed. The temperature sensing properties of Na3Sc2P3O12: Eu2+, Mn2+ in a wide range of 293–473 K were analyzed, which shows good linear relationship between ratiometric intensity and temperature (R2 > 0.999) as well as high sensitivity (1.556% K−1). Besides, the emitting color is highly sensitive to the temperature variation. The results suggest that Na3Sc2P3O12: Eu2+, Mn2+ could be a good candidate high-sensitive for optical thermometry and safety sign in high temperature environment." @default.
- W2890954935 created "2018-09-27" @default.
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- W2890954935 date "2019-01-01" @default.
- W2890954935 modified "2023-10-17" @default.
- W2890954935 title "A ratiometric optical thermometer with high sensitivity and superior signal discriminability based on Na3Sc2P3O12: Eu2+, Mn2+ thermochromic phosphor" @default.
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- W2890954935 doi "https://doi.org/10.1016/j.cej.2018.09.075" @default.
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