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Tunable upconversion luminescence and enhanced temperature sensitive properties from Bi.sub.2Ti.sub.2O.sub.7:Yb.sup.3+/Er.sup.3+ nanofibers

Xu, Meimei ; Ge, Wanyin ; Tian, Ye ; Wu, Yuanting ; Li, Yongxiang

Journal of materials science, 2021-05, Vol.56 (15), p.9302 [Periódico revisado por pares]

Springer

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  • Título:
    Tunable upconversion luminescence and enhanced temperature sensitive properties from Bi.sub.2Ti.sub.2O.sub.7:Yb.sup.3+/Er.sup.3+ nanofibers
  • Autor: Xu, Meimei ; Ge, Wanyin ; Tian, Ye ; Wu, Yuanting ; Li, Yongxiang
  • Assuntos: Sensors
  • É parte de: Journal of materials science, 2021-05, Vol.56 (15), p.9302
  • Descrição: Unraveling the morphology of the sensing material is of paramount in realizing the better sensitivity. For this purpose, the Bi.sub.2Ti.sub.2O.sub.7:Yb.sup.3+/Er.sup.3+ nanofibers (0:1, 4:1, 8:1, 15:1, 20:1) and nanoparticles were synthesized via an electrospinning and sol-gel route, respectively. Subsequently, the temperature sensing properties based on the fluorescence intensity ration were studied within Bi.sub.2Ti.sub.2O.sub.7:Yb.sup.3+/Er.sup.3+ nanofibers and particles in the range of 298-538 K. The maximum relative sensitivity value was 1.53% at 298 K for Bi.sub.2Ti.sub.2O.sub.7:Yb.sup.3+/Er.sup.3+ (4:1) nanofibers. As was expected, Bi.sub.2Ti.sub.2O.sub.7:Yb.sup.3+/Er.sup.3+ nanofibers demonstrated an enhanced temperature sensitivity than that of the individual nanoparticles, exhibiting the champion values among all the reported Yb-Er pairs. To exploit the potential for practical application, the Bi.sub.2Ti.sub.2O.sub.7:Yb.sup.3+/Er.sup.3+ nanofibers were utilized to measure the surface temperature of a heating object. An improved surface temperature resolution was realized compare with the infrared thermal camera. All the presented results confirmed that the novel upconversion Bi.sub.2Ti.sub.2O.sub.7:Yb.sup.3+/Er.sup.3+ nanofibers could be an outstanding candidate for temperature sensors. Our work has proven to be a reliable alternative for exploring contactless temperature sensing at a higher resolution. Graphical abstract
  • Editor: Springer
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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