4.6 Article

Upconversion luminescence and temperature sensing properties of Er3+/Yb3+ doped double-perovskite Ba2LaNbO6 phosphor

Journal

JOURNAL OF LUMINESCENCE
Volume 242, Issue -, Pages -

Publisher

ELSEVIER
DOI: 10.1016/j.jlumin.2021.118569

Keywords

Upconversion luminescence; Temperature sensing; Double-perovskite; Ba2LaNbO6

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Funding

  1. National Natural Science Foundation of China [11864015]
  2. Natural Science Foundation of Jiangxi Province of China [20202BAB204009]
  3. Scientific Research Foundation for Universities from the Education Bureau of Jiangxi Province [GJJ170490, GJJ190453]

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Ba2LaNbO6:Er3+/Yb3+ phosphor demonstrates excellent upconversion luminescence and temperature sensing behavior, serving as a potential alternative for temperature sensing applications.
Oxide-based double-perovskite upconversion materials exhibit outstanding photostability and excellent upconversion luminescence (UCL), and thus have drawn increasing attention in temperature sensing field. Herein, a promising UCL phosphor Ba2LaNbO6 doped with Er3+ and Yb3+ was prepared by a facile high-temperature solidstate method. The Ba2LaNbO6:Er3+/Yb3+ phosphor with a double-perovskite structure possess two green and one red emissions. Based on the fluorescence intensity ratio technique, the maximum sensitivity of SA and SR are found to be 34.91 x 10(-4) K-1 at 472.9 K and 146.31 x 10(-4) K-1 at 313.5 K for the I500-540/I625-720. Excellent UCL and temperature sensing behavior of as-prepared Ba2LaNbO6 phosphor doped with Er3+ and Yb3+ may be as an alternative candidate for temperature sensing.

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