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Highly sensitive fluorescence intensity ratio thermometry by breaking the thermal correlation of two emission centers

  • Yuan Zhou
  • , Leipeng Li
  • , Feng Qin
  • , Zhiguo Zhang*
  • *Corresponding author for this work
  • School of Physics, Harbin Institute of Technology
  • Harbin Institute of Technology

Research output: Contribution to journalArticlepeer-review

Abstract

Fluorescence intensity ratio thermometry based on hybrid Eu3+-doped GdVO4 and Cr3+-doped Al2O3 particles has been studied. We aim at overcoming the limitation that the relative sensitivity (Sr) decreases with the square of temperature owing to the thermal relation between the two emitting levels in one matrix in terms of the Boltzmann distribution law. The design of hybrid Eu3+-doped GdVO4 and Cr3+-doped Al2O3 particles constructs two emission bands with opposite temperature dependences. Furthermore, the Sr makes a breakthrough by obtaining greater sensitivity in a high-temperature range; the maximum value obtained is 1.4%K−1 at 633 K.

Original languageEnglish
Pages (from-to)4598-4601
Number of pages4
JournalOptics Letters
Volume44
Issue number18
DOIs
StatePublished - 15 Sep 2019
Externally publishedYes

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