A simple, compact, low-cost, highly efficient thermometer based on green fluorescence of Er3 +/Yb3 +-codoped NaYF4 microcrystals

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Ning Yuan
  • Hong-Xue Sun
  • Dan-Dan Ju
  • Da-Yu Liu
  • Zi-Bo Zhang
  • Wing-Han Wong
  • Feng Song
  • Dao-Yin Yu
  • De-Long Zhang

Detail(s)

Original languageEnglish
Pages (from-to)177-181
Journal / PublicationMaterials Science and Engineering C
Volume81
Online published31 Jul 2017
Publication statusPublished - 1 Dec 2017

Abstract

We developed a highly efficient optical thermometer based on intensity ratio of upconversion green fluorescence of Er3 +/Yb3 +-codoped NaYF4 microcrystals. The sensor consists simply of a 980 nm laser diode, one narrow-band interference filter, two lenses, one Si-photocell and one multimeter, while being without use of spectrometer and additional electronics. The device not only has a simple, compact structure (hence a low cost), but also displays highly efficient sensing performance, characterized by large signal-to-noise ratio due to strong fluorescence intensity, high thermal resolution and sensitivity, which have the values 1.3 K and 1.24 × 10− 2 K− 1, respectively, at the physiological temperature 310 K. The excellent sensing performance of the device was further confirmed by the results of the measurements repeated using a spectrometer. The thermometer is highly generalized that can be applied to other luminescent materials, and shows great potential for the physiological temperature sensing in biological tissues and cells.

Research Area(s)

  • Er3 +/Yb3 +-codoped NaYF4 microcrystals, Fluorescence intensity ratio (FIR), Green upconversion, Thermometer

Citation Format(s)

A simple, compact, low-cost, highly efficient thermometer based on green fluorescence of Er3 +/Yb3 +-codoped NaYF4 microcrystals. / Yuan, Ning; Sun, Hong-Xue; Ju, Dan-Dan et al.
In: Materials Science and Engineering C, Vol. 81, 01.12.2017, p. 177-181.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review