Mn4+-Doped magnesium titanate-a promising phosphor for self-referenced optical temperature sensing

Francesca Venturini, Michael Baumgartner, Sergey M. Borisov

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Phosphors based on magnesium titanate activated with Mn4+ ions are of great interest because, when excited with blue light, they display a strong red-emitting luminescence. They are characterized by a luminescence decay which is strongly temperature dependent in the range from -50 °C to 150 °C, making these materials very promising for temperature sensing in the biochemical field. In this work, the optical and thermal properties of the luminescence of Mg2TiO4 are investigated for different Mn4+ doping concentrations. The potential of this material for temperature sensing is demonstrated by fabricating a fiber optic temperature microsensor and by comparing its performance against a standard resistance thermometer. The response of the fiber optic sensor is exceptionally fast, with a response time below 1 s in the liquid phase and below 1.1 s in the gas phase.

Original languageEnglish
Article number668
JournalSensors (Switzerland)
Volume18
Issue number2
DOIs
Publication statusPublished - 24 Feb 2018

Fingerprint

Phosphors
phosphors
Magnesium
magnesium
Luminescence
Temperature
luminescence
fiber optics
Thermometers
resistance thermometers
Microsensors
temperature
Fiber optic sensors
Fiber optics
Reaction Time
liquid phases
Thermodynamic properties
Optical properties
thermodynamic properties
Hot Temperature

Keywords

  • Luminescence
  • Manganese
  • Optical sensor
  • Phosphor
  • Temperature sensor

ASJC Scopus subject areas

  • Analytical Chemistry
  • Atomic and Molecular Physics, and Optics
  • Biochemistry
  • Instrumentation
  • Electrical and Electronic Engineering

Cite this

Mn4+-Doped magnesium titanate-a promising phosphor for self-referenced optical temperature sensing. / Venturini, Francesca; Baumgartner, Michael; Borisov, Sergey M.

In: Sensors (Switzerland), Vol. 18, No. 2, 668, 24.02.2018.

Research output: Contribution to journalArticleResearchpeer-review

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