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Title: Mn4+-doped magnesium titanate : a promising phosphor for self-referenced optical temperature sensing
Authors : Venturini, Francesca
Baumgartner, Michael
Borisov, Sergey
Published in : Sensors
Volume(Issue) : 18
Issue : 2/668
Publisher / Ed. Institution : MDPI
Issue Date: 2018
License (according to publishing contract) : CC BY 4.0: Namensnennung 4.0 International
Type of review: Peer review (Publication)
Language : English
Subjects : Phosphor; Optical sensor; Temperature sensor; Manganese; Luminescence
Subject (DDC) : 540: Chemistry
600: Technology
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.
Departement: School of Engineering
Organisational Unit: Institute of Applied Mathematics and Physics (IAMP)
Publication type: Article in scientific Journal
DOI : 10.3390/s18020668
ISSN: 1424-8220
Appears in Collections:Publikationen School of Engineering

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