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- Title
Mn<sup>4+</sup>-Doped Magnesium Titanate—A Promising Phosphor for Self-Referenced Optical Temperature Sensing.
- Authors
Venturini, Francesca; Baumgartner, Michael; Borisov, Sergey M.
- 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.
- Subjects
MANGANESE; DOPED semiconductors; MAGNESIUM compounds; PHOSPHORS; TEMPERATURE sensors
- Publication
Sensors (14248220), 2018, Vol 18, Issue 2, p668
- ISSN
1424-8220
- Publication type
Article
- DOI
10.3390/s18020668