Temperature sensing from the emission rise times of Eu 3+ in SrY 2 O 4

The emission rise time of Eu 3+ -doped SrY 2 O 4 was investigated in the temperature range of 20–200 °C for application in luminescence thermometry. After pulsed excitation, the energy transfer between the adjacent Eu 3+ ions causes a emission build-up from the 5 D 0 level of Eu 3+ and a notable emi...

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Bibliographic Details
Published in:Physical chemistry chemical physics : PCCP 2014, Vol.16 (46), p.25636-25641
Main Authors: Lojpur, V., Antić, Ž., Dramićanin, M. D.
Format: Article
Language:English
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Summary:The emission rise time of Eu 3+ -doped SrY 2 O 4 was investigated in the temperature range of 20–200 °C for application in luminescence thermometry. After pulsed excitation, the energy transfer between the adjacent Eu 3+ ions causes a emission build-up from the 5 D 0 level of Eu 3+ and a notable emission rise occurs prior to decay. The emission rise-time values linearly decrease with temperature, providing an absolute sensitivity of 0.66 μs °C −1 and a maximal relative sensitivity of 5.53% °C −1 at 200 °C, for samples containing 0.5 at% Eu 3+ ions. It is shown that the time after excitation at which emission reaches a maximum (time-to-max) can also be exploited for temperature sensing, since it is easily measurable and shows a linear dependence with temperature.
ISSN:1463-9076
1463-9084
DOI:10.1039/C4CP04141K