Emission lifetimes of europium-doped pyrochlores for phosphor thermometry

Rachael A. Hansel; S. K. Desai; S. W. Allison; A. L. Heyes; D. G. Walker

doi:10.1063/1.3275871

Emission lifetimes of europium-doped pyrochlores for phosphor thermometry

Rachael A. Hansel, S. K. Desai, S. W. Allison, A. L. Heyes, D. G. Walker

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

Abstract

The luminescent lifetime of La₂Zr₂O₇ and La₂Hf₂O₇ has been determined as a function of temperature. We have shown that the luminescence of both materials can be used to determine the temperature of a surface up to 1073 K. The results are qualitatively explained via multiphonon emission. Phonon energies and the number of phonons needed to cross the energy gap are estimated. The results are useful in the design of phosphors for noncontact thermometry in high-temperature applications.

Original language	English
Article number	016101
Number of pages	3
Journal	Journal of Applied Physics
Volume	107
Issue number	1
DOIs	https://doi.org/10.1063/1.3275871
Publication status	Published - 7 Jan 2010
Externally published	Yes

Keywords

phonons
x-ray diffraction
temperature measurement
luminescence
luminescent materials

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10.1063/1.3275871

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abstract = "The luminescent lifetime of La2Zr2O7 and La2Hf2O7 has been determined as a function of temperature. We have shown that the luminescence of both materials can be used to determine the temperature of a surface up to 1073 K. The results are qualitatively explained via multiphonon emission. Phonon energies and the number of phonons needed to cross the energy gap are estimated. The results are useful in the design of phosphors for noncontact thermometry in high-temperature applications.",

keywords = "phonons, x-ray diffraction, temperature measurement, luminescence, luminescent materials",

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AU - Hansel, Rachael A.

AU - Desai, S. K.

AU - Allison, S. W.

AU - Heyes, A. L.

AU - Walker, D. G.

PY - 2010/1/7

Y1 - 2010/1/7

N2 - The luminescent lifetime of La2Zr2O7 and La2Hf2O7 has been determined as a function of temperature. We have shown that the luminescence of both materials can be used to determine the temperature of a surface up to 1073 K. The results are qualitatively explained via multiphonon emission. Phonon energies and the number of phonons needed to cross the energy gap are estimated. The results are useful in the design of phosphors for noncontact thermometry in high-temperature applications.

AB - The luminescent lifetime of La2Zr2O7 and La2Hf2O7 has been determined as a function of temperature. We have shown that the luminescence of both materials can be used to determine the temperature of a surface up to 1073 K. The results are qualitatively explained via multiphonon emission. Phonon energies and the number of phonons needed to cross the energy gap are estimated. The results are useful in the design of phosphors for noncontact thermometry in high-temperature applications.

KW - phonons

KW - x-ray diffraction

KW - temperature measurement

KW - luminescence

KW - luminescent materials

UR - http://www.scopus.com/inward/record.url?scp=75649144758&partnerID=8YFLogxK

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JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 1

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ER -

Emission lifetimes of europium-doped pyrochlores for phosphor thermometry

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Keywords

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