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Temperature-dependent luminescence of gallium-substituted YAG:Ce

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Abstract

The temperature-dependent lifetime of trivalent cerium was determined in (Y1−xCex)3Al2.5Ga2.5O12 (where x = 0.1 and 0.2) over a temperature range of 20−120 °C. In both samples, the quenching temperature is significantly lower compared to (Y1−xCex)3Al5O12. The difference in quenching temperatures is explained by evaluating the changes in the lattice, which occur as a result of substituting the Al3+ for Ga3+. The information presented in this report is useful for future design of phosphors for use as non-contact temperature sensors.

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Authors and Affiliations

  1. Vanderbilt University, Nashville, TN, 37212, USA

    Rachael Hansel & Greg Walker

  2. Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN, 37831, USA

    Steve Allison

Authors
  1. Rachael Hansel
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  2. Steve Allison
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  3. Greg Walker
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Correspondence to Rachael Hansel.

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Hansel, R., Allison, S. & Walker, G. Temperature-dependent luminescence of gallium-substituted YAG:Ce. J Mater Sci 45, 146–150 (2010). https://doi.org/10.1007/s10853-009-3906-9

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  • DOI: https://doi.org/10.1007/s10853-009-3906-9

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