Ho3+ codoping of YAG:Ce: Acceleration of Ce3+ decay kinetics by energy transfer

Ho3+ codoping of YAG:Ce induces an acceleration of Ce3+ decay. This is caused by a non-radiative energy transfer from Ce3+ to Ho3+ which is enabled by a multipolar interaction between the ions. The photoluminescence decay characteristics were examined in a wide range of Ho3+ concentrations and 1/e d...

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Bibliographic Details
Published in:Journal of luminescence 2019-09, Vol.213, p.469-473
Main Authors: Páterek, Juraj, Pokorný, Martin, Sýkorová, Silvia, Stehlík, Aleš, Polák, Jan, Houžvička, Jindřich, Nikl, Martin
Format: Article
Language:English
Subjects:
Acceleration of decay
Er3+codoping
Förster-Dexter model
Ho3+codoping
Non-radiative energy transfer
YAG:Ce
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Summary:Ho3+ codoping of YAG:Ce induces an acceleration of Ce3+ decay. This is caused by a non-radiative energy transfer from Ce3+ to Ho3+ which is enabled by a multipolar interaction between the ions. The photoluminescence decay characteristics were examined in a wide range of Ho3+ concentrations and 1/e decay time of Ce3+ was accelerated more than six times. The decay curves were analyzed using the Förster-Dexter model. The critical concentration of Ho3+, useful for quantitative decay time tailoring, was calculated. These results of the decay evaluation of YAG:Ce codoped with Ho3+ were compared to those obtained from the recent study on YAG:Ce codoped with Er3+ [1]. •The inherent decay time of Ce3+ in YAG host is shortened by Ho3+ codoping.•The effect of Ho3+ codoping of YAG:Ce studied in a wide range of Ho3+ concentrations.•The Ce3+ decay kinetics were analyzed using Förster-Dexter model.•The critical concentration of Ho3+ in YAG:Ce was calculated.•The results compared to that obtained in the study on Er3+ codoped of YAG:Ce [1].
ISSN:0022-2313
1872-7883
DOI:10.1016/j.jlumin.2019.05.056