Defect site quenching of the 5D0 excited state of Eu3+ in the hexachloroelpasolite Cs2NaEuCl6

Matthew R. Duckett; Colin D. Flint

doi:10.1117/12.293433

1 November 1997 Defect-site quenching of the ⁵D₀ excited state of Eu³⁺ in the hexachloroelpasolite Cs₂NaEuC_l6

Matthew R. Duckett, Colin D. Flint

Proceedings Volume 3176, Tunable Solid State Lasers; (1997) https://doi.org/10.1117/12.293433
Event: Tunable Solid State Lasers, 1996, Wroclaw, Poland

Abstract

The luminescence decay curves of the ⁵D₀ excited state of the cubic hexachloroelpasolite Cs₂NaEuCl₆ have been measured at 80 and 295 K for samples prepared by several methods. The decay curves are non-exponential and the rate of decay depends on the method of preparation. This is attributed to energy migration between the majority sites followed by energy transfer to defect sites associated with the presence of oxide ions in the lattice. A new method of preparation is devised which minimizes the concentration of oxide and other impurities. Crystals prepared by this method have lifetimes that are several times longer than that prepared by the standard procedure.

Citation Download Citation

Matthew R. Duckett and Colin D. Flint "Defect-site quenching of the ⁵D₀ excited state of Eu³⁺ in the hexachloroelpasolite Cs₂NaEuC_l6", Proc. SPIE 3176, Tunable Solid State Lasers, (1 November 1997); https://doi.org/10.1117/12.293433

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