Energy Transfer and Up-Conversion in the Erbium Elpasolites Cs_{2}NaEr_{x}Y_{1-x}Cl_{6}

• Authors: M. Campbell , C. Flint
• Languages of publication: EN

Abstracts

EN

The luminescence decay curves from the ^{4}F_{9/2} and ^{4}I_{9/2} states of the cubic hexachloroelpasolite crystals Cs_{2}NaEr_{x}Y_{1-x}Cl_{6} (x = 0.001÷1) have been measured over the temperature range 10-300 K. The ^{4}I_{9/2} state undergoes an electric dipole vibronic-electric dipole vibronic cross-relaxation process at 300 K, but this mechanism is inefficient below 165 K. Excitation into the ^{4}F_{9/2} state, results in emission in the green, blue and ultra violet regions. The up-conversion processes which could account for the ultraviolet emission are discussed.

Keywords

EN

13.40.Hq; 31.70.Hq; 34.30.+h; 61.72.Ss; 78.55.Hx

Discipline

• 31.70.Hq: Time-dependent phenomena: excitation and relaxation processes, and reaction rates(for chemical kinetics aspects, see 82.20.Rp)
• 13.40.Hq: Electromagnetic decays
• 78.55.Hx: Other solid inorganic materials

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1996
• Volume: 90
• Issue: 1
• Pages: 151-160

Dates

published

1996-07

Contributors

author

M. Campbell

• Laser Laboratory, Department of Chemistry, Birkbeck College, University of London, 29 Gordon Square, London, WC1H 0PP, U.K.

author

C. Flint

• Laser Laboratory, Department of Chemistry, Birkbeck College, University of London, 29 Gordon Square, London, WC1H 0PP, U.K.

Identifiers

DOI

10.12693/APhysPolA.90.151