<abstract xmlns="http://www.w3.org/1999/xhtml">In this work, NaLaF4 doped with Er3+ of different concentrations was synthesized. The luminescence spectrum for NaLaF4:Er3+ (0.2 mol%) at 489 nm excitation reveals characteristic Er3+ luminescence bands in the green (540 nm), red (660 nm) and infrared (980 nm) spectral regions. The green luminescence band originated from the 4S3/2 → 4I15/2 transition is the most intensive one in the luminescence spectrum. As the concentration of the activator is increasing, the intensity of all luminescence bands changes significantly. The super-linear increase of the infrared luminescence intensity with increasing Er3+ concentration as well as the quenching of green luminescence at the concentrations exceeding 2 mol% can be attributed to the cross-relaxation process between the activator ions.</abstract>

In this work, NaLaF4 doped with Er3+ of different concentrations was synthesized. The luminescence spectrum for NaLaF4:Er3+ (0.2 mol%) at 489 nm excitation reveals characteristic Er3+ luminescence bands in the green (540 nm), red (660 nm) and infrared (980 nm) spectral regions. The green luminescence band originated from the 4S3/2 → 4I15/2 transition is the most intensive one in the luminescence spectrum. As the concentration of the activator is increasing, the intensity of all luminescence bands changes significantly. The super-linear increase of the infrared luminescence intensity with increasing Er3+ concentration as well as the quenching of green luminescence at the concentrations exceeding 2 mol% can be attributed to the cross-relaxation process between the activator ions.

Impact of Er3+ Concentration on Luminescence in NaLaF4

Institute of Solid State Physics, University of Latvia, 8 Kengaraga Str., LV-1063, Riga, LATVIA

Latvian Journal of Physics and Technical Sciences

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Impact of Er Concentration on Luminescence in NaLaF

In this work, NaLaF4 doped with Er3+ of different concentrations was synthesized. The luminescence spectrum for NaLaF4:Er3+ (0.2 mol%) at 489 nm excitation...

Impact of Er³⁺ Concentration on Luminescence in NaLaF₄

Pubblicato online: 16 lug 2014

Pagine: 42 - 50

DOI: https://doi.org/10.2478/lpts-2014-0018

© by J. Grube

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.