6533b86ffe1ef96bd12cd15a
RESEARCH PRODUCT
Temperature influence on NaLaF 4 :Er 3+ green luminescence
J. Grubesubject
Condensed Matter::OtherInfraredChemistryKineticsDopingBiophysicsAnalytical chemistryPhysics::Optics02 engineering and technologyGeneral ChemistryCrystal structure010402 general chemistry021001 nanoscience & nanotechnologyCondensed Matter Physics01 natural sciencesBiochemistryAtomic and Molecular Physics and OpticsSpectral line0104 chemical sciencesCondensed Matter::Materials ScienceLattice (order)Physics::Atomic and Molecular Clusters0210 nano-technologyLuminescenceExcitationdescription
Abstract Er 3+ doped NaLaF 4 is a promising material for up-conversion luminescence applications due to low phonon energy and multisite nature of the crystalline lattice. In this work, luminescence processes in NaLaF 4 :Er 3+ materials have been studied at different temperatures. Spectra and decay kinetics of the green luminescence were measured under excitation to 4 F 7/2 state. Analysis of the green luminescence excitation spectra, the luminescence spectra and the luminescence decay kinetics at different temperatures reveals that the observed single green luminescence spectra at room temperature are related to overlapping of the green luminescence excitation bands from erbium ions located at non-equivalent lattice sites. In addition, spectroscopic data obtained from the green and the infrared luminescence spectra at different temperatures suggest that both 4 S 3/2 and 2 H 11/2 states are involved in energy transfer between erbium ions, leading to concentration quenching of the green luminescence.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-11-01 | Journal of Luminescence |