Wydział Chemii

Robert Pązik

Katarzyna Zawisza

Adam Watras

Kinga Maleszka-Bagińska

Philippe Boutinaud

Rachid Mahiou

Przemysław J. Dereń

2012

Journal of Materials Chemistry

22

22651-22657

10.1039/C2JM34687G

Naukowa

Angielski

Artykuł

La₂CaB₁₀O₁₉ powders doped with Eu³⁺ ions were synthesized using a citric route for the first time. The La₂CaB₁₀O₁₉ powders doped with Eu³⁺ ions were synthesized using citric route for the first time. The crystal structure, morphology and chemical composition of the engineered compounds were characterized in details using X-ray diffraction (XRD), Raman spectroscopy, transmission and scanning electron microscopy (TEM and SAED) and X-ray fluorescence (EDX). The photoluminescence properties (emission, excitation, excited state dynamics) were evaluated in the temperature range 300–700 K. We have found that the thermal dependency of Eu³⁺ emission is quite complex in LCBO. Four different temperature zones were found as well as contribution of a second emitter at higher temperature. The thermal quenching mechanisms of Eu³⁺ luminescence in this host lattice are addressed.

https://doi.org/10.1039/C2JM34687G

https://www.rsc.org/