6533b7d4fe1ef96bd1261e26
RESEARCH PRODUCT
Europium(III)-doped A(2)Hf(2)O(7) (A = Y, Gd, Lu) nanoparticles: Influence of annealing temperature, europium(III) concentration and host cation on the luminescent properties
Miroslav D. DramićaninKatarina VukovićKrisjanis SmitsJelena PapanDragana JovanovicVesna ĐOrđevićsubject
Materials scienceLuminescenceAnnealing (metallurgy)Rare earth hafnateAnalytical chemistryMineralogyNanoparticlechemistry.chemical_elementPhosphorJudd-Ofelt02 engineering and technologyEuropium(III)010402 general chemistry01 natural sciencesInorganic ChemistryElectrical and Electronic EngineeringPhysical and Theoretical ChemistrySpectroscopyOrganic ChemistryDopingPhosphor021001 nanoscience & nanotechnologyAtomic and Molecular Physics and Optics0104 chemical sciencesElectronic Optical and Magnetic MaterialschemistryQuantum efficiencyParticle size0210 nano-technologyLuminescenceEuropiumdescription
The detailed analyses of structure and luminescence of europium(III)-doped A(2)Hf(2)O(7) (A = Y, Gd, Lu) nanoparticles is presented. Samples were prepared by time and cost effective combustion method that utilize polyethylene glycol both as a chelating agent and as a fuel, with different europium(III) concentrations (from 1 to 12 at.%), annealed at temperatures ranging from 800 to 1400 degrees C, and with alternating A(3+) cation in the A(2)Hf(2)O(7) host. Then, structural variations between materials were analysed by Xray diffraction and structural refinement, while the changes in the luminescence were assessed from the Judd-Ofelt analyses of emission spectra. Nanoparticles prepared at the lowest temperature (800 degrees C) had the smallest particle size of similar to 6 nm and showed the highest quantum efficiency when doped with 1 and 2 at.% of europium(III). Radiative transition rate and quantum efficiency of emission showed Lu2Hf2O7 GT Gd2Hf2O7 GT Y2Hf2O7 trend. (C) 2016 Elsevier B.V. All rights reserved. 4th International Conference on the Physics of Optical Materials and CI Devices (ICOM), Aug 31-Sep 04, 2015, Budva, Montenegro
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-11-01 |