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Showing 1 to 9 of 9 for “"Eu2O3"”.
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Nonlinear Luminescence Quenching in Eu2O3
… investigations into the spectra and dynamics of Eu2O3, an apparent saturation dip in the excitation spectra of nano-sized Eu2O3 particles was observed. This thesis describes the investigation into the nature of the saturation effect. The samples studied using luminescent spectroscopy included …
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Green synthesis of Europium (III) Oxide nanoparticles using Hibiscus sabdariffa flower extract
… and optical properties of Europium (III) oxide (Eu2O3) nanocrystals synthesized for the first time by a completely green physical-chemistry process using Hibiscus sabdariffa (HB) natural flower extract and Europium nitrate pentahydrate (Eu(NO3)3.5H2O) salts as a precursor. The HB natural extract …
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Tuning Strong Correlated Properties in EuTiO3 Thin Films Grown by Pulsed Laser Deposition
… oxide. After various exploration, (ETO)0.5-(Eu2O3)0.5 was successfully fabricated on (0 0 1)-oriented STO under careful control of growth pressure, substrate temperature and laser repetition rate. The optimized growth condition (laser repletion rate of 3 Hz, substrate temperature of 710 oC …
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Particle Size Dependence on the Luminescence Spectra of Eu3+:Y2O3 and Eu3+:CaO
… at most concentrations: cubic CaO and monoclinic Eu2O3. Results showed that the monoclinic Eu2O3 phase could be reduced by 95% by annealing at 800 0C for 30 minutes without particle growth. Since the Eu3+ ion and the Y3+ ion are isovalent, the substitution of a Eu3+ ion into Y2O3 is considered a …
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Production of Ultra-Thick Sodium Nitroprusside Absorbers for the Determination of Mössbauer Transmission Integral Parameters.
… technique, when applied to 151Eu (source) and EU2O3 (absorber) to determine their recoil-free fractions, produced internally consistent values for these parameters. However, verification of the values obtained was not easily accomplished due to the lack of literature for comparison. It has been …
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Visible light emission from Eu-containing Si-based materials
… of Eu compounds by thermal processing of Eu2O3 thin films deposited by RF magnetron sputtering on Si substrates. It has been shown that annealing processes in N2 ambient lead to a complex reactivity at the Eu2O3/Si interface, which induces from Eu3+ to Eu2+ reduction and formation of …
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Transition Metal Complexes Anchored on Europium Oxide Nanoparticles
… of previously reported analogous systems. Eu2O3 nanoparticles modified with [Rh(deeb)2Cl2]+ exhibit minimal to no energy transfer from emission spectra, and a reduction in the lifetime at 77K could be due to the rhodium complex preventing the excitation of Eu3+. Upon attachment of the Ir …
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Solid-State NMR of Metallic and Paramagnetic Systems
… have been performed: 1) The 17O NMR of Sm2O3, Eu2O3 and Sm/Eu-substituted CeO2, for which the lanthanide ions induce paramagnetic shifts with unusual temperature dependences due to the presence of low-lying excited electronic states. The spectra of the monoclinic polymorphs of the sesquioxides …
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Luminescent Lanthanide Complexes and Nanoparticles for Biological Applications
… imaging applications. Sensitizer-capped Eu2O3 nanoparticles (NPs) were synthesized and functionalized with different aromatic ligands to enhance Eu(III)-centered emission and excited state lifetimes in aqueous solutions and tissue lysate. A family of common aromatic ligands was …