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Efficient Sensitization of Eu<sup>3+</sup> Emission by Tb<sup>3+</sup> in Ba<sub>3</sub>La(PO<sub>4</sub>)<sub>3</sub> under VUV-UV Excitation: Energy Transfer and Tunable Emission
117
Citations
27
References
2012
Year
Ultraviolet LightEngineeringEnergy ConversionExcitation Energy TransferEfficient SensitizationChemistryLuminescence PropertyVuv-uv ExcitationChemical EngineeringPhosphorescence ImagingOptical PropertiesHealth SciencesElectrical EngineeringPhotoluminescencePhotochemistryRadiative AbsorptionEnergy TransferExcitation EnergyUv-vis SpectroscopyFluorescence DecaysSpectroscopyApplied PhysicsTunable EmissionOptoelectronicsEmissivity
The work presents the VUV-UV–vis photoluminescence of Ba3La(PO4)3:Ln3+ (Ln = Tb, Eu) prepared by a high-temperature solid-state reaction route. The excitation and emission spectra, the fluorescence decays, and the time-resolved emission spectra were measured and discussed in detail. The results reveal that Tb3+ can efficiently transfer excitation energy to Eu3+ via its 5d and 4f states and therefore sensitizes Eu3+ emission under VUV-UV excitation, resulting in tunable emission in a large color gamut.
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