Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 4, Issue 9, Pages 1542-1548Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/b107770h
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Although luminescent complexes of lanthanide ions and organic ligands have been studied intensively, relatively little attention has been paid to the natural (or 'radiative') lifetime of the lanthanide centered luminescent state in these systems. Here, the applicability of the well-known Judd-Ofelt theory to the emissive properties of Eu3+ complexes is investigated. Moreover, it is demonstrated experimentally that the radiative lifetime of the D-5(0) excited state of Eu3+ can be calculated directly from its corrected emission spectrum, without using Judd-Ofelt theory. We also discuss briefly the possibility of finding the natural lifetimes of lanthanide ions other than Eu3+.
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