Influence of adding rare earth ions on Tb(III) fluorescence in Tb(III)—salicylic acid complexes

Abstract The influence of Ce(III) on the fluorescence of Tb(III) and the ligand as well as the enhanced fluorescence of Tb(III) by Ln(III) (LnY, La, Gd, Lu) in Tb(III)SA (SA, salicylic acid) complex solutions was observed. It was found that the Ce(III) ion quenched the SA ligand fluorescence and increased the fluorescence of Tb(III) in ethanol solutions of the complexes and that Ln(III) ions increased the Tb(III) fluorescence intensively as well.