Highly luminescent monolayer films with rare earth emitters in plasmonic environment*

Amphiphilic complexes of Re³⁺ TTA where Re is a rare earth ion (Eu, Nd, Er) are developed for controlled deposition of monolayer and multilayer films on plasmonic surfaces, which provide an opportunity for controlling the emission rate and radiation patterns of electric and magnetic emitters. We show that EuTTA monolayer films are not fully quenched when deposited directly onto metal on contrary to the theoretical predictions. Efficiency of surface plasmon polariton excitation by both electric and magnetic dipoles is enhanced in comparison with thicker films.  The effects are discussed theoretically considering decoupling of plasmonic modes due to the surface geometry.