Modified emission of extended light emitting layers by selective coupling to collective lattice resonances

We demonstrate that the coupling between light emitters in extended polymer layers and modes supported
by arrays of plasmonic particles can be selectively enhanced by accurate positioning of the emitters in regions
where the electric field intensity of a given mode is maximized. The enhancement, which we measure to reach
up to 70%, is due to the improved spatial overlap and coupling between the optical mode and emitters. This
improvement of the coupling leads to a modification of the emission spectrum and the luminous efficacy of the
sample.