Surface plasmon-polaritons (SPPs) in a multilayerstructure consisting of a metallic film and one or more layers ofnanocrystal (NC) quantum dots (QDs) are studied theoretically. Itis shown that there is a resonance coupling between the plasmonpolaritonspropagating along the metal/NC-layer interface andexcitons confined in the dots, which produces a considerable effecton the optical properties of the structure unless the dispersion ofthe QD size is too large. Using a transfer matrix formalism,multilayer structures consisting of NC composite and metallic films are considered and it is demonstrated that the couplingextends over several layers constituting the structure. It can be explored in order to selectively excite QDs of different size bymaking a layer-by layer assembled NC planar structure and using an attenuated total reflection (ATR) configuration for the SPPenhancedexcitation of the dots. In particular, it opens the possibility to control the relative intensity of light of different color,emitted by the QDs of different size.
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