Exciton-plasmon interactions in quantum dot-gold nanoparticle structures

Nano Lett. 2012 Aug 8;12(8):4260-4. doi: 10.1021/nl301917d. Epub 2012 Jul 3.

Abstract

We present a self-assembly method to construct CdSe/ZnS quantum dot-gold nanoparticle complexes. This method allows us to form complexes with relatively good control of the composition and structure that can be used for detailed study of the exciton-plasmon interactions. We determine the contribution of the polarization-dependent near-field enhancement, which may enhance the absorption by nearly two orders of magnitude and that of the exciton coupling to plasmon modes, which modifies the exciton decay rate.