P. Geiregat, A. Omari, Y. Justo, D. van Thourhout, Z. Hens
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Absorption enhancement in 2D nanocrystal superlattices through near-field dipolar coupling: A novel optical phenomenon at the nanoscale
We demonstrate giant and broadband enhancement of the nanocrystal absorption cross section in close packed nanocrystal superlattices, which is the first report on a collective optical phenomenon in this type of self-assembled metamaterials to date.