Fluorescence Properties Of Self Assembled Colloidal Supraparticles From Cdse/Cds/Zns Nanocrystals

We first report the synthesis of supraparticles with a mean diameter of 130 nm consisting in a compact self-assembly of colloidal CdSe/CdS/ZnS nanocrystals encapsulated in a silica shell. This provides a system with robust optical properties such as a high quantum efficiency, a stable and Poissonian emission at room temperature. Additionally, enhancement of the photoluminescence decay rate through Forster resonance energy transfer is observed.