This talk will describe the mechanism and kinetics of growth of colloidal CdSe quantum dots through the quantized fusion of CdSe clusters. The cluster fusion mechanism is competitve with monomer-driven growth and cluster dissolution for a specific range of ligand concentration, ligand binding strength, and temperature. The origin of the activation barrier for cluster fusion -- thought to be ligand desorption -- will be discussed.

Growth of colloidal nanocrystals by fusion of "magic"-sized clusters

244th National Meeting (2012)

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