Analysis of charge transport in arrays of 28 kDa nanocrystal gold molecules

Autor: Quinn, Aidan J., BiancardoPresent Address: Risø National Laboratory, Matteo, Center, Danish Polymer, POL-124, Roskilde, DK-4000, Floyd, Liam, Belloni, Maura, Ashton, Peter R., Preece, Jon A., Bignozzi, Carlo A., Redmond, Gareth
Zdroj: Journal of Materials Chemistry; 2005, Vol. 15 Issue: 41 p4403-4407, 5p
Abstrakt: Arrays of 28 kDa nanocrystal gold molecules behave as weakly-coupled molecular solids comprising discrete nanoscale metallic islands separated by insulating ligand barriers. The key parameters which are found to dominate charge transport are a the single-electron nanocrystal charging energy, governed by the core diameter, the dielectric properties of the passivating ligands and classical electrostatic coupling between neighbouring cores; b the inter-nanocrystal tunnel barrier resistance that arises from the insulating nature of the ligand bilayers that separate the cores; and c the dimensionality of the network of current-carrying paths.
Databáze: Supplemental Index