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Electrical effects of metal nanoparticles embedded in ultra-thin colloidal quantum dot films

Beck, Fiona; Garcia de Arquer, F. P; Bernechea, M; Konstantatos, G


Plasmonic light trapping can increase the absorption of light in thin semiconductor films. We investigate the effect of embedded metal nanoparticle (MNP) arrays on the electrical characteristics of ultra-thin PbS colloidal quantum dot (CQD) photoconductors. We demonstrate that direct contact with the metalnanoparticles can suppress or enhance the photocurrent depending on the work function of the metal, which dominates the optical effects of the particles for ultra-thin films. These results...[Show more]

CollectionsANU Research Publications
Date published: 2012-07-23
Type: Journal article
Source: Applied Physics Letters
DOI: 10.1063/1.4738993


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