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Highly efficient luminescence from a hybrid state found in strongle quantum confined PbS nanocrystals

Fernee, Mark J; Thomsen, Elizabeth; Jensen, Peter; Rubinsztein-Dunlop, Halina


We report that high quality PbS nanocrystals, synthesized in the strong quantum confinement regime, have quantum yields as high as 70% at room temperature. We use a combination of modelling and photoluminescence up-conversion to show that we obtain a nearly monodisperse size distribution. Nevertheless, the emission displays a large nonresonant Stokes shift. The magnitude of the Stokes shift is found to be directly proportional to the degree of quantum confinement, from which we establish that...[Show more]

CollectionsANU Research Publications
Date published: 2006
Type: Journal article
Source: Nanotechnology
DOI: 10.1088/0957-4484/17/4/020


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