Electronic states of elongated PbSe/PbS Core/shell quantum dots

Walsh, T, Miloszewski, J, Aeberhard, U and Tomic, S 2014, 'Electronic states of elongated PbSe/PbS Core/shell quantum dots' , Journal of Physics: Conference Series, 526 , 012010.

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Abstract

The optical characteristics of colloidal quantum dots (QDs) are highly dependent on the physical geometry of the QD (size, shape) as well as composition. These dependencies make such systems attractive for application in novel optical devices, notably for solar cell technology. Empirical electronic structure methods, such as kcenterdotp theory, or empirical pseudopotential theories have successfully reproduced experimentally observed transitions in CdSe and PbSe colloidal QDs. Our approach uses the kcenterdotp method to predict such properties as the electronic structure and dipole transitions of ellipsoidal PbSe/PbS core/shell structure colloidal QDs, as a function of eccentricity. Due to the anisotropy between the longitudinal (z) and transverse (x and y) directions, we present results from elongation along both the x and z directions.

Item Type: Article
Schools: Schools > School of Computing, Science and Engineering
Journal or Publication Title: Journal of Physics: Conference Series
Publisher: IOP Publishing
ISSN: 1742-6596
Depositing User: WM Taylor
Date Deposited: 07 Nov 2016 11:18
Last Modified: 08 Aug 2017 18:08
URI: http://usir.salford.ac.uk/id/eprint/40631

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