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Theoretical studies of excitons in type II CdSe/CdTe quantum dots

Miloszewski, JM, Tomic, S and Binks, D 2014, 'Theoretical studies of excitons in type II CdSe/CdTe quantum dots' , Journal of Physics: Conference Series, 526 , 012005.

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We present a method for calculating exciton and bi-exciton energies in type-II colloidal quantum dots. Our methodology is based on an 8-band k p Hamiltonian of the zinc- blend structure, which incorporates the effects of spin-orbit interaction, strain between the core and the shell and piezoelectric potentials. Exciton states are found using the configuration interaction (CI) method that explicitly includes the effects of Coulomb interaction, as well as exchange and correlation between many-electron configurations. We pay particular attention to accurate modelling of the electrostatic interaction between quasiparticles. The model includes surface polarization and self-polarization effects due to the large difference in dielectric constants at the boundary of the QD.

Item Type: Article
Themes: Energy
Schools: Schools > School of Computing, Science and Engineering
Journal or Publication Title: Journal of Physics: Conference Series
Publisher: IOP Publishing
Refereed: Yes
ISSN: 1742-6596
Related URLs:
Funders: Engineering and Physical Sciences Research Council (EPSRC), The Royal Society, London
Depositing User: Prof Stanko Tomic
Date Deposited: 26 Sep 2014 17:02
Last Modified: 05 Apr 2016 10:58

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