Many-body effects in CdSe/CdTe coloidal quantum dots

Miloszewski, JM and Tomic, S 2014, Many-body effects in CdSe/CdTe coloidal quantum dots , in: 14th International Conference on Numerical Simulation of Optoelectronic Devices, 1-4 September 2014, Palma, Spain.

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We present a theoretical method for calculations of 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 manyelectron 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: Conference or Workshop Item (Paper)
Themes: Energy
Schools: Schools > School of Computing, Science and Engineering
Journal or Publication Title: NUSOD
Publisher: IEEE
Refereed: Yes
Related URLs:
Funders: Engineering and Physical Sciences Research Council (EPSRC), The Royal Society, London
Depositing User: Prof Stanko Tomic
Date Deposited: 26 Sep 2014 11:23
Last Modified: 09 Aug 2017 01:29

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