Many-body effects in CdSe/CdTe coloidal quantum dots

Miloszewski, JM; Tomic, S

Abstract

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.

Citation

Miloszewski, J., & Tomic, S. (2014, September). Many-body effects in CdSe/CdTe coloidal quantum dots. Presented at 14th International Conference on Numerical Simulation of Optoelectronic Devices, Palma, Spain

• Presentation Conference Type: Other
• Conference Name: 14th International Conference on Numerical Simulation of Optoelectronic Devices
• Conference Location: Palma, Spain
• Start Date: Sep 1, 2014
• End Date: Sep 4, 2014
• Online Publication Date: Oct 27, 2014
• Publication Date: Oct 27, 2014
• Deposit Date: Sep 26, 2014
• DOI: https://doi.org/10.1109/NUSOD.2014.6935326
• Publisher URL: http://dx.doi.org/10.1109/NUSOD.2014.6935326
• Related Public URLs: http://www.nusod.org/
• Additional Information: Event Type : Conference; Funders : Engineering and Physical Sciences Research Council (EPSRC);The Royal Society, London