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.
|Schools:||Schools > School of Computing, Science and Engineering|
|Journal or Publication Title:||Journal of Physics: Conference Series|
|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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