Charged excitons or trions in 2D parabolic quantum dots?

So far in the literature the terms “charged exciton” and “trion” are often confused with each other and mostly considered as the same. In this work we show this is not the case in 2D quantum dots with a parabolic confinement. By using the unrestricted Hartree-Fock method the energy and binding energ...

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Bibliographic Details
Published in:Journal of physics. Conference series 2022-05, Vol.2269 (1), p.12005
Main Authors: Quang, Nguyen Hong, Huong, Nguyen Que
Format: Article
Language:English
Subjects:
Binding energy
charged exciton
Current carriers
Electrons
Excitons
Hartree-Fock method
parabolic quantum dot
Physics
Quantum dots
trion
Trions
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Summary:So far in the literature the terms “charged exciton” and “trion” are often confused with each other and mostly considered as the same. In this work we show this is not the case in 2D quantum dots with a parabolic confinement. By using the unrestricted Hartree-Fock method the energy and binding energy of both charged excitons and trions in 2D parabolic quantum dots are calculated in dependence on the confinements of charge carriers in quantum dot. It is shown that the binding energies of the charged exciton and the trion behave differently in regard to the ratios of the confinements between the electron and hole. The effect of the external magnetic field on the binding energies of charged excitons has been also considered.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/2269/1/012005