B Szafran et al 2000 J. Phys.: Condens. Matter 12 2453 doi:10.1088/0953-8984/12/11/311
Recombination energy for excitonic trions in quantum dots
B Szafran
,
, B Stébé, J Adamowski and S Bednarek
A theoretical study of excitonic trions, X- and X2 + , in semiconductor quantum dots is presented. The model of a spherical quantum well of finite depth is applied to determine the influence of the three-dimensional quantum confinement on the recombination energies of the excitonic trions. A new type of variational wave function, expanded in a Gaussian basis, has been proposed. It is shown that the blue-shift of the recombination induced by the quantum confinement is much stronger for the positive trion X2 + than for the negative trion X- .
- PACS
- Subjects
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Condensed matter: electrical, magnetic and optical
- Dates
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Issue 11 (20 March 2000)
Received 7 December 1999
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Recombination energy for excitonic trions in quantum dots
B Szafran et al 2000 J. Phys.: Condens. Matter 12 2453
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