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Journal of Nanophotonics

Fast and reliable approach to calculate energy levels in semiconductor nanostructures
Author(s): François Thierry; Judikaël Le Rouzo; François Flory; Gérard Berginc; Ludovic Escoubas
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Paper Abstract

We propose a method under the effective mass approximation with an original formulation that applies to quantum wells, circular quantum wires, and spherical quantum dots of arbitrary materials with sizes as small as 1 nm. Hundreds of structures are resolved on the second scale on a laptop, allowing for optimization procedures. We demonstrate its capability by confronting bandgap calculations with exhaustive literature data for CdS, CdSe, PbS, and PbSe nanoparticles. Our approach includes a correction of the mass to address the nonparabolicity of the band structure. The correction gives an accuracy comparable to more demanding calculation methods, such as eight-band k·p, tight-binding, or even semiempirical pseudopotential methods. The effect of the correction is shown on the intrasubband optical properties of InGaAs/AlGaAs coupled quantum wells.

Paper Details

Date Published: 6 March 2015
PDF: 10 pages
J. Nanophoton. 9(1) 093080 doi: 10.1117/1.JNP.9.093080
Published in: Journal of Nanophotonics Volume 9, Issue 1
Show Author Affiliations
François Thierry, Aix-Marseille Univ. (France)
Judikaël Le Rouzo, Aix-Marseille Univ. (France)
François Flory, Aix-Marseille Univ. (France)
Ecole Centrale Marseille (France)
Gérard Berginc, Thales Optronique S.A.S. (France)
Ludovic Escoubas, Aix-Marseille Univ. (France)

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