Interrelation of structural and electronic properties of InGaN/GaN quantum dots using an eight-band k.p model

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dc.creatorWinkelnkemper, Momme
dc.creatorSchliwa, Andrei
dc.creatorBimberg, Dieter
dc.date2006-10-17
dc.date.accessioned2026-07-07T07:27:33Z
dc.date.available2026-07-07T07:27:33Z
dc.descriptionWe present an eight-band k.p model for the calculation of the electronic structure of wurtzite semiconductor quantum dots (QDs) and its application to indium gallium nitride (InGaN) QDs formed by composition fluctuations in InGaN layers. The eight-band k.p model accounts for strain effects, piezoelectric and pyroelectricity, spin-orbit and crystal field splitting. Exciton binding energies are calculated using the self-consistent Hartree method. Using this model, we studied the electronic properties of InGaN QDs and their dependence on structural properties, i.e., their chemical composition, height, and lateral diameter. We found a dominant influence of the built-in piezoelectric and pyroelectric fields, causing a spatial separation of the bound electron and hole states and a redshift of the exciton transition energies. The single-particle energies as well as the exciton energies depend heavily on the composition and geometry of the QDs.
dc.identifierhttps://arxiv.org/abs/cond-mat/0610462
dc.identifierhttp://arxiv.org/abs/cond-mat/0610462
dc.identifierPhys. Rev B 74, 155322 (2006)
dc.identifierdoi:10.1103/PhysRevB.74.155322
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/117416
dc.subjectMaterials Science
dc.titleInterrelation of structural and electronic properties of InGaN/GaN quantum dots using an eight-band k.p model
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