Berlin 2018 – wissenschaftliches Programm

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DS: Fachverband Dünne Schichten

DS 28: 2D materials: Chalcogenides II (joint session HL/DS)

DS 28.10: Vortrag

Donnerstag, 15. März 2018, 12:00–12:15, A 151

Nanoplatelets - a material system between strong confinement and weak confinement — •Marten Richter — Institut für Theoretische Physik, Technische Universität Berlin, Germany

Recently grown CdSe Nanoplatlets are often described to have a similar electronic structure as two-dimensional quantum wells and are promoted as colloidal quantum wells with monolayer precision width. Here we show, that nanoplatelets are not ideal quantum wells, but cover (depending on their size a strong confinement) an intermediate and a Coulomb interaction dominated regime [1]. For the analysis we show results from a solution of the full four dimensional exciton wave function and analyze different confinement regimes.

[1] Phys. Rev. Materials 1, 016001 (2016)