Toward Superlattices of Colloidal Quantum Wells: Shall I Expect Molecular Coupling?
Juan I. Climente a, Josep Planelles a, José L. Movilla a
a University Jaume I, Spain, Avinguda de Vicent Sos Baynat, Castelló de la Plana, Spain
Poster, Juan I. Climente, 019
Publication date: 6th May 2020

We show theoretically that carriers confined in semiconductor colloidal nanoplatelets (NPLs) sense the presence of neighbor, cofacially stacked NPLs in their energy spectrum. When
approaching identical NPLs, the otherwise degenerate energy levels red-shift and split, forming (for large stacks) minibands that are several meV in width. Unlike in epitaxial structures, the molecular behavior does not result from quantum tunneling but from changes in the dielectric confinement. We predict spectroscopic signatures that should confirm the formation of molecular states, whose practical realization would pave the way for the development of nanocrystal chemistry based on NPLs.

MICINN project CTQ-2017-83781-P

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