Let There Be Order, in Films of Colloidal CdSe 2D Nanocrystals.
basic_science · Level V
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- Record sourced from PubMed, PMID 32243174.
- Also identified by DOI 10.1021/acs.nanolett.0c01373.
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Abstract
Progression from random orientation of 2D CdSe nanoplatelets to ordered close-packed thin films enables us to exploit the in-plane dipole moment of the band-edge transition on a macroscopic scale and gain control over the direction of charge and energy transport within the film. Momper et al. show how this can be achieved by tuning the solvent evaporation rate during deposition. They are able to switch from thermodynamically to kinetically controlled conditions for the film formation, resulting in ordered films with either face-down or edge-up alignment of the 2D nanoplatelets.