Lateral Confinement in 2D Nanoplatelets: A Strategy to Expand the Colloidal Quantum Engineering Toolbox - Tout INSP Accéder directement au contenu
Article Dans Une Revue Advanced Optical Materials Année : 2024

Lateral Confinement in 2D Nanoplatelets: A Strategy to Expand the Colloidal Quantum Engineering Toolbox

Muchuan Hua
Erwan Bossavit
Burak Guzelturk
Benjamin T Diroll

Résumé

Abstract Among colloidal nanocrystals, 2D nanoplatelets offer a unique set of properties with exceptionally narrow luminescence and low lasing thresholds. Furthermore, their anisotropic shape expands the playground for the complex design of heterostructures where spectra but also scattering rates can be engineered. A challenge that still remains is to combine shell growth which makes NPLs stable, with spectral tunability. Indeed, most reported shelled nanoplatelets end up being red emitters due to a loss of quantum confinement. Here, the combination of both lateral and in‐plane confinements within a single heterostructure is explored. A CdS/CdSe/CdS/CdZnS core–crown–crown shell structure that enables yellow emission is grown and that is responsive to a large range of excitation including visible photons, X‐ray photons, electron beams, and electrical excitations. k.p simulations predict that emission tunability of up to several 100 s of meV can be obtained in ideal structures. This material also displays stimulated emission resulting from bi‐exciton emission with a low threshold. Once integrated into an LED stack, this material is compatible with sub‐bandgap excitation and exhibits high luminance. Scaling of the electroluminescence properties by downsizing the pixel size is also investigated.
Fichier principal
Vignette du fichier
Advanced Optical Materials - 2024 - Curti - Lateral Confinement in 2D Nanoplatelets A Strategy to Expand the Colloidal.pdf (4.01 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)
licence

Dates et versions

hal-04620448 , version 1 (21-06-2024)

Licence

Identifiants

Citer

Leonardo Curti, Corentin Dabard, Lina Makké, Ningyuan Fu, Henri Lehouelleur, et al.. Lateral Confinement in 2D Nanoplatelets: A Strategy to Expand the Colloidal Quantum Engineering Toolbox. Advanced Optical Materials, 2024, ⟨10.1002/adom.202400555⟩. ⟨hal-04620448⟩
0 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More