Spectral fingerprint of quantum confinement in single CsPbBr3 nanocrystals - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Nano Letters Année : 2023

Spectral fingerprint of quantum confinement in single CsPbBr3 nanocrystals

Résumé

Lead halide perovskite nanocrystals are promising materials for classical and quantum light emission. To understand these outstanding properties, a thorough analysis of the band-edge exciton emission is needed which is not reachable in ensemble and room temperature studies because of broadening effects. Here, we report on a cryogenic-temperature study of the photoluminescence of single CsPbBr3 NCs in the intermediate quantum confinement regime. We reveal the size-dependence of the spectral features observed: the bright-triplet exciton energy splittings, the trion and biexciton binding energies as well as the optical phonon replica spectrum. In addition, we show that bright triplet energy splittings are consistent with a pure exchange model and that the variety of polarisation properties and spectra recorded can be rationalised simply by considering the orientation of the emitting dipoles and the populations of the emitting states.
Fichier principal
Vignette du fichier
Spectral fingerprint_HAL.pdf (1.81 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-04171342 , version 1 (26-07-2023)

Identifiants

Citer

Mohamed-Raouf Amara, Zakaria Said, Caixia Huo, Aurélie Pierret, Christophe Voisin, et al.. Spectral fingerprint of quantum confinement in single CsPbBr3 nanocrystals. Nano Letters, 2023, 23 (8), pp.3607. ⟨10.1021/acs.nanolett.3c00793⟩. ⟨hal-04171342⟩
17 Consultations
9 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More