Title :

Doping as a strategy to tune color of 2D colloidal nanoplatelets

Author(s) :

Dufour, Marion [Auteur]
Laboratoire de Physique et d'Etude des Matériaux (UMR 8213) [LPEM]
Izquierdo, Eva [Auteur]
Laboratoire de Physique et d'Etude des Matériaux (UMR 8213) [LPEM]
Livache, Clément [Auteur]
Laboratoire de Physique et d'Etude des Matériaux (UMR 8213) [LPEM]
Martinez, Bertille [Auteur]
Physico-chimie et dynamique des surfaces [INSP-E6]
Silly, Mathieu [Auteur]
Synchrotron SOLEIL [SSOLEIL]
Pons, Thomas [Auteur]
Laboratoire de Physique et d'Etude des Matériaux (UMR 8213) [LPEM]
Lhuillier, Emmanuel [Auteur]
Physico-chimie et dynamique des surfaces [INSP-E6]
Delerue, Christophe [Auteur]
Physique - IEMN [PHYSIQUE - IEMN]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Ithurria, Sandrine [Auteur correspondant]
Laboratoire de Physique et d'Etude des Matériaux (UMR 8213) [LPEM]

Journal title :

ACS Applied Materials & Interfaces

Pages :

10128-10134

Publisher :

Washington, D.C. : American Chemical Society

Publication date :

2019-03-13

ISSN :

1944-8244

English keyword(s) :

nanoplatelets
doping
gamut
luminescence

HAL domain(s) :

Chimie/Matériaux
Chimie

English abstract : [en]

Among colloidal nanocrystals, 2D nanoplatelets (NPL) made of II-VI compounds, appear as a special class of emitters with especially narrow photoluminescence signal. However the PL signal in the case of NPL is only tunable ...
Show more >Among colloidal nanocrystals, 2D nanoplatelets (NPL) made of II-VI compounds, appear as a special class of emitters with especially narrow photoluminescence signal. However the PL signal in the case of NPL is only tunable by discrete step. Here we demonstrate that doping is a viable path to finely tune the color of this NPL from green to red, making them extremely interesting as phosphor for wide gamut display. In addition using a combination of luminescence spectroscopy, tight binding simulation, transport and photoemission, we provide a consistent picture for the Ag doped CdSe NPL. The Ag state is strongly bound and located 340 meV above the valence band of the bulk material. The Ag dopant shifts the Fermi level toward the valence by up to 400 meV but preserve the n-type nature of the material.Show less >

Language :

Anglais

Popular science :

Non

ANR Project :

Sorbonne Universités à Paris pour l'Enseignement et la Recherche

Collections :

• Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL