AgCl-doped CdSe quantum dots with near-IR photoluminescence

Pavel A. Kotin; Sergey S. Bubenov; Natalia E. Mordvinova; Sergey G. Dorofeev

AgCl-doped CdSe quantum dots with near-IR photoluminescence

Pavel A. Kotin ¹ Sergey S. Bubenov ¹ Natalia E. Mordvinova ² Sergey G. Dorofeev ¹

1 MSU - Lomonosov Moscow State University

2 CRISMAT - Laboratoire de cristallographie et sciences des matériaux

Abstract : We report the synthesis of colloidal CdSe quantum dots doped with a novel Ag precursor AgCl. The addition of AgCl causes dramatic changes in the morphology of synthesized nanocrystals from spherical nanoparticles to tetrapods and finally to large ellipsoidal nanoparticles. Ellipsoidal nanoparticles possess an intensive near-IR photoluminescence ranging up to 0.9 eV (ca. 1400 nm). In this article, we explain the reasons for the formation of the ellipsoidal nanoparticles as well as the peculiarities of the process. The structure, Ag content, and optical properties of quantum dots are also investigated. The optimal conditions for maximizing both the reaction yield and IR photoluminescence quantum yield are found.

Keywords : Ag doping CdSe quantum dots doped semiconductor nanocrystals IR photoluminescence tetrapods

Type de document :

Article dans une revue

Domaine :

Chimie

Chimie / Cristallographie

Chimie / Matériaux

Chimie / Chimie théorique et/ou physique

Liste complète des métadonnées

https://hal-normandie-univ.archives-ouvertes.fr/hal-02175457
Contributeur : Elisabeth van T Hof <>
Soumis le : vendredi 5 juillet 2019 - 17:03:14
Dernière modification le : mercredi 4 septembre 2019 - 17:36:03

AgCl-doped CdSe quantum dots with near-IR photoluminescence

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AgCl-doped CdSe quantum dots with near-IR photoluminescence

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