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
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Article dans une revue
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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

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Pavel A. Kotin, Sergey S. Bubenov, Natalia E. Mordvinova, Sergey G. Dorofeev. AgCl-doped CdSe quantum dots with near-IR photoluminescence. Beilstein Journal of Nanotechnology, Karlsruhe Institute of Technology., 2017, 8, pp.1156-1166. ⟨10.3762/bjnano.8.117⟩. ⟨hal-02175457⟩

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