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AgCl-doped CdSe quantum dots with near-IR photoluminescence.

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.

SUBMITTER: Kotin PA

PROVIDER: S-EPMC5480357 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature

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AgCl-doped CdSe quantum dots with near-IR photoluminescence.

Kotin Pavel Aleksandrovich PA Bubenov Sergey Sergeevich SS Mordvinova Natalia Evgenievna NE Dorofeev Sergey Gennadievich SG

Beilstein journal of nanotechnology 20170529

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 peculiarit ...[more]

PMID: 28685116

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