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2015-02-03

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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/154940

Au-assisted growth of anisotropic and epitaxial CdSe colloidal nanocrystals via in-situ dismantling of quantum dots

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https://doi.org/10.1021/cm504433y

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The optimization of a material functionality requires both the rational design and precise engineering of its structural and chemical parameters. In this work, we show how colloidal chemistry is an excellent synthetic choice for the synthesis of novel ternary nanostructured chalcogenides, containing exclusively noble metals, with tailored morphology and composition and with potential application in the energy conversion field. Specifically, the Ag-Au-Se system has been explored from a synthetic point of view, leading to a set of Ag2Se-based hybrid and ternary nanoparticles, including the room temperature synthesis of the rare ternary Ag3AuSe2 fischesserite phase. An in-depth structural and chemical characterization of all nanomaterials has been performed, which proofed especially useful for unravelling the reaction mechanism behind the formation of the ternary phase in solution. The work is complemented with the thermal and electric characterization of a ternary Ag-Au-Se nanocomposite with promising results: we found that the use of the ternary nanocomposite represents a clear improvement in terms of thermoelectric energy conversion as compared to a binary Ag-Se nanocomposite analogue.

Matèries

Nanopartícules, Nanocristalls, Anisotropia, Or

Matèries (anglès)

Nanoparticles, Nanocrystals, Anisotropy, Gold

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Articles publicats en revistes (Química Inorgànica i Orgànica)

Citació

FERNÀNDEZ ALTABLE, Víctor, DALMASES SOLÉ, Mariona, FALQUI, Andrea, CASU, Alberto, TORRUELLA BESA, Pau, ESTRADÉ ALBIOL, Sònia, PEIRÓ MARTÍNEZ, Francisca, FIGUEROLA I SILVESTRE, Albert. Au-assisted growth of anisotropic and epitaxial CdSe colloidal nanocrystals via in-situ dismantling of quantum dots. _Chemistry of Materials_. 2015. Vol. 27, núm. 5, pàgs. 1656-1664. [consulta: 25 de febrer de 2026]. ISSN: 0897-4756. [Disponible a: https://hdl.handle.net/2445/154940]

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