Doping nanoparticles using pulsed laser ablation in a liquid containing the doping agent

While doping of semiconductors or oxides is crucial for numerous technological applications, its control remains difficult especially when the material is reduced down to the nanometric scale. In this paper, we show that pulsed laser ablation of an undoped solid target in an aqueous solution contain...

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Bibliographic Details
Published in:	Nanoscale advances Vol. 1; no. 1; pp. 3963 - 3972
Main Authors:	Chemin, Arsène, Lam, Julien, Laurens, Gaétan, Trichard, Florian, Motto-Ros, Vincent, Ledoux, Gilles, Jarý, Vít zslav, Laguta, Valentyn, Nikl, Martin, Dujardin, Christophe, Amans, David
Format:	Journal Article
Language:	English
Published:	RSC 08-10-2019
Subjects:	Chemical Sciences Chemistry Condensed Matter Inorganic chemistry Materials Science Physics
Online Access:	Get full text
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Summary:	While doping of semiconductors or oxides is crucial for numerous technological applications, its control remains difficult especially when the material is reduced down to the nanometric scale. In this paper, we show that pulsed laser ablation of an undoped solid target in an aqueous solution containing activator ions offers a new way to synthesise doped-nanoparticles. The doping efficiency is evaluated for laser ablation of an undoped Gd 2 O 3 target in aqueous solutions of EuCl 3 with molar concentration from 10 −5 mol L −1 to 10 −3 mol L −1 . Thanks to luminescence experiments, we show that the europium ions penetrate the core of the synthesised monoclinic Gd 2 O 3 nanoparticles. We also show that the concentration of the activators in the nanoparticles is proportional to the initial concentration in europium ions in the aqueous solution, and a doping of about 1% ([Eu]/[Gd] atomic ratio) is reached. On the one hand, this work could open new ways for the synthesis of doped nanomaterials. On the other hand, it also raises the question of undesired penetration of impurities in laser-generated nanoparticles in liquids. While doping is crucial for numerous technological applications, its control remains difficult especially when the material is reduced down to the nanometric scale. We suggest a new way to dope nanoparticles using laser ablation in liquids.
Bibliography:	10.1039/c9na00223e Electronic supplementary information (ESI) available. See DOI ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	2516-0230 2516-0230
DOI:	10.1039/c9na00223e