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

0517925 - FZÚ 2020 RIV GB eng J - Článek v odborném periodiku
Chemin, A. - Lam, J. - Laurens, G. - Trichard, F. - Motto-Ros, V. - Ledoux, G. - Jarý, Vítězslav - Laguta, Valentyn - Nikl, Martin - Dujardin, Ch. - Amans, D.
Doping nanoparticles using pulsed laser ablation in a liquid containing the doping agent.
Nanoscale Advances. Roč. 1, č. 10 (2019), s. 3963-3972. ISSN 2516-0230. E-ISSN 2516-0230
GRANT EU: European Commission(XE) 690599 - ASCIMAT
Institucionální podpora: RVO:68378271
Klíčová slova: induced breakdown spectroscopy * crystal-field analysis * rare-earth ions * molecular-dynamics * optical-properties * carbon nitride * quantum dots * water
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Způsob publikování: Open access

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 Gd2O3 target in aqueous solutions of EuCl3 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 Gd2O3 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.
Trvalý link: http://hdl.handle.net/11104/0303162