Combined Au/Ag nanoparticle creation in ZnO nanopillars by ion implantation for optical response modulation and photocatalysis

0566555 - ÚJF 2024 RIV NL eng J - Článek v odborném periodiku
Macková, Anna - Jagerová, Adéla - Lalik, Ondřej - Mikšová, Romana - Poustka, D. - Mistrík, J. - Holý, V. - Schutter, J. D. - Kentsch, U. - Marvan, P. - Azarov, A. - Galeckas, A.
Combined Au/Ag nanoparticle creation in ZnO nanopillars by ion implantation for optical response modulation and photocatalysis.
Applied Surface Science. Roč. 610, FEB (2023), č. článku 155556. ISSN 0169-4332. E-ISSN 1873-5584
Grant CEP: GA MŠMT EF16_013/0001812; GA ČR GA18-03346S
Výzkumná infrastruktura: CEMNAT II - 90103; NanoEnviCz II - 90124
Institucionální podpora: RVO:61389005
Klíčová slova: ZnO nanopillars * Au * Ag nanoparticles ion implantation * SPR * doped ZnO nanostructures
Obor OECD: Nuclear physics
Impakt faktor: 6.7, rok: 2022
Způsob publikování: Omezený přístup
https://doi.org/10.1016/j.apsusc.2022.155556

ZnO nanopillars were implanted with Au-400 keV and Ag-252 keV ions with ion fluences from 1 x 1015 cm-2 to 1 x 1016 cm-2. We compared ZnO nanopillars solely implanted with Au-ions and dually-implanted with Au and Ag-ions. Rutherford Back-Scattering spectrometry (RBS) confirmed Ag and Au embedded in ZnO nanopillar layers in a reasonable agreement with theoretical calculations. A decreasing thickness of the ZnO nanopillar layer was evidenced with the increasing ion implantation fluences. Spectroscopic Ellipsometry (SE) showed a decrease of refractive index in the nanopillar parts with embedded Au, Ag-ions. XRD discovered vertical domain size decreasing with the proceeding radiation damage accumulated in ZnO nanopillars which effect was preferably ascribed to Au-ions. SE and diffuse reflectance spectroscopy (DRS) showed optical activity of the created nanoparticles at wavelength range 500 - 600 nm and 430 - 700 nm for the Au-implanted and Au, Ag-implanted ZnO nanopillars, respectively. Photoluminescence (PL) features linked to ZnO deep level emission appear sub-stantially enhanced due to plasmonic interaction with metal nanoparticles created by Ag, Au-implantation. Photocatalytic activity seems to be more influenced by the nanoparticles presented in the layer rather than the surface morphology. Dual implantation with Ag, Au-ions enhanced optical activity to a larger extent without significant morphology deterioration as compared to the solely Au-ion implanted nanopillars.
Trvalý link: https://hdl.handle.net/11104/0337874