Silver nanoparticles for fluorescent nanocomposites by high-pressure magnetron sputtering

0570688 - FZÚ 2024 RIV CH eng J - Journal Article
Zikmund, Tomáš - Bulíř, Jiří - Novotný, Michal - Fekete, Ladislav - Chertopalov, Sergii - Irimiciuc, Stefan - Klementová, Mariana - Balogová, Jarmila - Lančok, Ján
Silver nanoparticles for fluorescent nanocomposites by high-pressure magnetron sputtering.
Materials. Roč. 16, č. 4 (2023), č. článku 1591. E-ISSN 1996-1944
R&D Projects: GA ČR(CZ) GA20-21069S
Research Infrastructure: CzechNanoLab II - 90251
Institutional support: RVO:68378271
Keywords : Ag nanoparticles * surface plasmon resonance * photoluminescence
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 3.4, year: 2022
Method of publishing: Open access

We report on the formation of silver nanoparticles by gas aggregation in a reaction chamber at room temperature. The size distribution of nanoparticles deposited on a silicon substrate for various lengths of an aggregation (high-pressure) chamber was investigated by atomic force microscopy. Nanoparticles were characterized by scanning and transmission electron microscopy and spectral ellipsometry. The physical shape of the nanoparticles and its distribution was correlated with their optical properties. Metal-dielectric nanocomposites were deposited employing simultaneous deposition of Ag NPs via high-pressure magnetron sputtering and the dielectric matrix was deposited via thermal evaporation. Pure and Eu-, Er-, and Yb-doped lithium fluoride was used as the dielectric host matrix. Optical transmittance of lithium fluoride containing silver nanoparticles was measured and their theoretical absorption cross-section calculated. The nanoparticles were also embedded in Eu3+-doped downshifting and Er3+- and Yb3+-doped up-conversion materials to study their influence on emission spectra. Spectra of identical layers with and without nanoparticles were compared. Their transmittance at various annealing temperatures is also presented.
Permanent Link: https://hdl.handle.net/11104/0342019