Influence of golden nanoparticles on the incorporation of Eu.sup.2+./sup. into BaI.sub.2./sub. and defect concentration

0573914 - FZÚ 2024 RIV CH eng J - Článek v odborném periodiku
Ridzoňová, Katarína - Buryi, Maksym - Babin, Vladimir - John, David - Drahokoupil, Jan - Neykova, Neda - Salamakha, T. - Tratsiak, Y.
Influence of golden nanoparticles on the incorporation of Eu²⁺ into BaI₂ and defect concentration.
Crystals. Roč. 13, č. 6 (2023), č. článku 902. ISSN 2073-4352. E-ISSN 2073-4352
Grant ostatní: AV ČR(CZ) NASB-20-03
Program: Bilaterální spolupráce
Institucionální podpora: RVO:68378271
Klíčová slova: barium iodide * Eu²⁺ * Au nanoparticles * luminescence * EPR
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 2.7, rok: 2022
Způsob publikování: Open access

Conjugated BaI2:Eu(5 at.%) nanocrystalline particles were synthesized decorated with golden nanoparticles (GNP). GNP demonstrated relatively strong hydrophobic effect protecting the surface of the hygroscopic BaI2 from BaI2·H2O phase create the GNP/BaI2 composite – it was sped up. This was explained by the moderation of negative charge in the GNP leading to the repulsion with an electron in the excited Eu2+. The Eu2+ luminescence intensity was dropping upon the GNP content. This was due to the decreased number of Eu2+ ions in the BaI2, most probably, arising from the Au substitution for Ba competing with Eu.
Trvalý link: https://hdl.handle.net/11104/0344296