Název:
Surface changes induced by plasma treatment and high temperature annealing of silicon dioxide microparticles
Autoři:
Babčenko, Oleg ; Remeš, Zdeněk ; Beranová, Klára ; Kolářová, Kateřina ; Lörinc, J. ; Prošek, Z. ; Tesárek, P. Typ dokumentu: Příspěvky z konference Konference/Akce: NANOCON 2023 - International Conference on Nanomaterials - Research & Application /15./, Brno (CZ), 20231018
Rok:
2024
Jazyk:
eng
Abstrakt: Due to the high surface to volume ratio, the particles’ surface properties modification defines its properties in general, which is crucial for their use. From this point of view, plasma processing or high temperature annealing can be considered as the universal techniques for efficient modification of materials in the form of powder. In this study, the silicon dioxide microparticles have been treated in a hydrogen, oxygen or vacuum by low temperature plasma or annealing. The change of SiO2 microparticles properties was investigated by photoluminescence spectroscopy at room and low temperature. High temperature annealing in hydrogen induced under UV excitation photoluminescence in the near UV and visible light indicating the change of defect states on the surface of the microparticles. We believe that observed findings clearly demonstrate useful method for analysis of SiO2 microparticles surface modification attractive also for fundamental research.
Klíčová slova:
annealing; measuring setup; photoluminescence; plasma treatment; silicon dioxide Číslo projektu: GA23-05500S (CEP), 8X23025, LM2023051 (CEP) Poskytovatel projektu: GA MŠk, GA MŠk, GA MŠk Zdrojový dokument: NANOCON 2023 Conference Proceedings, ISBN 978-80-88365-15-0, ISSN 2694-930X