Naslov
Development of nanoporous crystalline thin films by spark plasma discharge

Autori
Radovanović-Perić, Floren ; Mandić, Vilko ; Jurov, Andrea ; Panžić, Ivana

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
ChemCYS 2023. Book of Abstracts / - , 2022, 1-1

Skup
Chemistry Conference for Young Scientists

Mjesto i datum
Blankenberge, Belgija, 12.10.2022. - 14.10.2022

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
spark ablation, morphology, thin film

Sažetak
Spark plasma discharge deposition or as we like to call it Spark Plasma Ablation Deposition (SPAD) is a novel method capable of preparing clean nanoparticle easily. Instantaneous sublimation of electrode material (target) is induced by a very high voltage that ionizes the carrier gas between the electrodes, creating metal vapour which then condensates into primary nanoparticles. By coupling the ablation device with an chamber where impaction deposition takes place, we were able to produce various stoichiometric and non- stoichiometric thin films from different conductive materials. Here we report on how the different average high energy plasma states (created by different sparking conditions and oxygen concentration in the carrier gas, both within the boundaries of the method) affect the crystallinity and chemical composition of metallic oxide thin films. Specifically we ablated Cu, Ti, V, W, Mo, Li and Mn targets. Plasma was monitored by optical emission spectroscopy while the film morphology was characterized by microscopy techniques (AFM, SEM) through thickness, surface roughness and particle size. Moreover, we tried to clarify the overall mechanisms of nanoparticle oxidation through standard (GIXRD, XPS) and advanced (GISAXS, TEM) characterization techniques. All of the films show good nanoporosity and controllable chemical composition, however we find that the order of crystallinity and degree of particle aggregation highly depends on the nature of the ablated system.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Kemija, Kemijsko inženjerstvo, Temeljne tehničke znanosti, Interdisciplinarne tehničke znanosti

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