Formation of spherical Sn particles by reducing SnO2 film in floating wire-assisted H2/Ar plasma at atmospheric pressure
| Autor: | Thi-Thuy-Nga Nguyen, Minoru Sasaki, Takayoshi Tsutsumi, Masaru Hori, Kenji Ishikawa |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Electron density
Materials science Absorption spectroscopy Chemical physics Analytical chemistry lcsh:Medicine 02 engineering and technology Substrate (electronics) 01 natural sciences Article Plasma physics Metal 0103 physical sciences lcsh:Science 010302 applied physics Multidisciplinary Atmospheric pressure lcsh:R Plasma Hydrogen atom 021001 nanoscience & nanotechnology Electrical and electronic engineering Design synthesis and processing visual_art visual_art.visual_art_medium lcsh:Q 0210 nano-technology Layer (electronics) |
| Zdroj: | Scientific Reports, Vol 10, Iss 1, Pp 1-12 (2020) Scientific Reports |
| ISSN: | 2045-2322 |
| Popis: | A green method to synthesize spherical Sn particles by reducing SnO2 film in atmospheric-pressure H2/Ar plasma at low temperatures for various applications is presented. The floating wire-assisted remotely-generated plasma with a mixture of 0.05% H2/Ar gas formed spherical metallic Sn particles by reducing a SnO2 layer on glass substrate. During the reduction process, H radical density was measured by using vacuum ultraviolet absorption spectroscopy, and plasma properties including electron density and gas temperature were diagnosed by optical emission spectroscopy. The inductively coupled generated plasma with a high electron density of 1014 cm−3, a hydrogen atom density of 1014 cm−3, and a gas temperature of 940 K was obtained at a remote region distance of 150 mm where the SnO2/glass substrate was placed for plasma treatment. The process has been modeled on the spherical Sn formation based on the reduction of SnO2 films using H radicals. Depending on the treatment condition, the total reduction area, where spherical Sn particles formed, was enlarged and could reach 300 mm2 after 2 min. The substrate temperature affected the expansion rate of the total reduction area and the growth of the Sn spheres. |
| Databáze: | OpenAIRE |
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