Collection of scientific works Nanosystems, nanomaterials, nanotechnologies Year 2023 Volume 21, Issue 4
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O. K. SHUAIBOV, O. Y. MINIA, R. V. HRYTSAK, R. M. HOLOMB, and Z. T. HOMOKI
Conditions of Plasma Synthesis of Surface Microstructures in the ‘Air–Silver Sulfide (Ag2S)’ Steam-and-Gas Mixture
721–737 (2023)

PACS numbers: 51.50.+v, 52.80.Mg, 52.80.Tn, 79.60.Jv, 81.15.Gh, 81.16.Be, 82.33.Xj

The characteristics of an overvoltage nanosecond discharge in air between polycrystalline electrodes made of a superionic conductor, silver sulphide (Ag2S), are presented. The voltage and current pulses, the pulse discharge power and the contribution of plasma energy per pulse, and the optical characteristics of the discharge as a function of both air pressure and the parameters of the discharge-excitation system are studied. This made it possible to establish the optimal conditions for sputtering the polycrystalline electrodes and synthesizing the relevant films on a substrate installed near the electrodes’ system. The surface microstructures based on both silver-sulphide sputtered in the discharge and air-molecules’ dissociation products are synthesized. The Raman light-scattering spectra of the surface microstructures synthesized from both the electrodes’ spray products and air-molecules’ decay products in the discharge are studied.

Key words: overvoltage nanosecond discharge, silver sulphide, air, thin films, UV radiation, Ra-man spectroscopy.

Issue DOI:  https://doi.org/10.15407/nnn.21.04.721

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