Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Photoelectrochemical Deposition of Silicon–Carbon Layer on P-Type Semiconductors and Aluminum–Copper Alloy in Ionic Liquid

Asta Grigucevičienė
ORCID logo ,
Putinas Kalinauskas
,
Laurynas Staišiūnas
ORCID logo ,
Konstantinas Leinartas
ORCID logo ,
Algirdas Selskis
,
Eimutis Juzeliūnas
* ORCID logo
Version 1 : Received: 25 May 2023 / Approved: 30 May 2023 / Online: 30 May 2023 (02:17:31 CEST)

A peer-reviewed article of this Preprint also exists.

Grigucevičienė, A.; Kalinauskas, P.; Staišiūnas, L.; Leinartas, K.; Selskis, A.; Juzeliūnas, E. Photoelectrochemical Deposition of Silicon–Carbon Layer on P-Type Semiconductors and Aluminum–Copper Alloy in Ionic Liquid. Coatings 2023, 13, 1159. Grigucevičienė, A.; Kalinauskas, P.; Staišiūnas, L.; Leinartas, K.; Selskis, A.; Juzeliūnas, E. Photoelectrochemical Deposition of Silicon–Carbon Layer on P-Type Semiconductors and Aluminum–Copper Alloy in Ionic Liquid. Coatings 2023, 13, 1159.

Abstract

Electrochemical deposition of silicon at room temperature is problematic due to intrinsically low conductivity of the deposits. This study reports the photoelectrochemical (PEC) deposition of silicon (Si) and silicon–carbon (Si–C) layers from an ionic liquid at temperature 40 oC using silicon tetrachloride (SiCl4) as a silicon precursor. Amorphous layers are deposited on p-type silicon (p-Si), p-type gallium arsenide (p-GaAs), and aluminum–copper alloy AA2024. The semi-conductor substrates are activated by white LED illumination, which generated photoelectrons, thereby making the substrate conductive with respect to the cathodic reaction. Photoresponsive-ness of the deposits is proven by the light-induced photocurrents on an optically inactive substrate made of the alloy AA 2024. The proposed method paves the way for the electrochemical modifica-tion of semiconductors and metals with Si and Si–C structures, which are applicable in various fields, such as; batteries, anti-corrosion coatings, photovoltaics, or PEC electrodes for hydrogen production.

Keywords

silicon; carbon; gallium arsenide; semiconductor; photoelectrochemistry; ionic liquid

Subject

Chemistry and Materials Science, Electrochemistry

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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