Electrochemical deposition of indium into oxidized and unoxidized porous silicon

Selective Electrochemical Deposition of Indium In-Between Silicon Nanowire Arrays Fabricated by Metal-Assisted Chemical Etching

“…Since the structures in question generally fall below this size threshold, the data obtained via this method (EDX concentration profiles and EDX maps) can be perceived as average throughout said volume and are therefore expressed in arbitrary units (a.u.). As the conditions of the EDX analysis remained unchanged for all the samples discussed in the present work, we consider this approach reasonable due to only using these concentration values as means of spatial distribution comparison [26] .…”

“…However, indium crystallites (particles) are formed not only at the pore bottoms, but also at the pore sidewalls and the surface of PS as well [25] . The various approaches we have undertaken to localize the deposition at pore bottoms have not yet been successful [26] . As mentioned before, it was also noted that the kinetics of indium's electrodeposition differ significantly from those of other typically electrodeposited metals, showcasing lacking wettability of the silicon's surface that prevents formation of continuous films and reproducible pore filling [ 18 , 27 ].…”

Sorbent selection for the recovery of gallium and indium from aqueous solutions: a sustainable approach to the recovery of strategic metals from LED lamps

“…Several alternatives have been studied in the literature, when dealing with metal-contaminated wastewater. Some of them are ltration (Lahti et al 2020), chemical precipitation (Janin et al 2009), membrane processes (Lahti et al 2020), solvent extraction (Liu et al 2006;Song et al 2020;Drzazga et al 2021) or electrochemical methods (Grevtsov et al 2021). However, these processes have signi cant drawbacks, such as sludge production, large operation costs or incapability of reaching a complete removal.…”

27‐1: Invited Paper: Nanocomposites and Alloys Based on Porous Silicon Filled with Metals and Semiconductors

“…Among various prospective "guests", metals are especially attractive [2]. As part of the present work, we present results on electrodeposition of nickel [3,4] and indium [5] into PS to fabricate nanocomposites exhibiting specific magnetic and electrical properties. Metal deposits formed inside the pore channels inherit the latter's shapes and sizes.…”