Electrodeposition of nanowires of a high copper content thiourea precursor of copper sulfide

Abstract

In this study we reported the pulsed electrodeposition technique of copper thiourea complex nanowires which is an important material class for application as a precursor of copper sulfide nanocrystals with potential use in solar cells, optoelectronics, medicine, etc.

Photothermal Synthesis of Copper Sulfide Nanowires for Direct Lithography of Chalcogenides on a Chip

“…To compare the material’s composition in the exposed and pristine areas of the sample, we performed Raman shift measurements; the corresponding spectra are shown in Figure S8d,e. From these spectra, we calculated the remaining phase fraction of the CTC precursor based on the area under the peak located at 708 cm –1 , corresponding to the CS stretching vibration band . This particular band does not overlap with any other bands originating from either the CTC or the evolving copper sulfide and hence yields a quantitative measure for the transformation.…”

“…CTC nanowires of composition [Cu­(tu)]­Cl·1/2H 2 O were synthesized electrochemically in a three-electrode configuration, as described in earlier work . We used a 0.25 mm thick platinum foil (99.9% purity, Alfa Aesar) as a working electrode, a graphite foil (Alfa Aesar) of 1 mm thickness as a counter electrode, and a standard Ag/AgCl reference electrode.…”

“…Several routes for the fabrication of copper sulfide NPs with varying, tailor-made morphologies have been developed. − Among these, the synthesis methods based on dry single-source precursors − for copper and sulfur are of particular interest because they are cost-effective, employ relatively low temperatures (80–200 °C), and produce high-quality uniform nanocrystalline material. One such route applied for the production of thin films of nanocrystalline copper sulfide is based on the precursor copper thiourea complex (CTC), which is spray-deposited onto the target surface.…”

“…One such route applied for the production of thin films of nanocrystalline copper sulfide is based on the precursor copper thiourea complex (CTC), which is spray-deposited onto the target surface. Afterward, the CTC layer is heated to induce the conversion to copper sulfide. , Besides their relevance as a precursor for the energy material copper sulfide, CTCs have applications, ranging from electroplating and anticorosives to biological and pharmaceutical research …”

Crystal structure of bis[μ-N-(η2-prop-2-en-1-yl)piperidine-1-carbothioamide-κ2 S:S]bis[(thiocyanato-κN)copper(I)]

“…Thiourea and its derivatives, N-substituted thiourea and N, N 0disubstituted thiourea, are well-known ligands to copper ions, such as for their structural relatedness of proteins in bioinorganic chemistry and controlling redox potentials of copper ions in electrochemistry. Recently, copper-thiourea complexes [Cu(tu)s] have been investigated as electronic materials, for precursors of copper sulfide to be applied as semiconductors (Shamraiz et al, 2017;Sarma et al, 2019;Patel et al, 2019), photocatalysts (Tran et al, 2012;Pal et al, 2015), and sensors (Liu & Xue, 2011;Sabah et al, 2016;Sagade & Sharma, 2008). Cu(tu)s have also been used as a component of the precursor ink for forming CuIn(S, Se) as photo-absorbing layers in solar cells (Uhl et al, 2016).…”