Copper chalcogenides

The co-reduction of copper and selenium is considered as an exception to Kroger s theory. Current-potential curves in the literature show that deposition of copper is rather compulsory to make the deposition of selenium possible. In fact, although the standard potential for Se(IV) reduction is more positive than that of copper (0.741 and 0.340 V vs. SHE, for selenous acid and cupric ion, respectively), it turns out that Se(IV) alone is reduced at more negative potentials than Cu(II). In the presence of copper, the order is reversed. 

Works on the electrochemical formation of copper sulfide have been reported mainly in connection with the fabrication of CujS/CdS junctions for solar cells [159-161]. 

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Despite the tremendous amount of work on the binary compounds, copper chalcogenide halides were first reported in 1969 (304). Nine compounds of selenium and tellurium have been found, and they are listed in Table 1. Copper sulfide halides are still unknown. 

Copper chalcogenides can be readily deposited by CD. There is a strong affinity between Cu and S or Se metallic Cu exposed to elemental S dissolved in a solvent (e.g., dimethyl sulphoxide) will quickly turn black due to formation of cop-... 

Copper chalcogenide halides have been prepared by this method for the first time. Tables I and II give the data. The conditions for the preparation of these compounds are listed in Table II. 

The most important of this group are copper, lead, and cadmium compounds. With the exception of some nonstoichiometric copper chalcogenides, these... 

Ternary and quaternary materials based on copper chalcogenide nanomaterials have been developed as promising materials for sustainable energy production, due to their abundance and low toxicity. In addition to their use as light absorbers in solar cells, copper chalcogenide nanocrystals have also been used as electrode materials in Li-ion batteries and high efficiency counter electrodes in dye/quantum dot sensitized solar cells as well as for NIR photothermal therapy. 

Arunkumar Panneerselvam and Mark Green Introduction II-VI chalcogenides Transition metal chalcogenides Copper chalcogenides IV-VI chalcogenides Ternary materials... 

Semmelmann M, Fenske D et al (1998) Copper-chalcogenide clusters stabilised with linear bidentate phosphine ligands. J Chem Soc Dalton Trans 2541-2545... 

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