Cusing

CUsing program LAZY PULVERIX (Yvon, K. Jeitschko, W. Parthe,... 

Separation of human a-amylase isoenzymes by electrofo-cusing and their immunological properties. Clin. Chim. Acta (1975), 60, 207-213. 

Cupric sulfide, CuS, occurring as the mineral covellite (also known as covelline), exhibits a very unusual structure, in which the Cu is again partly 3-coordinate and partly 4-coordinate, with two-thirds of the sulfur atoms existing as S2 groups like those in pyrites. The low-temperature form of CuSe has also a covellite structure, the high-temperature modification (P-CuSe) being orthorhombic. All CuX2 compounds assume pyrite-type structures. 

A quantitative analysis of the kinetics of CdSe deposition from selenosulfate, Cd(II)-EDTA baths in terms of a mechanism involving nucleation and electrode kinetics has been given by Kutzmutz et al. [65], Note also that selenosulfate-containing baths have been used for the anodic selenization of vacuum-deposited metal films in order to synthesize CdSe and other binary selenide semiconductor thin films such as CuSe and InSe [66],... 

In searching to formulate a mechanism of CuInSc2 phase formation by one-step electrodeposition from acid (pH 1-3) aqueous solutions containing millimolar concentrations of selenous acid and indium and copper sulfates, Kois et al. [178] considered a number of consecutive reactions involving the formation of Se, CuSe, and Cu2Se phases as a pre-requisite for the formation of CIS (Table 3.2). Thermodynamic and kinetic analyses on this basis were used to calculate a potential-pH diagram (Fig. 3.10) for the aqueous Cu+In-i-Se system and construct a distribution diagram of the final products in terms of deposition potential and composition ratio of Se(lV)/Cu(ll) in solution. 

Compounds CuSe, MoSe2, TaSe2, WSe2 MoS2 K3Fe(CN)6... 

Cycles have been worked on for a number of different compounds, including CdTe [44,159-162,311,321], CdSe [106-108,321], CdS [60-62,321], ZnTe [44,279], ZnSe [279], ZnS [279,407], PbSe, CuSe [306], InSe [306], and CuInSe2 [306]. However, thin films of reasonable quality have, so far, only been formed of CdTe [158,311,321], CdSe [321], and CdS [59,321], The main problem is that there is a significant effort needed to get a flow deposition system up and running and producing deposits. 

Copper selenide is also used in solar cells [200]. TOPO-capped CuSe nanoparticles were synthesized from Cu(Se2CNEt2)2 using a single-source method [201]. Copper selenide nanoparticles have also been prepared and XPS spectra, valence bands and Auger transitions reported for the molecular clusters Cui46Se73(PPh(3))(202) and Cu2Se [203]. Photoemission features were reported for both species. 

The three main phases encountered in CD Cu-Se films are BerzeUanite (Cui-xSe, where x is typically ca. 0.2) Umangite (often written as CusSei but may be considerably lower in Cu) and Klockmannite (CuSe). 

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