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Semiconductors with Chalcopyrite Structure
Nature, 1956IT was recently reported1 that certain compounds crystallizing with a triply substituted diamond lattice of the chalcopyrite type are semiconductors. We would report here optically determined energy gaps for a further four such compounds. These, together with the previously reported values for copper indium selenide and copper iron sulphide, are shown ...
I. G. AUSTIN +2 more
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Anodic electrochemistry of chalcopyrite
Journal of Applied Electrochemistry, 1979The anodic behaviour of chalcopyrite in 1 M H2SO4 and 1 M HCl was studied by linear sweep voltammetry and potentiostatic electrolysis. Voltammograms with a fresh surface showed a small prewave, attributed to a surface oxidation process, followed by a region of active dissolution characterized by a steeply rising anodic current.
T. Biegler, D. A. Swift
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Thermodynamic investigations on chalcopyrite
Metallurgical Transactions B, 1975The vapor pressures of sulfur in equilibrium with various compositions within the Cu−Fe−S system were measured by a molecular absorption technique. Measurements were made as functions of temperature for the single phase compositions CuFeS1.62, CuFeS1.70, CuFeS1.80 and CuFeS1.90, for the two-phase fields bornite+chalcopyrite and pyrrhotite+chalcopyrite,
J. Paul Pemsler, Carl Wagner
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Hydrothermal synthesis of chalcopyrite
Economic Geology, 1966Natural chalcopyrite was dissolved by NaCl solution at the warmer end of a reaction vessel and synthetic chalcopyrite was precipitated at the cooler end at temperatures of 400 degrees -500 degrees C. No transfer occurred with pure water.
W. M. Barnard, P. A. Christopher
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Chalcopyrite leaching: The rate controlling factors
Geochimica et Cosmochimica Acta, 2010Abstract The processes that determine the rate of chalcopyrite leaching are central to understanding how chalcopyrite (CuFeS2) behaves under the environmentally adverse conditions of acid rock drainage. To this end the effect of the acid anion on chalcopyrite leach rates using a variety of acidic media (H2SO4, HClO4, HCl and H2SO4 with 0.25 M NaCl ...
J. Li +4 more
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Chloride leaching for chalcopyrite
2009Two new process flowsheets have been developed which combine chloride leaching for chalcopyrite with solvent extraction, to selectively transfer copper to a conventional sulfate electrowinning circuit. Both models were designed to address the common chloride hydromet problem of product impurity, and they differ with respect to iron deportment. Chloride
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Ternary chalcopyrite compounds
Progress in Crystal Growth and Characterization, 1979Brian R. Pamplin +2 more
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2017
Thin-film chalcopyrite based Cu(In;Ga)Se2 solar cells with a metal wrap through interconnection were investigated by non-destructive methods in our research. The primary focus of this investigation was a detection and a localization of microstructural defects in this type of Cu(In;Ga)Se2 solar cells.
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Thin-film chalcopyrite based Cu(In;Ga)Se2 solar cells with a metal wrap through interconnection were investigated by non-destructive methods in our research. The primary focus of this investigation was a detection and a localization of microstructural defects in this type of Cu(In;Ga)Se2 solar cells.
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2010
The anodic dissolution of chalcopyrite has been examined in chloride and sulphate solutions from 20°C to 175°C. In chloride the yield of elemental sulphur is nearly 100%, whereas in sulphate solutions it is 75% or less, the remainder being oxidized. It is postulated that in sulphate solutions the copper dissolves as a thiosulphate complex, which can ...
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The anodic dissolution of chalcopyrite has been examined in chloride and sulphate solutions from 20°C to 175°C. In chloride the yield of elemental sulphur is nearly 100%, whereas in sulphate solutions it is 75% or less, the remainder being oxidized. It is postulated that in sulphate solutions the copper dissolves as a thiosulphate complex, which can ...
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