Thermochemistry in the system Cu--In--S at 298 K

Journal Article · Fri Nov 01 04:00:00 EST 1991 · Journal of Materials Research; (United States)

DOI:https://doi.org/10.1557/JMR.1991.2381· OSTI ID:6215689

Migge, H ^[1]

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1. Hahn-Meitner-Institut GmbH, Glienicker Strasse 100, D-1000 Berlin 39 (Germany)

A thermochemical analysis is performed in the system Cu--In--S at 298 K. Free energies of the compounds In{sub 6}S{sub 7}, In{sub 2.8}S{sub 4}, CuInS{sub 2}, CuIn{sub 5}S{sub 8}, and of the recently discovered CuIn{sub 2} have been estimated, the numerical values (kJ/mol) of which are {minus}1043{plus minus}21, {minus}556{plus minus}8.8, {minus}315{plus minus}54, {minus}1238{plus minus}113, and {minus}51{plus minus}26. A consistent set of data is used for the calculation of the Gibbs triangle as well as of the predominance area diagram. The results are in nearly complete agreement with the measurements published recently, in particular with those using the nuclear method of perturbed angular correlations (PAC). The compound CuInS{sub 2}, one of the possible base materials for thin film solar cells, is shown to equilibrate with nearly all of the compounds of the system. A nonvariant four-phase equilibrium CuIn{sub 2}--InS--In--CuInS{sub 2} is found at about 298 K. It is noted where more precise data are needed.

• OSTI ID: 6215689
• Journal Information: Journal of Materials Research; (United States), Journal Name: Journal of Materials Research; (United States) Vol. 6:11; ISSN JMREE; ISSN 0884-2914
• Country of Publication: United States
• Language: English

Related Subjects

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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
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CHEMICAL REACTIONS
COPPER COMPOUNDS
COPPER SULFIDES
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THERMOCHEMICAL PROCESSES
THERMODYNAMIC PROPERTIES
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