Room temperature formation of Cu{sub 3}Se{sub 2} by solid-state reaction between {alpha}-Cu{sub 2}Se and {alpha}-CuSe

Journal Article · Mon Nov 01 04:00:00 EST 2004 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2004.07.041· OSTI ID:20658165

Ohtani, T ^[1]; Shohno, M ^[1]

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1. Laboratory for Solid State Chemistry, Okayama University of Science, Ridai-cho 1-1, Okayama 700-0005 (Japan)

Upon being brought into contact with each other, {alpha}-Cu{sub 2}Se and {alpha}-CuSe pellets reacted entirely forming Cu{sub 3}Se{sub 2} at room temperature. After 10 days, the reaction was almost completed. Weight measurements revealed that copper atoms migrated from {alpha}-Cu{sub 2}Se to {alpha}-CuSe. Solid-state reactions were also observed in the ({alpha}-Cu{sub 2}Se+Cu{sub 3}Se{sub 2}) and ({alpha}-Cu{sub 2}Se+CuS) systems, but not in the (Cu{sub 3}Se{sub 2}+{alpha}-CuSe) (Cu{sub 2}S+CuS) and ({alpha}-CuSe+Cu{sub 2}S) systems. Therefore, the high ionic conductivity of copper ions in {alpha}- and {beta}-Cu{sub 2}Se is considered to be responsible for the solid-state reactions observed in these systems.

• OSTI ID: 20658165
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 11 Vol. 177; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
COPPER SELENIDES
COPPER SULFIDES
ELECTRON MICROPROBE ANALYSIS
IONIC CONDUCTIVITY
PELLETS
TEMPERATURE RANGE 0273-0400 K