Thermodynamic aspects of carbon incorporation into ZnSe and CdSe crystals


Institute for Single Crystals, National Academy of Sciences of Ukraine, 60 Lenin Ave., 310001 Kharkiv, Ukraine

Received May 27, 1998

Thermodynamic probability of carbon incorporation into crystals grown in graphite crucibles is considered taking melted and crystalline ZnSe and CdSe by way of isobaric-isothermal potentials calculation for a system of equations of supposed reactions between the salts and solid and gaseous carbon. The possibility of carbon incorporation due to its interaction with Se and Se2. Chemical processes resulting in a potential formation of selenium carbides acting as carbon transporting agents in a temperature gradient have been revealed. Carbon content in ZnSe crystals has been determined by direct chemical analysis as well as using the carbon concentrating by way of acid treatment.

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