ИСТИНА

The physicochemical processes are studied in a new modification of Bridgman’s crystal growth by way of a "cassette" crystallization in the assembly of "Hele-Shaw" cells for producing the polycrystalline bismuth telluride, which is used for thermoelectric applications. The aim was associated with the study of heat and mass transfer processes for the elimination of an instability of polycrystalline growth in the form of dendritic formations. It was established an influence of a crystallization rate on a chemical and phase micro inhomogeneity arising in the polycrystalline bismuth telluride. Negative affection of a large crystallization rate on the thermoelectric and mechanical properties of grown bismuth telluride wafers is discussed. http://2020.eac4amitans.eu/index.php