Heat transfer analysis of the Bridgman-Stockbarger configuration for crystal growth
1984; Elsevier BV; Volume: 67; Issue: 2 Linguagem: Inglês
10.1016/0022-0248(84)90176-3
ISSN1873-5002
AutoresTadeusz Jasiński, A. F. Witt, W.M. Rohsenow,
Tópico(s)Numerical methods in inverse problems
ResumoThe parametric behavior of radial temperature variations within the charge during crystal growth in a Bridgman-Stockbarger configuration is derived by a two-dimensional heat transfer model. By treating the charge and the crucible as a series of concentric fins which exchange heat radially with each other, useful solutions in analytical form are obtained. The model considers the effects of the length of an insulating zone between hot and cold regions of the furnace, thickness and thermal conductivity of a charge confining crucible, thermal coupling between the charge and the furnace, change in the thermal conductivity at the crystal-melt interface, and the generation of latent heat. Results show that the presence of a crucible diminishes the ability to control the shape of the growth interface through its position within the insulating zone and, for semiconductors, leads to a growth interface shape for which the crystal is concave.
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