MODELING THE VERTICAL BRIDGMAN GROWTH OF CADMIUM ZINC TELLURIDE .1. QUASI-STEADY ANALYSIS OF HEAT-TRANSFER AND CONVECTION

A quasi-steady-state analysis of the vertical Bridgman growth of large -diameter, cadmium zinc telluride is conducted using a finite element model which accounts for the details of heat transfer, melt convection , and solid/liquid interface shape. Large radial gradients are shown t o dominate the temperature held in the solid, while convection flatten s the radial temperature distribution in the melt, Concave interface s hapes are predicted to arise from the thermal conductivity mismatch be tween solid and liquid. The shape of the solid/liquid interface is sen sitive to the growth rate due to the importance of latent heat release .