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Mathematical modelling of the vertical Bridgman growth of cadmium telluride

University of British Columbia

The temperature and stress fields for the Vertical Bridgman growth of CdTe were calculated using the finite element method. The critical resolved shear stress (CRSS) of CdTe was measured at elevated temperatures. The measured CRSS and the calculated shear stress were compared to determine the onset of dislocation formation in the crystal. The effect of furnace gradient, crucible velocity, hot furnace temperature and cold furnace temperature on the solid/liquid interface shape and calculated resolved shear stress were examined using the model. Etch pit density measurments were carried out in order to verify the stress model.

Text

2010-11-19

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http://hdl.handle.net/2429/30054

Materials Engineering

University of British Columbia

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