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Proceedings Paper

Thermomechanical analysis in directional solidification of CdTe
Author(s): Frederick M. Carlson; Taipao Lee; John C. Moosbrugger; David J. Larson
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Paper Abstract

Thermoelastic calculations for CdTe grown by the vertical Bridgman method are presented. Finite element calculations are verified by some experimental data. Solidification interface velocity, charge temperature and stress distributions are computed for prescribed ampoule withdrawal rates and several ampoule support systems. The support systems include various materials and seed-wafer transition zone geometries. Crystal stress in excess of the critical resolved shear stress is used as the figure of merit to judge the performance of a particular system. Emphasis is focused on the transition region between the seed and wafer. A processing strategy is proposed and desirable support system characteristics are presented.

Paper Details

Date Published: 12 July 1996
PDF: 11 pages
Proc. SPIE 2809, Space Processing of Materials, (12 July 1996); doi: 10.1117/12.244328
Show Author Affiliations
Frederick M. Carlson, Clarkson Univ. (United States)
Taipao Lee, Clarkson Univ. (United States)
John C. Moosbrugger, Clarkson Univ. (United States)
David J. Larson, SUNY/Stony Brook (United States)

Published in SPIE Proceedings Vol. 2809:
Space Processing of Materials
Narayanan Ramachandran, Editor(s)

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