@inproceedings{ed55dd2c84f64441af92fbb7baea8d65,
title = "Segregation and interface shape control during EDG growth of CZT crystals",
abstract = "Computational models are applied to analyze the segregation of zinc and the shape of the solid-liquid interface during the growth of Cadmium Zinc Telluride (CZT) via an electrodynamic gradient freeze (EDG) process. Validation of the computational model is presented via a comparison between predicted and experimentally measured zinc distributions. Analysis of a large-scale CZT EDG growth system, previously analyzed by Gasperino et al. (JCG 311, 2327-2335, 2009), shows anomalous zinc segregation that features anomalous, non-monotonic axial concentrations and several local minima and maxima radially across the boule. A mechanistic explanation is put forth for this effect based on the evolution of multi-cellular melt flow structures, a particularly common feature of CZT growth. Optimized EDG furnace profiles are presented that promote the growth of CZT crystals with a uniformly convex interface shape. Such interface shapes are expected to improve the single-crystalline yield of this material.",
keywords = "CZT, Crystal growth, computational modeling, furnace thermal profile, interface shape, zinc segregation",
author = "Derby, {Jeffrey J} and Nan Zhang and Andrew Yeckel",
year = "2011",
doi = "10.1117/12.896542",
language = "English (US)",
isbn = "9780819487520",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
booktitle = "Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIII",
note = "Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIII ; Conference date: 22-08-2011 Through 24-08-2011",
}