Fundamentals of the CdTe and CdZnTe crystal growth
CNRS, Laboratoire de Physique des Solides et de Cristallogenese, 1 Place Aristide Briand, Meudon F 92195, France
The characteristics of the Cd and Te atoms make the Cd-Te chemical bond of iono-covalent nature with a pretty high ionicity of 0.55 that conditions most of the properties of CdTe and even its growth. As a result of this iono-covalent bond, a sharp liquidus compared to III-Vs, a wide homogeneity range (some 1018 cm-3), a retrograde solidus shape, a low thermal conductivity and pre-transition phenomena are as many severe obstacles having a strong influence on the melt growth of CdTe and making it difficult to obtain large crystals of high quality. That is why just about all the techniques of growth of semiconductor materials have been applied to CdTe!
Presentation: invited oral at NATO Advanced Research Workshop, by Robert Triboulet
See On-line Journal of NATO Advanced Research Workshop
Submitted: 2004-08-10 22:08 Revised: 2009-06-08 12:55