Abstract
Some aspects of the thermodynamic state of CdTe crystals grown by different zone passing techniques (sealed ingot zone refining technique and THM in tellurium solvent) are considered with regard to the general objective of getting high resistivity crystals. A vapour growth technique, called sublimation THM, which reduces several drawbacks of classical THM using a tellurium solvent, is developed. The growth of semi-insulating Cd0, 9Hg0, 1Te crystals, with the aim of increasing the average atomic number of the material, is presented