Abstract
Single-crystal ingots of CdTe and Cd 0,96 Zn 0.04 Te 60-100 mm in diameter were grown by directional solidification using the self-seeding technique. The microstructure of the crystals was cheeked by optical microscopy, electron microscopy (TEM, SEM and EBIC), cathodoluminescence and X-ray diffraction. It was found that crystal perfection depends to a large measure on the temperature schedule during Lpostgrowth crystal cooling: special caution should be exercised in the temperature interval including the polymorphous transformation. A direct relationship between optical and electronic properties on the one hand and crystal microstructure on the other hand was established.
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