Вплив передростового відпалу вихідного матеріалу на властивості неочищених монокристалів телуриду кадмію, отриманих методом сублімації
The effect of high-temperature annealing of a nominally undoped CdTe charge under dynamic vacuum conditions on the electrical and optical properties of single crystals grown from this charge with the use of a modified physical vapor transport method has been examined. It is shown that the annealing...
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| Date: | 2012 |
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| Main Authors: | , , , |
| Format: | Article |
| Language: | Ukrainian English |
| Published: |
Publishing house "Academperiodika"
2012
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| Subjects: | |
| Online Access: | https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2021205 |
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| Journal Title: | Ukrainian Journal of Physics |
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Ukrainian Journal of Physics| Summary: | The effect of high-temperature annealing of a nominally undoped CdTe charge under dynamic vacuum conditions on the electrical and optical properties of single crystals grown from this charge with the use of a modified physical vapor transport method has been examined. It is shown that the annealing results in the disappearance or an extinction of chlorine-related lines in the low-temperature photoluminescence spectra and the absorption bands in the long-wavelength absorption-edge spectra of the crystals concerned, as well as in a drastic fall of their resistivity. The observed alterations are explained by a removal of the Cl impurity during the annealing owing to a high volatility of chlorine compounds. |
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