Elimination of Te Inclusions in Cd1-xZnxTe Crystals by Short-term Thermal Annealing
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F12%3A10127581" target="_blank" >RIV/00216208:11320/12:10127581 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1109/TNS.2012.2187069" target="_blank" >http://dx.doi.org/10.1109/TNS.2012.2187069</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1109/TNS.2012.2187069" target="_blank" >10.1109/TNS.2012.2187069</a>
Alternative languages
Result language
angličtina
Original language name
Elimination of Te Inclusions in Cd1-xZnxTe Crystals by Short-term Thermal Annealing
Original language description
The presence of Te inclusions degrades the quality of today's CdZnTe (CZT) crystals used for X-and gamma-ray detectors; both their sizes and concentrations densities must be reduced. Over the past years, many researchers proposed using long-term annealing (>24 h) under Cd vapor pressure to reduce or even eliminate the inclusions visible under IR microscopes. We annealed detector-grade CZT samples for periods of 15 to 60 min under Cd-, Zn-, or Te-overpressure or in vacuum at 1000-1200 K. We determined the optimal temperature, duration, and the vapor atmosphere for such high-temperature annealing, typically at similar to 1100 K for 0.5-1.0 h. The results were very promising in eliminating Te-rich inclusions, even on twins where the inclusions are more stable than in the unperturbed lattice; indeed, we saw almost no inclusions whatsoever by IR transmission microscopy after such annealing. We note that eliminating inclusions at lower temperatures takes much longer. However, annealing under
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
IEEE Transactions on Nuclear Science
ISSN
0018-9499
e-ISSN
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Volume of the periodical
59
Issue of the periodical within the volume
2
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
256-263
UT code for WoS article
000302953700002
EID of the result in the Scopus database
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