Photoconductivity Mapping of Semi-Insulating CdZnTe
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F11%3A10100828" target="_blank" >RIV/00216208:11320/11:10100828 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1109/TNS.2011.2147333" target="_blank" >http://dx.doi.org/10.1109/TNS.2011.2147333</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1109/TNS.2011.2147333" target="_blank" >10.1109/TNS.2011.2147333</a>
Alternative languages
Result language
angličtina
Original language name
Photoconductivity Mapping of Semi-Insulating CdZnTe
Original language description
Semi-insulating CdZnTe crystals were studied by photoconductivity mapping using both the contactless method and measurement with evaporated Au contacts. We evaluated the distribution of space charge analyzing the slope of lux-ampere characteristics. Mobility/lifetime product maps were extracted fitting the Hecht relation to voltampere characteristics measured with a weak light at wavelength 750 nm. Correlation analysis of contactless resistivity and photoconductivity maps shows, that both these parameters are anticorrelated. This fact can be explained by a shift of Fermi level changing the average occupation of a midgap level. A decrease of occupation with an increasing resistivity results in an increase of electron trapping and decreased photoconductivity. This explanation is supported by simulating the dependence of the photocurrent on the Fermi level position near the midgap using parameters of midgap levels assumed in state-of-the art radiation detectors.
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
<a href="/en/project/GAP102%2F10%2F0148" target="_blank" >GAP102/10/0148: Influence of Te inclusions on performance of CdTe and CdZnTe radiation detectors</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach
Others
Publication year
2011
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
58
Issue of the periodical within the volume
4
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
1953-1957
UT code for WoS article
000293977200010
EID of the result in the Scopus database
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