Effect of contact preparation on the profile of the electric field in CdZnTe detectors
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F13%3A10190133" target="_blank" >RIV/00216208:11320/13:10190133 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1088/0022-3727/46/39/395102" target="_blank" >http://dx.doi.org/10.1088/0022-3727/46/39/395102</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/0022-3727/46/39/395102" target="_blank" >10.1088/0022-3727/46/39/395102</a>
Alternative languages
Result language
angličtina
Original language name
Effect of contact preparation on the profile of the electric field in CdZnTe detectors
Original language description
We used the transient-current technique to delineate the effects of different contact metals on the formation of space charge and on the profiles of the electric field in CdZnTe radiation detectors. In contrast to existing results on the polarization ofsemiconductor radiation detectors, we find that detectors with ohmic (Au/Au) contacts may experience a larger distortion of the internal electric field than those having Schottky (Au/In) contacts. We explain this difference by postulating the presence ofa deep hole trap (E_T) below the Fermi energy (E_F), which captures holes generated by the weakly injecting Au anode. The observed behaviour was described successfully by a numerical model relating the energy difference between E_T and E_F and the bandbending at the contacts. We also present results on aging effects that limit the detector's performance and stability over long times.
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
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Physics D - Applied Physics
ISSN
0022-3727
e-ISSN
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Volume of the periodical
46
Issue of the periodical within the volume
39
Country of publishing house
GB - UNITED KINGDOM
Number of pages
6
Pages from-to
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UT code for WoS article
000324810400004
EID of the result in the Scopus database
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