Evaluation of the quality of semi-insulating CdTe for radiation detectors by measurement of lux-ampere characteristics

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F11%3A10101034" target="_blank" >RIV/00216208:11320/11:10101034 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.nima.2010.06.135" target="_blank" >http://dx.doi.org/10.1016/j.nima.2010.06.135</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.nima.2010.06.135" target="_blank" >10.1016/j.nima.2010.06.135</a>

Result language

angličtina

Original language name

Evaluation of the quality of semi-insulating CdTe for radiation detectors by measurement of lux-ampere characteristics

Original language description

Accumulation of space charge on deep levels represents one of the major problems in fabrication of semi-insulating CdTe and CdZnTe X-ray and gamma-ray detectors, because it influences the applied electric field and can even result in a complete breakdownof the field in part of the sample (polarization and dead layer formation). The goal of the study was to evaluate possibilities of localization of areas of potential space charge accumulation in as grown crystals by steady state measurement of lux-ampere characteristics. All measurements were done at room temperature using He-Ne laser. Voltage was applied parallel to the direction of light propagation in the range 10-100 V. It was observed that all lux-ampere characteristics are sub-linear. Screening effects caused by space charge accumulated on deep levels explain these results. Crystals prepared by Vertical gradient freeze method in our laboratory are compared to a commercially available detector-grade sample prepared by Travelling h

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2011

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Nuclear Instruments & Methods in Physics Research - Section A

ISSN

0168-9002

e-ISSN

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Volume of the periodical

633

Issue of the periodical within the volume

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Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

3

Pages from-to

97-99

UT code for WoS article

000292782400030

EID of the result in the Scopus database

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