Control of electric field in CdZnTe radiation detectors by above-bandgap light

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F15%3A10315432" target="_blank" >RIV/00216208:11320/15:10315432 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1063/1.4919073" target="_blank" >http://dx.doi.org/10.1063/1.4919073</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/1.4919073" target="_blank" >10.1063/1.4919073</a>

Result language

angličtina

Original language name

Control of electric field in CdZnTe radiation detectors by above-bandgap light

Original language description

We have studied the possibility of above bandgap light induced depolarization of CdZnTe planar radiation detector operating under high flux of X-rays by Pockels effect measurements. In this contribution, we show a similar influence of X-rays at 80 kVp and LED with a wavelength of 910 nm irradiating the cathode on polarization of the detector due to an accumulation of a positive space charge of trapped photo-generated holes. We have observed the depolarization of the detector under simultaneous cathode-site illumination with excitation LED at 910 nm and depolarization above bandgap LED at 640 nm caused by trapping of drifting photo-generated electrons. Although the detector current is quite high during this depolarization, we have observed that it decreases relatively fast to its initial value after switching off the depolarizing light. In order to get detailed information about physical processes present during polarization and depolarization and, moreover, about associated deep levels

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

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2015

Confidentiality

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

Name of the periodical

Journal of Applied Physics

ISSN

0021-8979

e-ISSN

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Volume of the periodical

117

Issue of the periodical within the volume

16

Country of publishing house

US - UNITED STATES

Number of pages

7

Pages from-to

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UT code for WoS article

000353831100072

EID of the result in the Scopus database

2-s2.0-84929096177