Optimization of signal-to-noise ratio in CdTe radiation detectors

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F12%3APU101450" target="_blank" >RIV/00216305:26220/12:PU101450 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Optimization of signal-to-noise ratio in CdTe radiation detectors
Original language description
This paper studies the effect of depleted region on noise characteristics of CdTe and on signal-to-noise ratio. Measurements showed that dominant type of nose for the studied CdTe samples is low frequency noise. Its analysis indicates that the experimental value of noise is always much higher than the theoretical value. The voltage noise spectral density of low frequency noise is directly proportional to the depleted region width. This excess noise level is caused by very low concentration of free carriers within the depleted region. Excess value of noise leads to deterioration of signal-to-noise ratio. One of the ways in optimizing signal-to-noise ratio is to decrease depleted region width. This can be done for example by appropriate choosing dopantswhich will adjust Fermi level of CdTe.
Czech name
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Czech description
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Project
<a href="/en/project/GPP102%2F10%2FP589" target="_blank" >GPP102/10/P589: Noise spectroscopy of CdTe X-ray and gamma-ray detectors</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
ICNF2011: 2011 21st International Conference on Noise and Fluctuations
ISBN
978-1-4577-0191-7
ISSN
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e-ISSN
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Number of pages
3
Pages from-to
1-3
Publisher name
IEEE
Place of publication
Rio de Janeiro, Brazil
Event location
Rio de Janeiro
Event date
Jul 1, 2012
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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