Project detail

Noise Spectroscopy of CdTe X-ray and Gamma-ray Detectors

Duration: 01.01.2010 — 31.12.2012

Funding resources

Czech Science Foundation - Postdoktorandské granty

- whole funder (2010-01-01 - not assigned)

On the project

The noise spectroscopy in time and frequency domain is one of the promising methods to provide a non-destructive characterisation of semiconductor materials and devices. The noise spectroscopy with 1/f noise as a quality indicator allows us to evaluate the quality of photo-conducting samples, namely quality of sample surface and sample contacts. The project will give us new information about source of 1/f noise and about deep defect levels and their effects on quality. All this information is very important in development of CdTe crystal growth technology and contacting technology. Results of low noise spectroscopy of CdTe detectors will help to optimize low noise contacts manufacturing technology.   Experimental results will be used to distinguish between McWhorter model in which 1/f type noise is a result of mobile carrier number fluctuations and Hooge model, which explains 1/f noise as mobility fluctuations.  The research will contribute to the development of the theory of 1/f noise origin and estimate the role of low frequency sources in materials and devices.

Keywords
Noise spectroscopy Low Frequency Noise defects

Mark

GPP102/10/P589

Default language

English

People responsible

Andreev Alexey, Ing., Ph.D. - principal person responsible

Units

Department of Physics
- beneficiary (2010-01-01 - not assigned)

Results

ANDREEV, A.; ŠIK, O.; GRMELA, L. Noise spectroscopy of high resistance CdTe detectors. In 33rd International Spring Seminar on Electronics Technology. Warsaw: Piotr Firek, 2010. p. 63-64. ISBN: 978-83-7207-874-2.
Detail

ŠIK, O. Ectectrical Properties Time Stability of Cadmium Telluride Based Radiation Detectors. In Proceedings of the 17th Conference STUDENT EEICT 2011. Brno: Novpress s.r.o., 2011. p. 381-386. ISBN: 978-80-214-4273-3.
Detail

ŠIK, O.; GRMELA, L. Charge transport properties and low frequency noise of Cadmium-Telluride based radiation detectors. In Proceedings of 5th Annual International Travelling Conference for Young Researchers and PhD Students. Prešov: Harmony Apeiron, 2011. p. 179-184. ISBN: 978-80-89347-05-6.
Detail

ANDREEV, A.; ŠIK, O.; GRMELA, L. Optimization of signal-to-noise ratio in CdTe radiation detectors. In ICNF2011: 2011 21st International Conference on Noise and Fluctuations. 1. Rio de Janeiro, Brazil: IEEE, 2012. p. 1-3. ISBN: 978-1-4577-0191-7.
Detail

ANDREEV, A.; ŠIK, O.; GRMELA, L. Transport characteristics of CdTe radiation detectors. In 34nd International Spring Seminar on Electronics Technology. 1. Košice, Slovakia: Prof. Alena Pietriková, 2011. p. 1-3. ISBN: 978-80-553-0646-9.
Detail

ELHADIDY, H.; ŠIKULA, J.; FRANC, J. Symmetrical current–voltage characteristic of a metal–semiconductor–metal structure of Schottky contacts and parameter retrieval of a CdTe structure. SEMICONDUCTOR SCIENCE AND TECHNOLOGY, 2011, vol. 27, no. 1, p. 1-6. ISSN: 0268-1242.
Detail

ANDREEV, A.; GRMELA, L.; MORAVEC, P.; BOSMAN, G.; ŠIKULA, J. Investigation of excess 1/f noise in CdTe single crystals. SEMICONDUCTOR SCIENCE AND TECHNOLOGY, 2010, vol. 2010(25), no. 5, p. 1-7. ISSN: 0268-1242.
Detail

Responsibility: Andreev Alexey, Ing., Ph.D.