2–6 Dec 2024
CERN
Europe/Zurich timezone

Carrier recombination characteristics in neutron irradiated Si at extreme fluences

4 Dec 2024, 09:20
20m
500/1-001 - Main Auditorium (CERN)

500/1-001 - Main Auditorium

CERN

400
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WG3 Radiation Damage - Extreme Fluence WG3 - Radiation Damage

Speaker

Tomas Ceponis (Vilnius University)

Description

The carrier recombination properties of semiconductors are critically influenced by defect species introduced by irradiations. In particle detectors, a reduction in carrier lifetime correlates with the degradation of charge collection efficiency and with an increase of leakage current. To develop radiation hard particle sensors and to predict variations of sensor functional parameters with aging, the investigation of recombination processes in pristine and irradiated detector materials is of paramount importance.
In this talk, carrier recombination characteristics in Si, irradiated by reactor neutrons up to extreme fluences (1018 cm-2), will be considered. The results were obtained by the contactless microwave probed photoconductivity transients technique and the pump-probe setup by employing femtosecond laser pulses.

Type of presentation (in-person/online) in-person presentation
Type of presentation (I. scientific results or II. project proposal) I. Presentation on scientific results

Author

Tomas Ceponis (Vilnius University)

Co-authors

Eugenijus Gaubas (Vilnius University (LT)) Igor Mandic (Jozef Stefan Institute (SI)) Dr Jevgenij Pavlov (Vilnius University) Dr Kazimieras Nomeika (Vilnius University) Mr Kestutis Zilinskas (Vilnius University) Laimonas Deveikis (Vilnius University (LT)) Margarita Biveinyte (Vilnius University (LT)) Vytautas Rumbauskas (Vilnius University (LT))

Presentation materials