Defect spectroscopy on 23 GeV Proton-Irradiated CZ Pad Diodes

20 Jun 2023, 10:20
20m
Conference Hall (Hotel Regent Porto Montenegro)

Conference Hall

Hotel Regent Porto Montenegro

Obala bb, Tivat 85320, Montenegro

Speaker

Niels Sorgenfrei (Albert Ludwigs Universitaet Freiburg (DE))

Description

This study focuses on investigating radiation-induced defects in CZ p-type silicon pad diodes by subjecting them to irradiation with 23$\,$GeV protons at various fluences.
Two different diode thicknesses were used: 100$\,$μm and 350$\,$μm. The irradiation fluences applied were 1E+13, 7E+13, and 4E+14$\,$p/cm$^2$.
The macroscopic (IV & CV) and microscopic (TSC) radiation-induced changes in the sensors were measured and analyzed.
The presented results include IV and CV measurements taken before and after irradiation, as well as the determination of defect concentrations and defect introduction rates through TSC measurements, utilizing electrical and optical filling techniques.
Additionally, the presence of a not yet understood negative peak spectrum observed in TSC measurements will be reported.

Author

Niels Sorgenfrei (Albert Ludwigs Universitaet Freiburg (DE))

Co-authors

Anja Himmerlich Mr Chuan Liao Eckhart Fretwurst (Hamburg University (DE)) Ioana Pintilie (National Inst. of Materials Physics (RO)) Dr Joern Schwandt (Hamburg University (DE)) Michael Moll (CERN) Moritz Wiehe (CERN) Yana Gurimskaya

Presentation materials