2–6 Jun 2025
Nikhef, Amsterdam
Europe/Amsterdam timezone

Mechanisms of proton irradiation-induced defects on the electrical performance of 4H-SiC PIN detectors

5 Jun 2025, 16:50
20m
Nikhef, Amsterdam

Nikhef, Amsterdam

WG6 - Wide bandgap materials WG6/WP3 - Non-silicon-based detectors

Speaker

Zaiyi Li (Chinese Academy of Sciences (CN))

Description

Silicon Carbide (SiC) demonstrates significant potential for high-energy particle detection in complex radiation environments due to its exceptional radiation resistance, high thermal conductivity, and fast response. 4H-SiC PINs fabricated by Nanjing University were irradiated by 80-MeV protons to investigate the irradiation effects. The irradiated PINs showed a decrease in leakage current and lost typical capacitance-voltage characteristics. The deep levels and minority carrier lifetime were measured by DLTS and TRPL. A Deep-Level Compensation Model (DLCM) was established using open source software RASER to simulate I-V and C-V characteristics under proton irradiation up to $7.8\times10^{14} n_{eq}/cm^2$. Simulation result shows the electric field changed due to compensation effect after irradiation, and caused the decrease of leakage current.

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

Zaiyi Li (Chinese Academy of Sciences (CN))

Co-authors

Hai Lu (Nanjing University (CN)) Haolan Qu (ShanghaiTech University (CN)) Jiaxiang Chen (Shenzhen Pinghu Laboratory (CN)) Peilian Liu (Chinese Academy of Sciences (CN)) Xin Shi (Chinese Academy of Sciences (CN)) Xinbo Zou (ShanghaiTech University (CN)) Xiyuan Zhang (Chinese Academy of Sciences (CN))

Presentation materials