Surface and Bulk Leakage Current in Trench-Isolated LGADs: Implications for Self-induced Ghost Signal
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F10974938%3A_____%2F25%3A25_88_34" target="_blank" >RIV/10974938:_____/25:25_88_34 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1088/1748-0221/20/10/C10006" target="_blank" >https://doi.org/10.1088/1748-0221/20/10/C10006</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1748-0221/20/10/C10006" target="_blank" >10.1088/1748-0221/20/10/C10006</a>
Alternative languages
Result language
angličtina
Original language name
Surface and Bulk Leakage Current in Trench-Isolated LGADs: Implications for Self-induced Ghost Signal
Original language description
The research presented in this paper addresses several advanced and interconnected concepts in silicon detector physics, particularly bulk type inversion, guard ring (GR) leakage, and the distinction between surface and bulk leakage currents in the presence of defects and isolation structures but in absence of edge field termination structure (JTE). By studying the leakage current behavior, we explored the mechanisms behind self-induced signals, referred to as ghosts, in Trench-Isolated Low Gain Avalanche Diodes (Ti-LGADs). These ghost signals are enhanced when the innermost guard ring is left floating but are suppressed (or reduced below detectable levels) when the GR is biased to the same potential as the readout pad. This observation motivated a more systematic investigation of leakage current, aiming to disentangle the residual leakage contributions from the pad leakage in both irradiated and non-irradiated Ti-LGADs, fabricated within the RD50 and AIDAInnova productions at FBK, Trento. Our findings contribute to the ongoing R&D of radiation-tolerant Ti-LGADs for 4D tracking applications in future accelerator experiments.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
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Continuities
R - Projekt Ramcoveho programu EK
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Instrumentation
ISSN
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e-ISSN
1748-0221
Volume of the periodical
20
Issue of the periodical within the volume
10
Country of publishing house
GB - UNITED KINGDOM
Number of pages
9
Pages from-to
C10006 (1-9)
UT code for WoS article
001589123100001
EID of the result in the Scopus database
2-s2.0-105017841829