Large-Area Semi-Insulating GaAs α Particle Detector with 44% Charge Collection Efficiency at 40 V

O. Sabag; S. Primo; E. Evenstein; M. Bin-Nun; M. Alefe; T. Lewi; D. Cohen-Elias

doi:10.1109/tns.2026.3691191

Large-Area Semi-Insulating GaAs α Particle Detector with 44% Charge Collection Efficiency at 40 V

O. Sabag
, S. Primo
, E. Evenstein
, M. Bin-Nun
, M. Alefe
, T. Lewi
, D. Cohen-Elias

Bar-Ilan University - The Alexander Kofkin Faculty of Engineering

Soreq Nuclear Research Center

Research output: Contribution to journal › Article › peer-review

Abstract

In this study, we report the fabrication and characterization of a large-area semi-insulating (S.I.) GaAs α-particle detector optimized for low-voltage operation. The detector features a one-inch diameter and an active layer ~60 μm thick, achieving a charge collection efficiency (CCE) of 44% at 40V bias. The fabrication of a large-area GaAs detector with such a thin active layer is technically challenging and is described in detail in this work.

Original language	English
Journal	IEEE Transactions on Nuclear Science
DOIs	https://doi.org/10.1109/tns.2026.3691191
State	Accepted/In press - 2026

Bibliographical note

Publisher Copyright:
© 1963-2012 IEEE.

Keywords

Alpha
GaAs
Particle Detector
Schottky

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10.1109/tns.2026.3691191

Cite this

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title = "Large-Area Semi-Insulating GaAs α Particle Detector with 44\% Charge Collection Efficiency at 40 V",

abstract = "In this study, we report the fabrication and characterization of a large-area semi-insulating (S.I.) GaAs α-particle detector optimized for low-voltage operation. The detector features a one-inch diameter and an active layer \textasciitilde{}60 μm thick, achieving a charge collection efficiency (CCE) of 44\% at 40V bias. The fabrication of a large-area GaAs detector with such a thin active layer is technically challenging and is described in detail in this work.",

keywords = "Alpha, GaAs, Particle Detector, Schottky",

author = "O. Sabag and S. Primo and E. Evenstein and M. Bin-Nun and M. Alefe and T. Lewi and D. Cohen-Elias",

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year = "2026",

doi = "10.1109/tns.2026.3691191",

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journal = "IEEE Transactions on Nuclear Science",

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AU - Sabag, O.

AU - Primo, S.

AU - Evenstein, E.

AU - Bin-Nun, M.

AU - Alefe, M.

AU - Lewi, T.

AU - Cohen-Elias, D.

PY - 2026

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AB - In this study, we report the fabrication and characterization of a large-area semi-insulating (S.I.) GaAs α-particle detector optimized for low-voltage operation. The detector features a one-inch diameter and an active layer ~60 μm thick, achieving a charge collection efficiency (CCE) of 44% at 40V bias. The fabrication of a large-area GaAs detector with such a thin active layer is technically challenging and is described in detail in this work.

KW - Alpha

KW - GaAs

KW - Particle Detector

KW - Schottky

UR - https://www.scopus.com/pages/publications/105039174793

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DO - 10.1109/tns.2026.3691191

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SN - 0018-9499

JO - IEEE Transactions on Nuclear Science

JF - IEEE Transactions on Nuclear Science

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Large-Area Semi-Insulating GaAs α Particle Detector with 44% Charge Collection Efficiency at 40 V

Abstract

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Keywords

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