Charge collection measurements of CdTe detectors using IBIC imaging method

Matti Kalliokoski; Erik Brücken; Maria Golovleva; Akiko Gädda; Jaakko Härkönen; Aneliya Karadzhinova-Ferrer; Vladyslav Litichevskyi; Panja Luukka; Jennifer Ott

doi:10.1109/NSSMIC.2018.8824290

Charge collection measurements of CdTe detectors using IBIC imaging method

Matti Kalliokoski, Erik Brücken, Maria Golovleva, Akiko Gädda, Jaakko Härkönen, Aneliya Karadzhinova-Ferrer, Vladyslav Litichevskyi, Panja Luukka, Jennifer Ott

Not published at Aalto University

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

Abstract

Ion beam induced current (IBIC) analysis allows to study the effects of various materials selection to the detector performance. We analysed Cadmium Telluride (CdTe) pad detectors which were passivated either by using aluminium nitride (AlN) or by aluminium oxide (Al₂O₃). By using microbeam with 2 MeV protons, we were able to measure various surface effects, the charge collection efficiency, and analyse the impact of surface defects which could reduce the detector performance in applications such as medical imaging. The detectors we measured had surface area of 1 cm × 1 cm, and thickness of 1 mm. Various bias settings were applied to allow detailed charge collection studies. In this paper we show some selected results of the IBIC measurements.

Original language	English
Title of host publication	2018 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2018 - Proceedings
Publisher	IEEE
ISBN (Electronic)	9781538684948
DOIs	https://doi.org/10.1109/NSSMIC.2018.8824290
Publication status	Published - 1 Nov 2018
MoE publication type	A4 Conference publication
Event	IEEE Nuclear Science Symposium and Medical Imaging Conference - Sydney, Australia Duration: 10 Nov 2018 → 17 Nov 2018

Conference

Conference	IEEE Nuclear Science Symposium and Medical Imaging Conference
Abbreviated title	NSS/MIC
Country/Territory	Australia
City	Sydney
Period	10/11/2018 → 17/11/2018

Keywords

CdTe
defects
IBIC

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10.1109/NSSMIC.2018.8824290

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Kalliokoski, M., Brücken, E., Golovleva, M., Gädda, A., Härkönen, J., Karadzhinova-Ferrer, A., Litichevskyi, V., Luukka, P., & Ott, J. (2018). Charge collection measurements of CdTe detectors using IBIC imaging method. In 2018 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2018 - Proceedings Article 8824290 IEEE. https://doi.org/10.1109/NSSMIC.2018.8824290

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abstract = "Ion beam induced current (IBIC) analysis allows to study the effects of various materials selection to the detector performance. We analysed Cadmium Telluride (CdTe) pad detectors which were passivated either by using aluminium nitride (AlN) or by aluminium oxide (Al2O3). By using microbeam with 2 MeV protons, we were able to measure various surface effects, the charge collection efficiency, and analyse the impact of surface defects which could reduce the detector performance in applications such as medical imaging. The detectors we measured had surface area of 1 cm × 1 cm, and thickness of 1 mm. Various bias settings were applied to allow detailed charge collection studies. In this paper we show some selected results of the IBIC measurements.",

keywords = "CdTe, defects, IBIC",

author = "Matti Kalliokoski and Erik Br{\"u}cken and Maria Golovleva and Akiko G{\"a}dda and Jaakko H{\"a}rk{\"o}nen and Aneliya Karadzhinova-Ferrer and Vladyslav Litichevskyi and Panja Luukka and Jennifer Ott",

year = "2018",

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language = "English",

booktitle = "2018 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2018 - Proceedings",

publisher = "IEEE",

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Kalliokoski, M, Brücken, E, Golovleva, M, Gädda, A, Härkönen, J, Karadzhinova-Ferrer, A, Litichevskyi, V, Luukka, P & Ott, J 2018, Charge collection measurements of CdTe detectors using IBIC imaging method. in 2018 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2018 - Proceedings., 8824290, IEEE, IEEE Nuclear Science Symposium and Medical Imaging Conference, Sydney, Australia, 10/11/2018. https://doi.org/10.1109/NSSMIC.2018.8824290

Charge collection measurements of CdTe detectors using IBIC imaging method. / Kalliokoski, Matti; Brücken, Erik; Golovleva, Maria et al.
2018 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2018 - Proceedings. IEEE, 2018. 8824290.

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

TY - GEN

T1 - Charge collection measurements of CdTe detectors using IBIC imaging method

AU - Kalliokoski, Matti

AU - Brücken, Erik

AU - Golovleva, Maria

AU - Gädda, Akiko

AU - Härkönen, Jaakko

AU - Karadzhinova-Ferrer, Aneliya

AU - Litichevskyi, Vladyslav

AU - Luukka, Panja

AU - Ott, Jennifer

PY - 2018/11/1

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N2 - Ion beam induced current (IBIC) analysis allows to study the effects of various materials selection to the detector performance. We analysed Cadmium Telluride (CdTe) pad detectors which were passivated either by using aluminium nitride (AlN) or by aluminium oxide (Al2O3). By using microbeam with 2 MeV protons, we were able to measure various surface effects, the charge collection efficiency, and analyse the impact of surface defects which could reduce the detector performance in applications such as medical imaging. The detectors we measured had surface area of 1 cm × 1 cm, and thickness of 1 mm. Various bias settings were applied to allow detailed charge collection studies. In this paper we show some selected results of the IBIC measurements.

AB - Ion beam induced current (IBIC) analysis allows to study the effects of various materials selection to the detector performance. We analysed Cadmium Telluride (CdTe) pad detectors which were passivated either by using aluminium nitride (AlN) or by aluminium oxide (Al2O3). By using microbeam with 2 MeV protons, we were able to measure various surface effects, the charge collection efficiency, and analyse the impact of surface defects which could reduce the detector performance in applications such as medical imaging. The detectors we measured had surface area of 1 cm × 1 cm, and thickness of 1 mm. Various bias settings were applied to allow detailed charge collection studies. In this paper we show some selected results of the IBIC measurements.

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KW - defects

KW - IBIC

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DO - 10.1109/NSSMIC.2018.8824290

M3 - Conference article in proceedings

BT - 2018 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2018 - Proceedings

PB - IEEE

T2 - IEEE Nuclear Science Symposium and Medical Imaging Conference

Y2 - 10 November 2018 through 17 November 2018

ER -

Charge collection measurements of CdTe detectors using IBIC imaging method

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