Prospects of In/CdTe X- and γ-ray detectors with MoO Ohmic contacts

Olena L. Maslyanchuk; Mykhailo M. Solovan; Eduard V. Maistruk; Viktor V. Brus; Pavlo D. Maryanchuk; Volodymyr A. Gnatyuk; Toru Aoki

doi:10.1117/12.2305085

Prospects of In/CdTe X- and γ-ray detectors with MoO Ohmic contacts

Olena L. Maslyanchuk, Mykhailo M. Solovan, Eduard V. Maistruk, Viktor V. Brus, Pavlo D. Maryanchuk, Volodymyr A. Gnatyuk, Toru Aoki

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

Abstract

The present paper analyzes the charge transport mechanisms and spectrometric properties of In/CdTe/MoOx heterojunctions prepared by magnetron sputtering of indium and molybdenum oxide thin films onto semi-insulating p-type single-crystal CdTe semiconductor, produced by Acrorad Co. Ltd. Current-voltage characteristics of the detectors at different temperatures were investigated. The charge transport mechanisms in the heterostructures under investigation were determined: the generation-recombination in the space charge region (SCR) at relatively low voltages and the space charge limited currents at high voltages. The spectra of ₁₃₇Cs and ₂₄₁Am isotopes taken at different applied bias voltages are presented. It is shown that the In/CdTe/MoOx structures can be used as X/γ-ray detectors in the spectrometric mode.

Original language	English
Title of host publication	Thirteenth International Conference on Correlation Optics
Editors	Oleg V. Angelsky
Publisher	SPIE
ISBN (Electronic)	9781510617278
DOIs	https://doi.org/10.1117/12.2305085
Publication status	Published - 2018
Externally published	Yes
Event	13th International Conference on Correlation Optics - Chernivtsi, Ukraine Duration: Sep 11 2017 → Sep 15 2017

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	10612
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	13th International Conference on Correlation Optics
Country	Ukraine
City	Chernivtsi
Period	9/11/17 → 9/15/17

Keywords

CdTe diodes
Charge transport mechanisms
Energy spectrum
Generation-recombination in the space charge region
Minority carrier injection
Space charge limited current
X- and γ-ray detectors

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Access to Document

10.1117/12.2305085

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Cite this

Maslyanchuk, O. L., Solovan, M. M., Maistruk, E. V., Brus, V. V., Maryanchuk, P. D., Gnatyuk, V. A., & Aoki, T. (2018). Prospects of In/CdTe X- and γ-ray detectors with MoO Ohmic contacts. In O. V. Angelsky (Ed.), Thirteenth International Conference on Correlation Optics [106120V] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10612). SPIE. https://doi.org/10.1117/12.2305085

Prospects of In/CdTe X- and γ-ray detectors with MoO Ohmic contacts. / Maslyanchuk, Olena L.; Solovan, Mykhailo M.; Maistruk, Eduard V.; Brus, Viktor V.; Maryanchuk, Pavlo D.; Gnatyuk, Volodymyr A.; Aoki, Toru.

Thirteenth International Conference on Correlation Optics. ed. / Oleg V. Angelsky. SPIE, 2018. 106120V (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10612).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Maslyanchuk, OL, Solovan, MM, Maistruk, EV, Brus, VV, Maryanchuk, PD, Gnatyuk, VA & Aoki, T 2018, Prospects of In/CdTe X- and γ-ray detectors with MoO Ohmic contacts. in OV Angelsky (ed.), Thirteenth International Conference on Correlation Optics., 106120V, Proceedings of SPIE - The International Society for Optical Engineering, vol. 10612, SPIE, 13th International Conference on Correlation Optics, Chernivtsi, Ukraine, 9/11/17. https://doi.org/10.1117/12.2305085

Maslyanchuk, Olena L. ; Solovan, Mykhailo M. ; Maistruk, Eduard V. ; Brus, Viktor V. ; Maryanchuk, Pavlo D. ; Gnatyuk, Volodymyr A. ; Aoki, Toru. / Prospects of In/CdTe X- and γ-ray detectors with MoO Ohmic contacts. Thirteenth International Conference on Correlation Optics. editor / Oleg V. Angelsky. SPIE, 2018. (Proceedings of SPIE - The International Society for Optical Engineering).

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abstract = "The present paper analyzes the charge transport mechanisms and spectrometric properties of In/CdTe/MoOx heterojunctions prepared by magnetron sputtering of indium and molybdenum oxide thin films onto semi-insulating p-type single-crystal CdTe semiconductor, produced by Acrorad Co. Ltd. Current-voltage characteristics of the detectors at different temperatures were investigated. The charge transport mechanisms in the heterostructures under investigation were determined: the generation-recombination in the space charge region (SCR) at relatively low voltages and the space charge limited currents at high voltages. The spectra of 137Cs and 241Am isotopes taken at different applied bias voltages are presented. It is shown that the In/CdTe/MoOx structures can be used as X/γ-ray detectors in the spectrometric mode.",

keywords = "CdTe diodes, Charge transport mechanisms, Energy spectrum, Generation-recombination in the space charge region, Minority carrier injection, Space charge limited current, X- and γ-ray detectors",

author = "Maslyanchuk, {Olena L.} and Solovan, {Mykhailo M.} and Maistruk, {Eduard V.} and Brus, {Viktor V.} and Maryanchuk, {Pavlo D.} and Gnatyuk, {Volodymyr A.} and Toru Aoki",

note = "Funding Information: This research was supported by the NATO Science for Peace and Security Programme (Grant No NUKR.SFPP 984705, Project “A Sensor Network for the Localization and Identification of Radioactive Sources” (SENERA)). V.V. Brus thanks Alexander-von-Humboldt Foundation for financial support.; 13th International Conference on Correlation Optics ; Conference date: 11-09-2017 Through 15-09-2017",

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AU - Brus, Viktor V.

AU - Maryanchuk, Pavlo D.

AU - Gnatyuk, Volodymyr A.

AU - Aoki, Toru

N1 - Funding Information: This research was supported by the NATO Science for Peace and Security Programme (Grant No NUKR.SFPP 984705, Project “A Sensor Network for the Localization and Identification of Radioactive Sources” (SENERA)). V.V. Brus thanks Alexander-von-Humboldt Foundation for financial support.

PY - 2018

Y1 - 2018

N2 - The present paper analyzes the charge transport mechanisms and spectrometric properties of In/CdTe/MoOx heterojunctions prepared by magnetron sputtering of indium and molybdenum oxide thin films onto semi-insulating p-type single-crystal CdTe semiconductor, produced by Acrorad Co. Ltd. Current-voltage characteristics of the detectors at different temperatures were investigated. The charge transport mechanisms in the heterostructures under investigation were determined: the generation-recombination in the space charge region (SCR) at relatively low voltages and the space charge limited currents at high voltages. The spectra of 137Cs and 241Am isotopes taken at different applied bias voltages are presented. It is shown that the In/CdTe/MoOx structures can be used as X/γ-ray detectors in the spectrometric mode.

AB - The present paper analyzes the charge transport mechanisms and spectrometric properties of In/CdTe/MoOx heterojunctions prepared by magnetron sputtering of indium and molybdenum oxide thin films onto semi-insulating p-type single-crystal CdTe semiconductor, produced by Acrorad Co. Ltd. Current-voltage characteristics of the detectors at different temperatures were investigated. The charge transport mechanisms in the heterostructures under investigation were determined: the generation-recombination in the space charge region (SCR) at relatively low voltages and the space charge limited currents at high voltages. The spectra of 137Cs and 241Am isotopes taken at different applied bias voltages are presented. It is shown that the In/CdTe/MoOx structures can be used as X/γ-ray detectors in the spectrometric mode.

KW - CdTe diodes

KW - Charge transport mechanisms

KW - Energy spectrum

KW - Generation-recombination in the space charge region

KW - Minority carrier injection

KW - Space charge limited current

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