Flexible Ag-ChG Radiation Sensors: Limit of Detection and Dynamic Range Optimization Through Physical Design Tuning

A. Mahmud; Yago Gonzalez Velo; M. Saremi; Hugh Barnaby; Michael Kozicki; Keith Holbert; M. Mitkova; Terry Alford; Michael Goryll; W. Yu; D. Mahalanabis; W. Chen; N. Chamele; J. Taggart

doi:10.1109/TNS.2016.2555920

Flexible Ag-ChG Radiation Sensors: Limit of Detection and Dynamic Range Optimization Through Physical Design Tuning

A. Mahmud, Yago Gonzalez Velo, M. Saremi, Hugh Barnaby, Michael Kozicki, Keith Holbert, M. Mitkova, Terry Alford, Michael Goryll, W. Yu, D. Mahalanabis, W. Chen, N. Chamele, J. Taggart

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

6 Scopus citations

Abstract

Silver-chalcogenide glass flexible sensors were tested to study the impact of physical design parameters on the performance characteristics of the sensors in response to ionizing radiation. Results show that by changing lateral spacing between adjacent electrodes, the limit of detection and dynamic range can be regulated. Likewise, by changing the diameter of the electrodes, the sensor high and low resistance states can be adjusted to a desired range. In contrast, the influence of the electrode diameter on the sensor performance characteristics was found to have less of an impact on sensor performance. Mechanisms for ion transport and reactions are investigated using TCAD simulations in which the standard statistics and transport equations for free carriers are simultaneously solved. The simulation results are qualitatively in a good agreement with experimental data.

Original language	English (US)
Article number	7514924
Pages (from-to)	2137-2144
Number of pages	8
Journal	IEEE Transactions on Nuclear Science
Volume	63
Issue number	4
DOIs	https://doi.org/10.1109/TNS.2016.2555920
State	Published - Aug 2016

Keywords

Chalcogenide glass (ChG)
TCAD simulation
dosimetry
dynamic range
flexible radiation sensor
gamma rays
limit of detection
polyethylene napthalate (PEN)

ASJC Scopus subject areas

Nuclear and High Energy Physics
Nuclear Energy and Engineering
Electrical and Electronic Engineering

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Mahmud, A., Gonzalez Velo, Y., Saremi, M., Barnaby, H., Kozicki, M., Holbert, K., Mitkova, M., Alford, T., Goryll, M., Yu, W., Mahalanabis, D., Chen, W., Chamele, N., & Taggart, J. (2016). Flexible Ag-ChG Radiation Sensors: Limit of Detection and Dynamic Range Optimization Through Physical Design Tuning. IEEE Transactions on Nuclear Science, 63(4), 2137-2144. Article 7514924. https://doi.org/10.1109/TNS.2016.2555920

Mahmud, A, Gonzalez Velo, Y, Saremi, M, Barnaby, H , Kozicki, M , Holbert, K, Mitkova, M, Alford, T , Goryll, M, Yu, W, Mahalanabis, D, Chen, W, Chamele, N & Taggart, J 2016, 'Flexible Ag-ChG Radiation Sensors: Limit of Detection and Dynamic Range Optimization Through Physical Design Tuning', IEEE Transactions on Nuclear Science, vol. 63, no. 4, 7514924, pp. 2137-2144. https://doi.org/10.1109/TNS.2016.2555920

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abstract = "Silver-chalcogenide glass flexible sensors were tested to study the impact of physical design parameters on the performance characteristics of the sensors in response to ionizing radiation. Results show that by changing lateral spacing between adjacent electrodes, the limit of detection and dynamic range can be regulated. Likewise, by changing the diameter of the electrodes, the sensor high and low resistance states can be adjusted to a desired range. In contrast, the influence of the electrode diameter on the sensor performance characteristics was found to have less of an impact on sensor performance. Mechanisms for ion transport and reactions are investigated using TCAD simulations in which the standard statistics and transport equations for free carriers are simultaneously solved. The simulation results are qualitatively in a good agreement with experimental data.",

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AU - Barnaby, Hugh

AU - Kozicki, Michael

AU - Holbert, Keith

AU - Mitkova, M.

AU - Alford, Terry

AU - Goryll, Michael

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AU - Mahalanabis, D.

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KW - limit of detection

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Flexible Ag-ChG Radiation Sensors: Limit of Detection and Dynamic Range Optimization Through Physical Design Tuning

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Keywords

ASJC Scopus subject areas

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