TY - JOUR
T1 - Flexible Ag-ChG Radiation Sensors
T2 - Limit of Detection and Dynamic Range Optimization Through Physical Design Tuning
AU - Mahmud, A.
AU - Gonzalez Velo, Yago
AU - Saremi, M.
AU - Barnaby, Hugh
AU - Kozicki, Michael
AU - Holbert, Keith
AU - Mitkova, M.
AU - Alford, Terry
AU - Goryll, Michael
AU - Yu, W.
AU - Mahalanabis, D.
AU - Chen, W.
AU - Chamele, N.
AU - Taggart, J.
PY - 2016/7/18
Y1 - 2016/7/18
N2 - 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.
AB - 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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U2 - 10.1109/TNS.2016.2555920
DO - 10.1109/TNS.2016.2555920
M3 - Article
AN - SCOPUS:84978880700
JO - IEEE Transactions on Nuclear Science
JF - IEEE Transactions on Nuclear Science
SN - 0018-9499
ER -