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Measurement of switching performance of pixelated silicon sensor integrated with field effect transistor

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Title
Measurement of switching performance of pixelated silicon sensor integrated with field effect transistor
Author(s)
Hyeyoung Lee; Jin-A Jeon; Kim J.; Hyunsu Lee; Moo Hyun Lee; Lee M.; Lee S.; Park H.; Song S.
Publication Date
2019-12
Journal
SENSORS, v.19, no.24, pp.5580 -
Publisher
MDPI
Abstract
© 2019 by the authors. Licensee MDPI, Basel, Switzerland.Silicon shows very high detection efficiency for low-energy photons, and the silicon pixel sensor provides high spatial resolution. Pixelated silicon sensors facilitate the direct detection of low-energy X-ray radiation. In this study, we developed junction field effect transistors (JFETs) that can be integrated into a pixelated silicon sensor to effectively handle many signal readout channels due to the pixelated structure without any change in the sensor resolution; this capability of the integrated system arises from the pixelated structure of the sensor. We focused on optimizing the JFET’s switching function, and simulated JFETs with different fabrication parameters. Furthermore, prototype JFET switches were designed and fabricated on the basis of the simulated results. It is important not only to keep the low leakage currents in the JFET but also reduce the current flow as much as possible by providing a high resistance when the JFET switch is off. We determined the optimal fabrication conditions for the effective switching of the JFETs. In this paper, we present the results of the measurement of the switching capability of the fabricated JFETs for various design variables and fabrication conditions
URI
https://pr.ibs.re.kr/handle/8788114/6707
ISSN
1424-8220
Appears in Collections:
Center for Underground Physics(지하실험 연구단) > Journal Papers (저널논문)
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