We report on n-channel Junction Field Effect Transistors fabricated on high resistivity silicon by means of a specially tailored radiation detector technology. This research activity is being carried out in the framework of a project aiming at the integration of read-out circuits in the same detector substrate. Possible applications are in the field of medical/industrial imaging, space and high energy physics experiments. The pre-existent fabrication process has been modified in several respects to enhance the device noise behavior. In particular, the new process features a high-energy (1 MeV) Boron implantation to obtain a deep p-well which ensures an effective isolation of the transistor from the substrate and a strong modulating effect on the current. Selected results from the experimental characterization of transistors and charge sensitive amplifiers are presented, showing a sizable enhancement in the noise performance with respect to previously available devices.

Low Noise Junction Field Effect Transistors in a Silicon Radiation Detector Technology

Dalla Betta, Gian Franco;Boscardin, Maurizio;Pancheri, Lucio;Piemonte, Claudio;Ratti, Lodovico;Zorzi, Nicola
2006

Abstract

We report on n-channel Junction Field Effect Transistors fabricated on high resistivity silicon by means of a specially tailored radiation detector technology. This research activity is being carried out in the framework of a project aiming at the integration of read-out circuits in the same detector substrate. Possible applications are in the field of medical/industrial imaging, space and high energy physics experiments. The pre-existent fabrication process has been modified in several respects to enhance the device noise behavior. In particular, the new process features a high-energy (1 MeV) Boron implantation to obtain a deep p-well which ensures an effective isolation of the transistor from the substrate and a strong modulating effect on the current. Selected results from the experimental characterization of transistors and charge sensitive amplifiers are presented, showing a sizable enhancement in the noise performance with respect to previously available devices.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11582/3038
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