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The open source Sensor journal publishes a sub-electron sensitive image sensor paper "
The DEPFET Sensor-Amplifier Structure: A Method to Beat 1/f Noise and Reach Sub-Electron Noise in Pixel Detectors" by Gerhard Lutz, Matteo Porro, Stefan Aschauer, Stefan Wölfel, and Lothar Strüder from 1 PNSENSOR GmbH, München D-81739, Germany.
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The repetitive non-destructive readout (RNDR) DEPFET is an ideal central element for an active pixel sensor (APS) pixel. The theory has been derived thoroughly and results have been verified on RNDR-DEPFET prototypes. A charge measurement precision of 0.18 electrons has been achieved. The device is well-suited for spectroscopic X-ray imaging and for optical photon counting in pixel sensors, even at high photon numbers in the same cell."
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The concept of a DEPFET: The signal electrons are collected in a potential minimum (internal gate) located below the channel of a FET located on top of the fully depleted bulk. |
Thanks to BB for the link!
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