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Pixel pitch and particle energy influence on the dark current distribution of neutron irradiated CMOS image sensors

Belloir, Jean-Marc and Goiffon, Vincent and Virmontois, Cédric and Raine, Mélanie and Paillet, Philippe and Duhamel, Olivier and Gaillardin, Marc and Magnan, Pierre and Gilard, Olivier Pixel pitch and particle energy influence on the dark current distribution of neutron irradiated CMOS image sensors. (2016) Optics Express, 24 (4). 4299-4315. ISSN 1094-4087

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Official URL: https://doi.org/10.1364/OE.24.004299


The dark current produced by neutron irradiation in CMOS Image Sensors (CIS) is investigated. Several CIS with different photodiode types and pixel pitches are irradiated with various neutron energies and fluences to study the influence of each of these optical detector and irradiation parameters on the dark current distribution. An empirical model is tested on the experimental data and validated on all the irradiated optical imagers. This model is able to describe all the presented dark current distributions with no parameter variation for neutron energies of 14 MeV or higher, regardless of the optical detector and irradiation characteristics. For energies below 1 MeV, it is shown that a single parameter has to be adjusted because of the lower mean damage energy per nuclear interaction. This model and these conclusions can be transposed to any silicon based solid-state optical imagers such as CIS or Charged Coupled Devices (CCD). This work can also be used when designing an optical imager instrument, to anticipate the dark current increase or to choose a mitigation technique.

Item Type:Article
Additional Information:Thanks to Optical Society of America editor. The definitive version is available at : https://www.osapublishing.org/oe/abstract.cfm?uri=oe-24-4-4299
HAL Id:hal-01450930
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Commissariat à l'Energie Atomique et aux énergies alternatives - CEA (FRANCE)
French research institutions > Centre National d'Études Spatiales - CNES (FRANCE)
Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
Laboratory name:
Deposited On:31 Jan 2017 13:46

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