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Annealing Effects on Radiation-Hardened CMOS Image Sensors Exposed to Ultrahigh Total Ionizing Doses

Dewitte, Hugo and Rizzolo, Serena and Paillet, Philippe and Magnan, Pierre and Le Roch, Alexandre and Corbière, Franck and Molina, Romain and Girard, Sylvain and Allanche, Timothé and Muller, Cyprien and Desjonquères, Hortense and Macé, Jean Reynald and Baudu, Jean-Pierre and Flores, A. Saravia and Goiffon, Vincent Annealing Effects on Radiation-Hardened CMOS Image Sensors Exposed to Ultrahigh Total Ionizing Doses. (2020) IEEE Transactions on Nuclear Science, 67 (7). 1284-1292. ISSN 0018-9499

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Official URL: https://doi.org/10.1109/TNS.2020.3001618

Abstract

Capabilities of rad-hard electronics are often degraded by post-irradiation annealing, whose effects need to be considered in designing complex systems, such as CMOS image sensors (CISs). In particular, the commonly accepted behavior of annealing cannot be systematically assumed, because reverse annealing does not necessarily come from the degradation of the defects, but could be the result of defects annealing nonuniformities. This article provides an extensive study of the dark current and pixel readout electronic behavior of CISs during irradiation and annealing, in order to provide some insights on these annealing non-uniformities. The isochronal annealing performed up to 300 ◦C demonstrates that, up until a certain temperature, reverse annealing is almost always present, but the 300 ◦C annealing always heals the system very efficiently. When performed on specially designed gated pixels for ultrahigh dose applications, adding a N+ drain further mitigates the radiation effects along with the reverse annealing. This proves the efficiency of these rad-hard designs and calls for further research in this radiation-hardening direction.

Item Type:Article
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Agence Nationale pour la Gestion des Déchets Radioactifs - ANDRA (FRANCE)
Other partners > AREVA (FRANCE)
French research institutions > Commissariat à l'Energie Atomique et aux énergies alternatives - CEA (FRANCE)
French research institutions > Institut de Radioprotection et de Sûreté Nucléaire - IRSN (FRANCE)
Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
Other partners > OPTSYS (FRANCE)
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Deposited On:04 Nov 2020 15:17

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