The Large Hadron Collider (LHC) running at CERN will soon be upgraded to increase its luminosity giving rise to radiations reaching the level of GigaRad Total Ionizing Dose (TID). This paper investigates the impact of such high radiation on transistors fabricated in a commercial 28 nm bulk CMOS process with the perspective of using it for the future silicon-based detectors. The DC electrical behavior of nMOSFETs is studied up to 1 Grad TID. All tested devices demonstrate to withstand that dose without any radiation-hard layout techniques. In spite of that, they experience a significant drain leakage current increase which may affect normal device operation. In addition, a moderate threshold voltage shift and subthreshold slope degradation is observed. These phenomena have been linked to radiation-induced effects like interface and switching oxide traps, together with parasitic side-wall transistors.

Pezzotta, A., Zhang, C., Jazaeri, F., Bruschini, C., Borghello, G., Faccio, F., et al. (2016). Impact of GigaRad Ionizing Dose on 28 nm bulk MOSFETs for future HL-LHC. In European Solid-State Device Research Conference (pp.146-149). Editions Frontieres [10.1109/ESSDERC.2016.7599608].

Impact of GigaRad Ionizing Dose on 28 nm bulk MOSFETs for future HL-LHC

Pezzotta A.;Baschirotto A.;
2016

Abstract

The Large Hadron Collider (LHC) running at CERN will soon be upgraded to increase its luminosity giving rise to radiations reaching the level of GigaRad Total Ionizing Dose (TID). This paper investigates the impact of such high radiation on transistors fabricated in a commercial 28 nm bulk CMOS process with the perspective of using it for the future silicon-based detectors. The DC electrical behavior of nMOSFETs is studied up to 1 Grad TID. All tested devices demonstrate to withstand that dose without any radiation-hard layout techniques. In spite of that, they experience a significant drain leakage current increase which may affect normal device operation. In addition, a moderate threshold voltage shift and subthreshold slope degradation is observed. These phenomena have been linked to radiation-induced effects like interface and switching oxide traps, together with parasitic side-wall transistors.
paper
28nm bulk CMOS; high-K; HL-LHC; MOSFET; radiation; TID; total ionizing dose
English
46th European Solid-State Device Research Conference, ESSDERC 2016 12-15 September
2016
European Solid-State Device Research Conference
2016
2016-
146
149
7599608
none
Pezzotta, A., Zhang, C., Jazaeri, F., Bruschini, C., Borghello, G., Faccio, F., et al. (2016). Impact of GigaRad Ionizing Dose on 28 nm bulk MOSFETs for future HL-LHC. In European Solid-State Device Research Conference (pp.146-149). Editions Frontieres [10.1109/ESSDERC.2016.7599608].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/290461
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