Reliability degradation of ultra-thin oxynitride and Al2O3 gate dielectric films owing to heavy-ion irradiation

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Reliability degradation of ultra-thin oxynitride and Al2O3 gate dielectric films owing to heavy-ion irradiation

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The charge-to-breakdown of 3.3 nm oxynitride films shows significant degradation after irradiation with 342 MeV Au ions. In contrast, 5.4 nm Al2O3 films exhibit much less degradation for similar heavy-ion stress.

Inspec keywords: semiconductor device reliability; Weibull distribution; radiation hardening (electronics); dielectric thin films; ion beam effects; silicon compounds; leakage currents; MOSFET; MOS capacitors; alumina

Other keywords: 5.4 nm; 3.3 nm; reliability degradation; single-event gate rupture; ultrathin oxynitride films; Al2O3; charge-to-breakdown; 342 MeV; heavy-ion irradiation; alumina gate dielectric films; SiON; MOS capacitors

Subjects: Insulated gate field effect transistors; Capacitors; Radiation effects (semiconductor technology); Metal-insulator-semiconductor structures

References

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      • M. Ceschia , A. Paccagnella , M. Turrini , A. Candelrori , G. Ghidini , J. Wyss . Heavy ion irradiation of thin gate oxide. IEEE Trans. Nucl. Sci. , 6 , 2648 - 2655
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      • Miranda, E., Sune, J.: `Analytical modeling of leakage current through multiple breakdown paths in SiO', IEEE 39th Annual Int. Reliability Physics Symp., 2001, Dallas, TX, USA, p. 367–379.
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