A comparison of active near-interface traps in nitrided and as-grown gate oxides by the direct measurement technique

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Pande, P
Dimitrijev, S
Haasmann, D
Moghadam, HA
Tanner, P
Han, J
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2020
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Kyoto, Japan

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Abstract

This paper presents a comparative analysis of the electrically active near-interface traps, energetically located above the bottom of conduction band. Two different samples of N-type SiC MOS capacitors were fabricated with gate oxides grown in (1) dry O2 (as-grown) and (2) dry O2 annealed in nitric oxide (nitride). Measurements performed by the direct measurement method revealed that the traps located further away from the SiO2/SiC interface are removed by nitridation. A spatially localized behaviour of NITs is observed only in the nitrided gate oxide but not in the as-grown gate oxide.

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Materials Science Forum

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1004

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Physical chemistry

Materials engineering

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Pande, P; Dimitrijev, S; Haasmann, D; Moghadam, HA; Tanner, P; Han, J, A comparison of active near-interface traps in nitrided and as-grown gate oxides by the direct measurement technique, Materials Science Forum, 2020, 1004, pp. 635-641