Direct Measurement of Active Near-Interface Traps in the Strong-Accumulation Region of 4H-SiC MOS Capacitors

Autor: Peyush Pande, Sima Dimitrijev, Daniel Haasmann, Hamid Amini Moghadam, Philip Tanner, Jisheng Han
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: IEEE Journal of the Electron Devices Society, Vol 6, Pp 468-474 (2018)
Druh dokumentu: article
ISSN: 2168-6734
DOI: 10.1109/JEDS.2018.2820729
Popis: This brief presents direct electrical measurement of active defects in the strong-accumulation region of N-type 4H-SiC MOS capacitors, which corresponds to the strong-inversion region of N-channel MOSFETs. The results demonstrate the existence of an active defect in the gate oxide, located very close to the SiC surface, with localized energy levels between 0.13 eV and 0.23 eV above the bottom of the conduction band. The observed spatial and energy localizations indicates that this is a well-defined defect.
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