1988 | OriginalPaper | Buchkapitel
Metastabile and Multiply-Charged Individual Defects at the Si:SiO2 Interface
verfasst von : M. J. Kirton, M. J. Uren, S. Collins
Erschienen in: The Physics and Technology of Amorphous SiO2
Verlag: Springer US
Enthalten in: Professional Book Archive
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In small-area silicon metal-oxide-semiconductor field-effect transistors (MOSFETs), the fluctuating occupancy of individual Si:SiO2 interface states generates Random Telegraph Signals (RTSs) in the drain current. We have observed a new class of RTS which exhibits anomalous behaviour. We demonstrate that these signals are due to individual interface states which can exist in two or more charge-equivalent metastable states. We present results on a single defect which exhibits two-electron capture, metastability and negative-U-like behaviour.