Abstract
PMOSFET hot-carrier reliability is often proposed to he limited by negative oxide charge. We show that interface states determine the lifetime in deep submicron PMOSFETs. Clear evidence for additional positive oxide-charge generation is presented for the first time. The bias-length and time dependences are measured for all three degradation mechanisms. Combining these three mechanism describes the time dependence of PMOSFET degradation convincingly for many geometries at many bias conditions. >
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