Understanding of self-heating enhanced degradation in pLDMOSFETs by MR-DCIV method

Abstract

Self-heating enhanced degradation in pLDMOSFETs was studied by non-destructive MR-DCIV method. Due to self-heating effect in pLDMOSFETs, several times larger MR-DCIV degradation per finger was observed for multi-finger devices with higher temperature rise and less channel edge heat dissipation. Our study has shown that self-heating induced degradation shared the similar trends and mechanism to NBTI.