Study of degradation in channel initiated secondary electron injection regime

Abstract

This paper analyzes the Channel Initiated Secondary Electron injection mechanism and the resulting hot-carrier degradation in deep sub-micron n-channel MOSFETs. The correlation between gate (IG) and substrate current (IB) has been studied for different values of substrate bias. Stress and charge pumping measurements have been carried out to study the degradation under identical substrate bias and gate current conditions. Results show that under identical gate current (programming time for flash memory cells), the degradation is less for higher negative substrate bias.