Semiconductor Device and Method of Forming the Same

摘要

A method of forming a semiconductor device includes forming a trench on a semiconductor substrate to define an active region, forming a radical oxide layer on a sidewall and a bottom surface of the trench, and forming a nitride layer on the radical oxide layer. The conduction band offset of the radical oxide layer is greater than the conduction band offset of a thermal oxide layer having the same thickness as the radical oxide layer.