【摘要】 以等效氧化层厚度 (EOT)同为 2 .1nm的纯 Si O2 栅介质和 Si3N4 / Si O2 叠层栅介质为例 ,给出了恒定电压应力下超薄栅介质寿命预测的一般方法 ,并在此基础上比较了纯 Si O2 栅介质和 Si3N4 / Si O2 叠层栅介质在恒压应力下的寿命 .结果表明 ,Si3N4 / Si O2 叠层栅介质比同样 EOT的纯 Si O2 栅介质有更长的寿命 ,这说明 Si3N4 / Si O2 叠层栅介质有更高的可靠性 .更多还原

【Abstract】 Ultra-thin N/O stack gate dielectrics and pure oxide gate dielectrics with the same EOT (2.1nm) are used as the samples.A common way for the ultra-thin gate dielectrics lifetime projection with the CVS method is given.Based on this,the lifetime is compared between the ultra-thin N/O stack gate dielectrics and pure oxide gate dielectrics .The result shows that N/O stack gate dielectrics have much longer lifetime than pure oxide gate dielectrics of the same EOT,which also indicates that N/O stack gate dielectrics have better reliability than the pure oxide gate dielectrics do.更多还原