45纳米节点栅极电介质的NBTI免疫等离子体氮化

M. Tanaka, S. Koyama, E. Hasegawa, C. Olsen, S. Shishiguchi, M. Hane
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引用次数: 1

摘要

研究了45纳米节点CMOS富氮薄硅栅电介质的首次等离子体氮化工艺。该工艺制备的Tinv 1.8 nm几乎不存在gm的降解和Vth的移位,特别是在界面氮浓度高于传统工艺的情况下,具有更高的抗负偏置温度不稳定性(NBTI)的能力
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NBTI Immune First Plasma Nitridation SiON with Multiple Single-Wafer Tools for 45nm node Gate Dielectrics
Nitrogen-rich and thin SiON gate dielectrics process using first plasma nitridation approach has been examined for 45nm-node CMOS application. This new process provides Tinv 1.8 nm with almost no degradation of the gm and no shift of Vth, and especially exhibits the higher immunity of the negative bias temperature instability (NBTI) even though the interfacial nitrogen concentration was observed to be higher than that of the conventional SiON process
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