Reliability of HfSiON as gate dielectric for advanced CMOS technology

Autor: Carlos H. Diaz, Howard Wang, Min-Hwa Chi, Chien-Tai Chan, A.S. Oates, Huan-Just Lin, Shih-Chang Chen, Ching-Wei Tsai, Ying Jin, Hun-Jan Tao, Mong-Song Liang, Shang-Jr Chen, Tongchern Ong
Rok vydání: 2005
Předmět:
Zdroj: Digest of Technical Papers. 2005 Symposium on VLSI Technology, 2005..
Popis: Optimizing nitrogen incorporation in HfSiON gate dielectric can improve overall reliability, e.g. nMOS PBTI lifetime, hot carrier (HC) lifetime, time-to-breakdown (tBD), without adverse effects on pMOS NBT1 lifetime and electron/hole mobility. The improvement is attributed to excellent thermal stability against partial-crystallization after 1100/spl deg/C annealing, and the concomitantly reduced trap generation minimizes stress induced leakage current (SILC) and flicker noise degradation after PBTI stress. A new methodology is proposed, for the first time, to correctly predict HC lifetime of HfSiON nMOS based on electron trapping.
Databáze: OpenAIRE