期刊
IEEE TRANSACTIONS ON DEVICE AND MATERIALS RELIABILITY
卷 9, 期 2, 页码 147-162出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TDMR.2009.2016954
关键词
Bias temperature instability; dielectric breakdown; HfO2; high-k; metal gate; MOSFETs; reliability; stress induced leakage current (SILC); TiN
资金
- Research Alliance Teams at various IBM Research and Development facilities
It has been demonstrated that the introduction of HfO2/TiN gate stacks into CMOS technologies provides the means to continue with traditional device gate length scaling. However, the introduction of HfO2 as a new gate dielectric and TiN as a metallic gate electrode into the gate stack of FETs brings about new challenges for understanding reliability physics and qualification. This contribution summarizes recent advances in the understanding of charge trapping and defect generation in HfO2/TiN gate stacks. This paper relates the electrical properties to the chemical/physical properties of the high-e dielectric and discusses test procedures specifically tailored to quantify gate stack reliability of HfO2/TiN gate stacks.
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