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- W2085024863 abstract "The impact of the Zr/Hf ratio on the reliability of a HfZrOX gate dielectric has been investigated in detail. By a frequency-varied charge-pumping method, we found that the density of bulk traps is reduced with increasing Zr content. Also, a comparable Dit value observed by the rising/falling time-varied charge-pumping method suggests that Zr incorporation does not degrade the interface quality. Consequently, mobility increases with increasing Zr content in the HfZrOX dielectric and ∼25% mobility enhancement compared with that of HfO2 can be observed. However, the bulk trap density reduction reaches saturation at a higher Zr content. The improvement in positive-bias temperature instability (PBTI) was also demonstrated by both DC and pulse techniques. The smaller Vth shift in PBTI is attributed to the reduction of fast trapping and the generation of slow traps. Finally, a reduced gate-induced drain leakage current (GIDL) was also observed with increasing Zr content because of the reduction of trap-assisted tunneling in a high-k film." @default.
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- W2085024863 date "2008-04-25" @default.
- W2085024863 modified "2023-10-17" @default.
- W2085024863 title "Observation of Reliability of HfZrO<sub><i>X</i></sub>Gate Dielectric Devices with Different Zr/Hf Ratios" @default.
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- W2085024863 doi "https://doi.org/10.1143/jjap.47.2616" @default.
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