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What is Charge Detrapping in HfO2 Dielectrics about?

The study investigates charge detrapping kinetics in high-k HfO2 gate dielectric stacks, revealing that trapped charge is unstable and decays over time through complex mechanisms. The detrapping rate is influenced by gate voltage, temperature, and light illumination, with evidence of multiple types of traps present. The findings highlight the importance of understanding charge behavior for improving the reliability of high-k materials in semiconductor devices.

Author

dongfei.pei

Language

EN