Citation: |
He Jin, Ma Chenyue, Zhang Lining, Zhang Jian, Zhang Xing. A semi-empirical analytic model for threshold voltage instability in MOSFETs with high-k gate stacks[J]. Journal of Semiconductors, 2009, 30(8): 084003. doi: 10.1088/1674-4926/30/8/084003
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He J, Ma C Y, Zhang L N, Zhang J, Zhang X. A semi-empirical analytic model for threshold voltage instability in MOSFETs with high-k gate stacks[J]. J. Semicond., 2009, 30(8): 084003. doi: 10.1088/1674-4926/30/8/084003.
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A semi-empirical analytic model for threshold voltage instability in MOSFETs with high-k gate stacks
DOI: 10.1088/1674-4926/30/8/084003
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Abstract
A semi-empirical analytic model for the threshold voltage instability of a MOSFET is derived from Shockley–Read–Hall (SRH) statistics to account for the transient charging effects in a MOSFET high-k gate stack. Starting from the single energy level and single trap assumption, an analytical expression for the filled trap densityin terms of dynamic time is derived from SRH statistics. The semi-empirical analytic model for the threshold voltage instability is developed based on MOSFET device physics between the threshold voltage and the induced trapdensity. The obtained model is also verified by extensive experimental data of trapping and de-trapping stress from different high-k gate configurations.-
Keywords:
- high-k gate stack
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References
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