| Citation: |
Wu Wei, Du Gang, Liu Xiaoyan, Sun Lei, Kang Jinfeng, Han Ruqi. A physical-based pMOSFETs threshold voltage model including the STI stress effect[J]. Journal of Semiconductors, 2011, 32(5): 054005. doi: 10.1088/1674-4926/32/5/054005
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Wu W, Du G, Liu X Y, Sun L, Kang J F, Han R Q. A physical-based pMOSFETs threshold voltage model including the STI stress effect[J]. J. Semicond., 2011, 32(5): 054005. doi: 10.1088/1674-4926/32/5/054005.
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A physical-based pMOSFETs threshold voltage model including the STI stress effect
DOI: 10.1088/1674-4926/32/5/054005
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Abstract
The physical threshold voltage model of pMOSFETs under shallow trench isolation (STI) stress has been developed. The model is verified by 130 nm technology layout dependent measurement data. The comparison between pMOSFET and nMOSFET model simulations due to STI stress was conducted to show that STI stress induced less threshold voltage shift and more mobility shift for the pMOSFET. The circuit simulations of a nine stage ring oscillator with and without STI stress proved about 11% improvement of average delay time. This indicates the importance of STI stress consideration in circuit design.-
Keywords:
- STI stress
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References
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Proportional views
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