Flat-roof phenomenon of dynamic equilibrium phase in the negative bias temperature instability effect on a power MOSFET
Zhang Yue (张月)a b, Zhuo Qing-Qing (卓青青)a b, Liu Hong-Xia (刘红侠)a b, Ma Xiao-Hua (马晓华)b c, Hao Yue (郝跃)b
a School of Microelectronics, Xidian University, Xi'an 710071, China; b State Key Discipline Laboratory of Wide Bandgap Semiconductor Technologies, Key Laboratory of Wide Bandgap Semiconductor Materials and Devices of Ministry of Education, Xi'an 710071, China; c School of Technical Physics, Xidian University, Xi'an 710071, China
Abstract The effect of the static negative bias temperature (NBT) stress on a p-channel power metal-oxide-semiconductor field-effect transistor (MOSFET) is investigated by experiment and simulation. The time evolution of the negative bias temperature instability (NBTI) degradation has the trend predicted by the reaction-diffusion (R-D) model but with an exaggerated time scale. The phenomena of the flat-roof section are observed under various stress conditions, which can be considered as the dynamic equilibrium phase in the R-D process. Based on the simulated results, the variation of the flat-roof section with the stress condition can be explained.
(Semiconductor-device characterization, design, and modeling)
Fund: Project supported by the National Basic Research Program of China (Grant No. 2011CBA00606) and the National Natural Science Foundation of China (Grant No. 61106106).
Zhang Yue (张月), Zhuo Qing-Qing (卓青青), Liu Hong-Xia (刘红侠), Ma Xiao-Hua (马晓华), Hao Yue (郝跃) Flat-roof phenomenon of dynamic equilibrium phase in the negative bias temperature instability effect on a power MOSFET 2014 Chin. Phys. B 23 057304
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Recovery of PMOSFET NBTI under different conditions Cao Yan-Rong (曹艳荣), Yang Yi (杨毅), Cao Cheng (曹成), He Wen-Long (何文龙), Zheng Xue-Feng (郑雪峰), Ma Xiao-Hua (马晓华), Hao Yue (郝跃). Chin. Phys. B, 2015, 24(9): 097304.
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