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MOS管饱和区迁移率

时间:10-02 整理:3721RD 点击:
MOS管在饱和区时,如果漏极电压VDS保持不变,栅极电压VGS变大,
此时,沟道中电子的迁移率如何变化

在Vgs不是很大时,迁移率不变
当Vgs越来越大,迁移率会变小

为什么呢 是由于晶格散射吗

为什么呢 是由于晶格散射吗

二级,多级效应

Mobility reduction due to vertical field

能解释一下吗 谢谢

can you explain it more clearly ? thanks

When Vgs-Vt is very hihg, carriers are attracted to interface states and other imperfections at the Si-SiO2 interface due to the high, vertical, electric filed between the gate and the channel. This causes a reduction in carrier mobility

so the reduction of mobility is the result of scattering, right?



yes

还有外国友人啊

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