MOS管饱和区迁移率
时间:10-02
整理:3721RD
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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
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
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