Learning Forum

[Amrita Pati]

Hi Logeshwaran,

My understanding is that when the electric field increases, the drift-velocity of the carriers is commonly observed to saturate, reducing the mobility accordingly. To account for this effect, CHARGE includes high-field mobility models that describe the monotonic (silicon-like) or overshoot (GaAs-like) velocity saturation behaviour. So, the saturation velocity can be set as a parameter by the user:

I am not sure if the saturation velocity is something that can be modeled. I have reached out to my colleague to confirm this. I will get back to you.

Regards,
Amrita