The SI unit of drift mobility is
m²/(V·s) (square meters per volt-second).
Drift mobility refers to the ability of charge carriers (like electrons or holes) to move through a material when an electric field is applied. It measures how easily charge carriers can drift in response to the electric field. The unit
m²/(V·s) reflects the distance a charge carrier moves per unit of time when subjected to a unit electric field.
In simpler terms, the higher the drift mobility, the faster the charge carriers move under the influence of an electric field.