S. Villa et al., PHYSICALLY-BASED MODEL OF THE EFFECTIVE MOBILITY IN HEAVILY-DOPED N-MOSFETS, I.E.E.E. transactions on electron devices, 45(1), 1998, pp. 110-115
We present a new analytical mobility model for channel electrons in he
avily-doped MOSFET's biased from weak to strong inversion suitable for
implementation in device simulation codes. The model accounts for the
two-dimensionality of the electron gas and for the effect of charge t
rapping on the measurements and has been validated by comparing the th
eoretical curves with an extensive set of mobility measurements perfor
med on devices with channel doping ranging from 3.8 x 10(17) to 1.25 x
10(18) cm(-3) over a wide bias and temperature range (141-400 K).