Patent ID: 6493848
Filing Date: 2002-12-10
Classification: G06F

Abstract:
A method for determining a current-voltage characteristic for a semiconductor device having a source region, a drain region and a channel region, the method comprising:assigning one of a plurality of fixed values to each of at least one of a plurality of barrier model variables including a gate-to-source voltage (VGS) to be applied to the device, a drain-to source voltage (VDS) to be applied to the device, a first Fermi level (F1) corresponding to the source region of the device, a second Fermi level (F2) corresponding to the channel region of the device, a width (W) of the channel region, an operating temperature (T) of the device, a quantization energy level (Eqv) of the device, a height (Vo) of a source-channel barrier of the device, and a mass in a z-direction for an electron in a valley (mzv); assigning a plurality of differing values for each of the remaining barrier model variables; and the barrier model being free of reliance on transport phenomena, including electron mobility, diffusion and velocity as variables; determining, for each of the plurality of differing values, a current value (I12) from a rate equation modeled after the source-channel barrier.