WEEK 3 TASK 7 calculate the midgap voltage

As this p-type gate voltage becomes positive, majority carriers which is holes are forced away from the surface of the semiconductor. As a consequence of that, a depletion region was formed.

Under this condition, the work function of semiconductor Φs is equal to Fermi energy Φ_F

Where ni = 1 * 10^10 cm^-3 and Vt = 25 mV at a temperature of 300K.

So that 

Corresponding to the CV curve in task 1, the mid-gap Voltage can be demonstrated is 0.818 V.