The C-V curve of MOS capacitor is shown below. What is thickness of oxide layer? What is the type of substrate doping ? What is the maximum depletion layer width? What is the doping concentration in the substrate? What is the flat band voltage for the capacitor? If the oxide has a fixed charge Qf/q = 2×1010 /cm2, is the contact of the capacitor made of n+ or p+ polysilicon?