A new method for extracting EOT for leaky insulators
A three-parameter model is developed and demonstrated for extracting the capacitance and parallel resistance for leaky capacitors. The technique combines dc and ac measurements to extract these values. The range over which the measurement is valid varies with the device, but is readily determined with a simple measurement. For devices with the highest dc leakage, minority carrier injection into the substrate can substantially increase the measured capacitance. This is not an artifact of the measurement procedure, but a real parasitic effect that increases the gate capacitance.
mos capacitors capacitance measurement leakage currents