Equivalent circuit model (a) a simple three-element model and (b) the proposed model.
Experimental multifrequency plots with upturns in accumulation.
The characteristic of the sample in Fig. 2 and the corresponding dc resistance from calculation.
Estimated capacitance in accumulation of the sample in Fig. 1 from Eq. (3) for different frequencies.
Multifrequency plots of experimental data (a) and after frequency correction (b). The values of extracted , , and are , , and , respectively.
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