Tutorial: The Power Law Model for Interpretation of CPE Parameters

Jorcin et al. 1 have suggested that Constant -Phase Element (CPE) behavior can be attributed to surface and/or normal distributions of time constants. This powerful insight has facilitated categorization of different models for extracting meaningful physical properties from CPE parameters. While the model proposed by Brug et al. 2 seems best suited for surface distributions , the power-law model has recently emerged as a powerful tool for interpretation of constant phase element (CPE) parameters in terms of the properties of dielectric films.