For reasonable capacitance values, n should be within the range of 0.8< n ≤1, where the CPE becomes an ideal capacitor for n=1. The models allow good fitting of the EIS data over the entire potential range as shown in Figure of the Supporting Information. The highest frequency R-C element (RHF and CHF), which remained nearly constant over the entire potential range and is irrelevant to the semiconductor junctions, will be discussed later.