How to do Mott-Schottky plot?

Changing the pH modifies the apparent flatband potential by 570 mV corresponding to a 59 mV displacement per unit of pH. From the slope the donor density ND = 1.1 x 1021 cm−3 is determined. Then the same sample is measured after nanostructured TiO2 is deposited on top of FTO.

How is Mott-Schottky calculated?

Description of Mott-Schottky Measurements and Calculations. ε0 = 8.8541 × 10-12 Fm-1, and e = 1.602 × 10-19 C. Slope = -7.0 107 F-2V-1 and an NA value of 1.289 1017cm-3 was obtained at 30 × × kHz.

What causes Fermi level pinning?

Since Fermi level pinning results from surface states, changes in the surface brought about by deliberate surface chemistry may change the surface states and hence the photovoltage in solid-state and liquid-junction solar devices.

What is Schottky barrier height?

As mentioned previously in the case of GaAs, the Schottky barrier height for most metals is in the range of 0.7–0.9 eV (1.12–1.44×10−19 J) for n-type material.

When do you use a Mott Schottky plot?

In many theories, and in many experimental measurements, the plot is linear. The use of Mott–Schottky plots to determine system properties (such as flatband potential, doping density or Helmholtz capacitance) is termed Mott–Schottky analysis.

How is the Mott Schottky plot related to the depletion capacitance?

The depletion capacitance leading to Mott–Schottky plot is situated in the high frequency arc, as the depletion capacitance is a dielectric capacitance. On the other hand, the low frequency feature corresponds to the chemical capacitance of the surface states.

Is it possible to get Mott-Schottky plot using Metrohm autolab?

Finally, to observe the Mott-Schottky plot, go to “Potential scan FRA data” and go to its settings by clicking on “More”. Then turn on the “Mott-Schottky Rs-Cs”. That’s it. Good luck… Can you help by adding an answer? How to convert a potential collected with reference to Ag/AgCl to Reversible Hydrogen Electrode?