Potential and Charge Distribution at Solid-Electrolyte Interfaces

Potential and Charge Distribution at Solid Electrolyte Interfaces 

The potential and charge distribution within the space charge region below the semiconductor surface is quantitatively described by the Poisson equation  

The space charge Qsc which produces the electrical field Es is given by 

Since the corresponding equation is rather complex, we shall restrict ourselves to two limiting cases which can be applied in most investigations. They correspond to 

The thickness of the space charge layer can be derived using the relation d = eeo/C for a normal capacitor, and then one obtains from (10) 

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