Structure of the Interface and Adsorption

Instead of a bonding with OH , direct bonding with a few other ions has been reported, for instance with F at Ge and Si surfaces, at high F concentrations [3]. 

In addition ions may also be simply adsorbed at the surface due to electrostatic forces. This occurs preferentially on hydroxylated surfaces, for example 

Semiconductor Electrochemistry, Zweite Auflage. Rudiger Memming. 

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