Hello! There're very thin (4-15 nm) semiconductor films (passive film) formed on stainless steel by electrochemical method. In a electrochemical cell, I applied potential on stainless steel electrode to adjust Fermi level of the semiconductor passive film. I think that band bending take place in the semiconductor passive film (at the interface of passive film/electrolyte solution). However, one of my friend think there would be no band bending in the thin layer (4-15 nm level), due to the nano-scale. I think there's band bending take places. But I don't know his view point is right or not, please help me. Appreciate all answers!