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Adsorption of Oxygen SnOx Thin Film

The change in electrical resistance and the surface potential of SnOx thin film by the adsorption of oxygen were observed. At an oxygen pressure of 6.7×10-4 Pa, both changes result in a decrease. At further adsorption, the change in the electrical resistance ascends abruptly at about 10-2 Pa. These changes can be explained by devising a model of band bending.