LATERAL PHOTOEFFECT OF ULTRATHIN METAL FILMS AND INDIUM TIN OXIDE FILMS DEPOSITED ON n-Si SUBSTRATE

Uliraihin metal films and indium tin oxide(ITO)films were prepared by vacuum evaporation on n-iype Si substrate.These structures exhibit interesting phoioelecironic properties,and lateral photovoltage was observed.The photovoltaic output can be a linear function of the position of light spot(localized illumination)with zero output for the light spot in the center;it reverses sign when the light spot scans from one side to the other side of the center position.The mechanism for this photovoltaic behavior is discussed.