FIELD CONTROL TYPE OPTICAL SEMICONDUCTOR DEVICE

摘要

PURPOSE:To obtain photoconductivity corresponding to the intensity of light by letting an optical filter into a region between two electrodes on an intrinsic semiconductor substrate through a transparent electrode and insulation film. CONSTITUTION:An intrinsic semiconductor substrate 1 is provided and electrodes 3 and 4 are formed by ohmic formation on its main surface 2. A transparent electrode 12 is formed on a region 5 between the electrodes 3 and 4 on the substrate 1 via a transparent insulation layer 11 which is formed on the side of the main surface 2. The light 6 is let incident into the side of the main surface 2 of the region 5 on the substrate 1 through the insulation layer 11 and the electrode 12. With this constitution, the photoconductivity corresponding to the intensity of the light can be obtained and the corresponding photoelectric current can be supplied to a load.