The ultraviolet sensor device comprises a semiconductor substrate, a dielectric layer above the substrate, a surface of the dielectric layer that is provided for the incidence of ultraviolet radiation, a floating gate electrode in the dielectric layer and an electrically conductive control gate electrode near the floating gate electrode. The control gate electrode is insulated from the floating gate electrode. A sensor layer is formed by an electrically conductive further layer that is electrically conductively connected to the floating gate electrode. The control gate electrode is arranged outside a region that is located between the sensor layer and the surface provided for the incidence of ultraviolet radiation. The sensor layer is discharged by incident UV radiation and can be charged or discharged electrically by charging or discharging the floating gate electrode.