Ferroelectric supplies are well known for his or her capability to generate photovoltaic voltages with bigger than the band-gap, making them splendid candidates for photodetector purposes. Right here, we report a self-powered UV photodetector primarily based on Bi0.5Na0.5TiO3 (BNT) skinny movie ready by the sol-gel methodology. As in contrast with typical photodetectors primarily based on a single detection indicator, the demonstrated photodetector realizes UV mild depth detection over a large linear vary through the use of a present and voltage twin indicators detection methodology. When a UV mild depth is decrease than 1.8 mW/cm2, the voltage can be utilized to detect the sunshine sign. Conversely, the present could be utilized to detect the sign. This methodology not solely broadens the linear detection vary of UV mild depth, making it doable to detect the weak UV mild of 45.2 nW/cm2, but in addition makes the detector maintains a comparatively excessive sensitivity throughout the detectable vary. To analyze the distribution of spatial UV mild depth, a self-powered photodetector array system has been utilized to document the output voltage alerts as a map.