Photosensitive detector, imaging sensor chip formed using the photosentive detector, and detection method

A photosensitive detector includes an array of detection units, each detection unit having a light-sensing transistor (1), a charge storage transistor (2) and a reading transistor (3), or comprising a light-sensing transistor, a charge transfer transistor (4), a charge storage transistor and a reading transistor. The light-sensing transistor is configured to realize the light-sensing function of the photosensitive detector; the charge storage transistor is configured to store photogenerated charges; the reading transistor is configured to read a signal; and, the charge transfer transistor is configured to control the transfer of the photogenerated charges. The photosensitive detector can realize global shutter and fast reading, and is compatible with the existing floating gate CMOS process, and the failure of any pixel will not affect the normal operation of the whole imaging array.