A method for operating a photosensitive device is provided. At first, the
photosensitive device is provided, which comprising a photo sensor
circuit and a photo sensor, where the photo sensor is located above and
electrically coupled with the photo sensor circuit, and where the photo
sensor comprises a bottom electrode; a photosensitive layer located on
the bottom electrode; and a transparent electrode located on the
photosensitive layer. Then, a first electrical potential is supplied to
the transparent electrode, and a second electrical potential is supplied
to the bottom electrode, where the first electrical potential is greater
than the second electrical potential.