A photo-detector having a common electrode comprising a conductive material configured in a non-solid pattern in which there are gaps where there is no conductive material. In one embodiment, the distance (d) or (d') between conductive portions of the common electrode is in a range from about 3 microns to about 5 microns. Alternatively, in one embodiment, the patterned common electrode covers between 20% to 70% of the surface of the respective photosensor element. A method for making the same is also provided.