Patent ID: 8558286

Claim:
A photodetector comprising: a plurality of optically sensitive layers including a first optically sensitive layer and a second optically sensitive layer, the first optically sensitive layer overlying at least a portion of a first side of an integrated circuit and the second optically sensitive layer overlying at least a portion of a second side of the first optically sensitive layer; a plurality of vertical electrodes positioned so the plurality of optically sensitive layers is interposed between a respective first electrode and a respective second electrode of the plurality of vertical electrodes, each respective first electrode being positioned laterally relative to at least a portion of the respective second electrode, the respective second electrode for the first optically sensitive layer and the second optically sensitive layer comprising a common electrode disposed around the first electrode; and a coupling between the integrated circuit and the plurality of vertical electrodes by which the integrated circuit selectively applies a bias and reads from the optically sensitive layers pixel information corresponding to light absorbed by the optically sensitive layers.