Patent ID: 8253896

Claim:
A photonic sensor comprising: a first electrode layer formed on a substrate, the first electrode layer being configured to receive a first voltage; a second electrode layer configured to receive a second voltage different from the first voltage; a third electrode layer configured to receive a third voltage; a first photon absorption layer overlapping with the first electrode layer and electrically connecting thereto so as to receive the first voltage, the first photon absorption layer including first nanoparticles dispersed therein and being structured to transduce a first color light into corresponding electrical charge; a second photon absorption layer overlapping with the second electrode layer and electrically connecting thereto so as to receive the second voltage, the second photon absorption layer including second nanoparticles dispersed therein and being structured to transduce a second color light into corresponding electrical charge, wherein the second nanoparticles have an average size different from an average size of the first nanoparticles; a third photon absorption layer overlapping with the third electrode layer and electrically connecting thereto so as to receive the third voltage, the third photon absorption layer including third nanoparticles dispersed therein and being structured to transduce a third color light into corresponding electrical charge, wherein the third nanoparticles have an average size different from respective average sizes of the first and second nanoparticles; and a charge blocking layer formed between the first photon absorption layer and the second photon absorption layer, the blocking layer being configured to block a flow of free charge between the first photon absorption layer and the second photon absorption layer.