1. A device comprising: an array of conductive regions forming a first portion of a monolithic integrated circuit, the array of conductive regions comprising pixel regions; an optically sensitive material formed over at least a portion of the monolithic integrated circuit and in electrical communication with at least one conductive region of the array of conductive regions; and a readout circuit formed on the monolithic integrated circuit, the readout circuit to activate at least one pixel in the array of pixel regions by applying an electrical signal to a control lead in electrical communication with the at least one pixel so that current flows through the optically sensitive layer and the at least one pixel.