Patent ID: 8018015

Claim:
A pixel cell comprising: a photo-conversion device at a surface of a substrate; a plurality of transistors, each comprising a gate and a source/drain region; a first dielectric material in contact with a surface of the photo-conversion device and the source/drain regions, the first dielectric material comprising tetraethyl orthosilicate, wherein a portion of the first dielectric material over the photo-conversion device is thicker than a portion of the first dielectric material over and in contact with the source/drain regions; the first dielectric material having an opening over a portion of one of the source/drain regions; at least one conductor through the opening and in direct contact with at least one of the source/drain regions underneath the opening, wherein the at least one conductor comprises a polysilicon comprising material; a conductive material over and in contact with the polysilicon comprising material, the conductive material comprising at least one of a silicide and a refractory metal; a second dielectric material in contact with the first dielectric material, the second dielectric material comprising at least one of borophosphosilicate glass, silicon dioxide, borosilicate glass, or phosphosilicate glass; and a third dielectric material in contact with the second dielectric material, the third dielectric material comprising at least one of borophosphosilicate glass, silicon dioxide, borosilicate glass, or phosphosilicate glass.