A device, as in an integrated circuit, includes diverse components such as
transistors and capacitors. After conductive layers for all types of
components are produced, a silicide layer is provided over conductive
layers, reducing resistance. The device can be an imager in which pixels
in an array includes a capacitor and readout circuitry with NMOS
transistors. Periphery circuitry around the array can include PMOS
transistors. Because the silicide layer is formed after the conductive
layers, it is not exposed to high temperatures and, therefore, migration
and cross-contamination of dopants is reduced.