Abstract: A photodetector incorporates Fabry-Perot resonators that are coupled in order to concentrate radiation to be detected in a photoconductive material. It is then possible to use photoconductive nanocrystals that are deposited from a colloidal solution of the nanocrystals, while at the same time having a high photodetection sensitivity. It is thereby possible to form a matrix-array of such photodetectors on an image sensor readout circuit, while avoiding having to join a separate detection circuit to the readout circuit using intermediate solder balls. Additionally, each photodetector may be produced easily using deposition and selective removal processes, and may be able to be reconfigured so as to have variable detection sensitivity spectra.