A multi-spectral photodetector is provided, comprising: a plurality of N photodetectors where N is an integer such that N≥2, each photodetector comprising an anode and a cathode separated from one another by a region of interest, all produced in a semiconductor material; at least one electrical contact for all of the N anodes; and an electrical contact associated with each of the N cathodes; said photodetectors being stacked on top of one another such that the anodes and the cathodes and finally the regions of interest of two consecutive photodetectors in the stack are arranged face to face, this stack making it possible to define a face, termed the active face of the multi-spectral photodetector, common to all the photodetectors of the stack, defined by the face of the first region of interest of the first photodetector of the stack via which photons are intended to enter the stack.