Patent ID: 8513704

Claim:
A method for manufacturing a photodiode capable of interacting with incident photons, comprising at least the steps of: producing a stack of three semiconductor layers comprising an intermediate layer placed between a first lower layer and a second upper layer, the three layers having a first conductivity type; and producing a semiconductor region that is in contact with at least said intermediate layer and said second upper layer and extends transversely relative to the planes of the three layers, said region having a second conductivity type opposite to the first conductivity type so as to form a P-N junction with said intermediate layer, wherein the intermediate layer is made of a semiconductor material having the second conductivity type; and wherein a thickness of said intermediate layer and the dopant concentrations of the first and second layers and of the intermediate layer are selected so as to obtain inversion of the conductivity type of said intermediate layer from the second conductivity type to the first conductivity type induced by the dopants of the first conductivity type that are present in the first and second layers.