Patent ID: 9018727
Filing Date: 2015-04-28
Classification: H01L,Y02E,Y02P

Abstract:
1. A method for manufacturing an array of photodiodes comprising: a cathode comprising at least one indium phosphide substrate layer and an indium-gallium arsenide active layer, and a plurality of anodes at least partly formed in the indium-gallium arsenide active layer by diffusion of a P-type dopant, the cooperation between the anodes and the cathodes forming a photodiode, wherein the method comprises the following steps: a passivation layer of indium-phosphide of type N on the active layer is made before diffusion of the P-type dopant forming the anode, and first selective etching of the passivation layer is achieved in order to selectively suppress over the whole of its thickness an area of said passivation layer surrounding each anode.