Patent ID: 9450013
Filing Date: 2016-09-20
CPC Classification: H01L

Claim Text:
1. A planar photodiode array comprising a useful layer made of a cadmium, mercury and tellurium semi-conductor alloy of Cd x Hg 1-x Te type, the useful layer having a lower face and an upper face on the side opposite to the lower face; wherein: the useful layer comprises at least two superimposed doped layers, each interface between two adjacent doped layers forming a PN junction which extends over the whole extent of the useful layer; the useful layer has at least one region designated separation region, extending from the upper face of the useful layer towards the lower face while going through said PN junction, the separation region separating at least two volumes, designated useful volumes which extend into the useful layer as deeply as the separation region; and the average cadmium concentration in the separation region is greater than the average cadmium concentration in a remainder of the useful layer.