Patent ID: 11923467
Assignee: AMS AG
Field: Optics (Instruments)
Classification: CPC H  G | IPC H

Claim 13:
14. A semiconductor device for infrared detection, comprising a stack of a first semiconductor layer, a second semiconductor layer and an optical coupling layer, wherein:
a backend layer is arranged on top of the stack,
the first semiconductor layer has a first type of conductivity,
the second semiconductor layer is arranged on a main surface of the first semiconductor layer and has a second type of conductivity,
the optical coupling layer is arranged on a main surface of the second semiconductor layer, wherein, at least in parts, the optical coupling layer is contiguous with a depletion region formed between the first and second semiconductor layers,
the optical coupling layer comprises an optical coupler and two lateral absorber regions, wherein the two lateral absorber regions flank the optical coupler,
the two lateral absorber regions are made of an absorber material with a characteristic bandgap Eg in the infrared, IR,
the optical coupler has two output sides, which are coupled to and facing the lateral absorber regions, respectively,
wherein light which is incident on the device traverses through the backend layer.