Patent ID: 9659989
Date: 2017-05-23
CPC Classifications: H01L

Claim:
1. An image sensor, comprising: a photodiode disposed in a semiconductor material; doped regions disposed in the semiconductor material and surrounding the photodiode at least in part, wherein the doped regions include a doped portion of the semiconductor material; and deep trench isolation (DTI) structures surrounding the photodiode at least in part, wherein the DTI structures are disposed within the doped regions and include: wherein a portion of the SiGe layer and the high-k dielectric extends laterally along a planar region of the semiconductor material from one of the side walls of a first DTI structure, included in the DTI structures, towards the photodiode, and wherein the portion of the SiGe layer and the high-k dielectric is optically aligned with the photodiode.