Patent ID: 8093089
Filing Date: 2012-01-10
Classification: H01L

Abstract:
1. A method of manufacturing an image sensor, comprising: forming a gate electrode on a semiconductor substrate; forming a source/drain region in the semiconductor substrate adjacent to the gate electrode; forming a photodiode in the semiconductor substrate adjacent to the gate electrode; and forming a gettering region in the semiconductor substrate at a distance of about 1 Å to about 3,000 Å from the source/drain region such that the gettering region surrounds lower and lateral regions of the source/drain region, wherein the forming of the gettering region includes implanting carbon atoms into the semiconductor substrate along a direction at least one of perpendicular and inclined to the semiconductor substrate using an ion implantation process, and wherein the forming of the gettering region includes forming a lower surface of the gettering region closer to an upper surface of the semiconductor substrate than a lower surface of the photodiode.