Patent ID: 6410970
Filing Date: 2002-06-25
Classification: H01L

Abstract:
A semiconductor device, comprising:a substrate; an n-doped region within said substrate; a p-doped region within said substrate; a channel within said substrate between said n-doped and p-doped regions, wherein a depletion region exists within said channel when a reverse bias voltage is applied across said n-doped and p-doped regions; and a photosensitive region doped with p-type dopant, said photosensitive region situated within said channel and partially including said depletion region when said reverse bias voltage is applied across said n-doped and p-doped regions, wherein hole-electron pairs are generated from said partial depletion region within said photosensitive region in response to an incident light upon said photosensitive region, wherein said substrate is doped with p-type dopant, and the concentration of the p-type dopant in the photosensitive region is greater than the concentration of the p-type dopant of the substrate.