Patent ID: 6225643
Filing Date: 2001-05-01
Classification: H01L

Abstract:
A silicon-on-insulator cell, comprising:a semiconductor body;a first insulator layer and a second insulator layer disposed in said semiconductor body, made from a material selected from the group consisting of silicon dioxide and silicon nitride and having a layer thickness of approximately 40 nm;a polycrystalline zone doped with a dopant of a first conductivity type grown on at least one of said first insulator layer and said second insulator layer;a semiconductor region adjoining said polycrystalline zone and located outside a region of said first insulator layer and said second insulator layer, said semiconductor region doped with said dopant of said first conductivity type by diffusion from said polycrystalline zone; anda dopant source having a dopant of a second conductivity type, opposite said first conductivity type, said dopant source being introduced into said semiconductor body by ion implantation and being disposed in said semiconductor body above said second insulator layer.