Method for fabricating a multi-layered dielectric layer including insulating layer having Si-CH3 bond therein

摘要

A multi-layered dielectric layer wherein the adhesion characteristic of an insulating layer including a Si-CH3 bond is improved, and a method of forming the same are provided. The multi-layered dielectric layer is formed on conductive patterns and includes a first insulating layer formed of a layer having a low dielectric constant including the Si-CH3 bond. In order to improve the adhesion characteristic of the first insulating layer, an adhesion surface is formed on the surface of the first insulating layer by treating the first insulating layer with plasma. In an alternative, the adhesion characteristics of the first insulating layer is improved by forming a buffer layer on the first insulating layer so that dipole-dipole interaction occurs between the first insulating layer and the buffer layer.