Abstract:
A semiconductor device is disclosed. The semiconductor device includes: a substrate; a first tensile dielectric layer on the substrate; a metal gate in the first tensile dielectric layer; a second tensile dielectric layer on the first tensile dielectric layer; and a contact plug in the first tensile dielectric layer and the second tensile dielectric layer. Preferably, the top surface of the contact plug is even with the top surface of the second tensile dielectric layer, and a carbon content of the second tensile dielectric layer is greater than the carbon content of the first tensile dielectric layer.
Abstract:
A stress memorization process including the following step is provided. A gate is formed on a substrate. A low-k dielectric layer with a dielectric constant lower than 3 is formed to entirely cover the gate and the substrate. A stress layer is formed to entirely cover the low-k dielectric layer. The stress layer and the low-k dielectric layer are removed. Moreover, a semiconductor structure including a contact etch stop layer is provided. A gate is disposed on a substrate. A porous layer entirely covers the gate and the substrate. A contact etch stop layer entirely covers the porous layer, wherein the thickness of the porous layer is thinner than the thickness of the contact etch stop layer.
Abstract:
A method for fabricating interlayer dielectric (ILD) layer is disclosed. The method includes the steps of first forming a first tensile dielectric layer on a substrate, and then forming a second tensile dielectric layer on the first tensile dielectric layer.
Abstract:
A method for fabricating interlayer dielectric (ILD) layer is disclosed. The method includes the steps of first forming a first tensile dielectric layer on a substrate, and then forming a second tensile dielectric layer on the first tensile dielectric layer.
Abstract:
A semiconductor device is disclosed. The semiconductor device includes: a substrate; a first tensile dielectric layer on the substrate; a metal gate in the first tensile dielectric layer; a second tensile dielectric layer on the first tensile dielectric layer; and a contact plug in the first tensile dielectric layer and the second tensile dielectric layer. Preferably, the top surface of the contact plug is even with the top surface of the second tensile dielectric layer, and a carbon content of the second tensile dielectric layer is greater than the carbon content of the first tensile dielectric layer.