An apparatus includes a plurality of interconnect structures over a substrate, a dielectric layer formed over a top metal line of the plurality of interconnect structures, a first barrier layer on a bottom and sidewalls of an opening in the dielectric layer, wherein the first barrier layer is formed of a first material and has a first thickness, a second barrier layer over the first barrier layer, wherein the second barrier layer is formed of a second material different from the first material and has a second thickness and a pad over the second barrier layer, wherein the pad is formed of a third material.

A method comprises forming a plurality of interconnect components over a gate structure, wherein a bottom metal line of the interconnect components is connected to the gate structure through a gate plug, depositing a dielectric layer over a top metal line of the interconnect components, forming an opening in the dielectric layer, depositing a first barrier layer on a bottom and sidewalls of the opening using a non-plasma based deposition process, depositing a second barrier layer over the first barrier layer using a plasma based deposition process and forming a pad in the opening.

A semiconductor device is provided in present invention, including a substrate, a first metal layer on the substrate, a first dielectric layer on the first metal layer, a dual damascene metal structure through the first metal layer and the first dielectric layer and partly in the substrate, an oxide-semiconductor layer between the dual damascene metal structure and the first metal layer, and a metal oxide layer on the oxide-semiconductor layer and between the dual damascene metal structure and the oxide-semiconductor layer, wherein the top surface of oxide-semiconductor layer is lower than the top surface of first dielectric layer, the metal oxide layer includes at least two metal elements and covers the top surface of oxide-semiconductor layer.

The present disclosure provides a semiconductor device and a method of manufacturing a semiconductor device. The semiconductor device comprises a substrate, an isolation layer, a first electronic device, a first interconnection structure, a first conductive structure, and a second conductive structure. The substrate has a first surface and a second surface opposite the first surface. The isolation layer contacts the second surface of the substrate and has a first surface facing away from the substrate. The first electronic device is embedded in the substrate. The first interconnection structure extends from the first surface of the substrate to the first surface of the isolation layer. The first conductive structure is disposed on the first surface of the substrate. The second conductive structure contacts the first surface of the isolation layer. The first conductive structure and the second conductive structure are electrically connected by the first interconnection structure.

The present disclosure provides a semiconductor device and a method of manufacturing a semiconductor device. The semiconductor device comprises a substrate, an isolation layer, a first electronic device, a first interconnection structure, a first conductive structure, and a second conductive structure. The substrate has a first surface and a second surface opposite the first surface. The isolation layer contacts the second surface of the substrate and has a first surface facing away from the substrate. The first electronic device is embedded in the substrate. The first interconnection structure extends from the first surface of the substrate to the first surface of the isolation layer. The first conductive structure is disposed on the first surface of the substrate. The second conductive structure contacts the first surface of the isolation layer. The first conductive structure and the second conductive structure are electrically connected by the first interconnection structure.