摘要:
A manufacturing method of a semiconductor device comprises the following steps. First, a substrate is provided, at least one fin structure is formed on the substrate, and a metal layer is then deposited on the fin structure to form a salicide layer. After depositing the metal layer, the metal layer is removed but no RTP is performed before the metal layer is removed. Then a RTP is performed after the metal layer is removed.
摘要:
A semiconductor device includes a semiconductor substrate, a gate dielectric layer formed on the semiconductor substrate, and at least a first conductive-type metal gate formed on the gate dielectric layer. The first conductive-type metal gate includes a filling metal layer and a U-type metal layer formed between the filling metal layer and the gate dielectric layer. A topmost portion of the U-type metal layer is lower than the filling metal layer.
摘要:
A method of fabricating a metal gate structure is provided. Firstly, a high-K gate dielectric layer is formed on a semiconductor substrate. Then, a first metal-containing layer having a surface away from the gate dielectric layer is formed on the gate dielectric layer. After that, the surface of the first metal-containing layer is treated to improve the nitrogen content thereof of the surface. Subsequently, a silicon layer is formed on the first metal-containing layer. Because the silicon layer is formed on the surface having high nitrogen content, the catalyzing effect to the silicon layer resulted from the metal material in the first metal-containing layer can be prevented. As a result, the process yield is improved.
摘要:
A process of metal interconnects and a structure of metal interconnect produced therefrom are provided. An opening is formed in a dielectric layer. A metal layer is formed over the dielectric layer filling the opening. A film layer is formed on the metal layer and the dielectric layer. The film layer is reacted with the metal layer during a thermal process, and a protective layer is formed on the surface of the metal layer. The portion of the film layer not reacted with the metal layer is removed to avoid short between the metal layers. The protective layer can protect the surface of the metal layer from being oxidized and thus the stability and the reliability of the semiconductor device can be effectively promoted.
摘要:
A method for forming barrier layers comprises steps of forming a first metal barrier layer covering a first dielectric layer and contacting a conductive layer through a via of the first dielectric layer, forming a barrier layer of metalized materials on the first metal layer, optionally forming a second metal barrier layer on the barrier layer of metalized materials, removing portions of the barrier layer of metalized materials above the via bottom in the first dielectric layer, and leaving the barrier layer of metalized materials remaining on the via sidewall in the first dielectric layer; and forming a second metal layer covering the barrier layer of metalized materials. The accomplished barrier layers will have lower resistivity on the via bottom in the first dielectric layer and they are capable of preventing copper atoms from diffusing into the dielectric layer.
摘要:
A capacitor structure has a first electrode and a second electrode, which does not electrically connect to the first electrode. The first electrode has a plurality of first meshed conductive structures. The first meshed conductive structures have the same layout pattern, and are electrically connected to each other. The second electrode has a plurality of second meshed conductive structures. The second meshed conductive structures have the same layout pattern, and are electrically connected to each other. The first meshed conductive structures and the second meshed conductive structures are alternately stacked.
摘要:
A barrier layer structure includes a first dielectric layer forming on a conductive layer and having a via being formed in the first dielectric layer, wherein the via in the first dielectric layer is connected to the conductive layer. A first metal layer is steppedly covered on the first dielectric layer. A layer of metallized materials is steppedly covered on the first metal layer, but the layer of metallized materials does not cover the first metal layer above the via bottom connected to the conductive layer in the dielectric layer. A second metal layer is steppedly covered on the layer of metallized materials, and the second metal layer is covered the first metal layer above the via bottom connected to the conductive layer in the dielectric layer. The barrier layer structure will have lower resistivity in the bottom via of the first dielectric layer and it is capable of preventing copper atoms from diffusing into the dielectric layer.
摘要:
A process of metal interconnects and a structure of metal interconnect produced therefrom are provided. An opening is formed in a dielectric layer. A metal layer is formed over the dielectric layer filling the opening. A film layer is formed on the metal layer and the dielectric layer. The film layer is reacted with the metal layer during a thermal process, and a protective layer is formed on the surface of the metal layer. The portion of the film layer not reacted with the metal layer is removed to avoid short between the metal layers. The protective layer can protect the surface of the metal layer from being oxidized and thus the stability and the reliability of the semiconductor device can be effectively promoted.
摘要:
A method of fabricating a metal plug. On a semiconductor substrate comprising a MOS device, a dielectric layer, and a via hole penetrating though the dielectric layer, a conformal titanium layer is formed on the dielectric layer and the via hole. A low temperature annealing is formed in a nitrogen environment, so that a surface of the titanium layer is transformed into a first thin titanium nitride layer. A conformal second titanium nitride layer is formed on the first thin titanium nitride layer by using collimator sputtering. A metal layer is formed and etched back on the second titanium nitride layer to form a metal plug.
摘要:
A method for forming a barrier layer inside a contact in a semiconductor wafer is disclosed herein. The forgoing semiconductor wafer includes a dielectric layer on a silicon contained layer. A portion of the silicon contained layer is exposed by the contact. The method mentioned above includes the following steps.First, form a conductive layer on the topography of the semiconductor wafer by a method other than CVD to increase the ohmic contact to the exposed silicon contained layer. Thus a first portion of the conductive layer is formed on the dielectric layer, and a second portion of the conductive layer is formed on the exposed silicon contained layer. Next, remove the first portion of the conductive layer to expose the dielectric layer. Finally, use a chemical vapor deposition (CVD) method to form the barrier layer on the dielectric layer and the first portion of the conductive layer to prevent said silicon contained layer from exposure.