摘要:
A method is provided for fabricating a semiconductor device. A semiconductor substrate is provided. A first high-k dielectric layer is formed on the semiconductor substrate. A first treatment is performed on the high-k dielectric layer. In an embodiment, the treatment includes a UV radiation in the presence of O2 and/or O3. A second high-k dielectric layer is formed on the treated first high-k dielectric layer. A second treatment is performed on the second high-k dielectric layer. In an embodiment, the high-k dielectric layer forms a gate dielectric layer of a field effect transistor.
摘要:
A semiconductor device includes a substrate having a first active region, a first gate structure over the first active region, wherein the first gate structure includes a first interfacial layer having a convex top surface, a first high-k dielectric over the first interfacial layer, and a first gate electrode over the first high-k dielectric.
摘要:
A method for fabricating the gate dielectric layer comprises forming a high-k dielectric layer over a substrate; forming an oxygen-containing layer on the high-k dielectric layer by an atomic layer deposition process; and performing an inert plasma treatment on the oxygen-containing layer.
摘要:
The present disclosure provides a method that includes providing a semiconductor substrate; forming a gate structure over the semiconductor substrate, first gate structure including a dummy dielectric and a dummy gate disposed over the dummy dielectric; removing the dummy gate and the dummy dielectric from the gate structure thereby forming a trench; forming a high-k dielectric layer partially filling the trench; forming a barrier layer over the high-k dielectric layer partially filling the trench; forming an capping layer over the barrier layer partially filling the trench; performing an annealing process; removing the capping layer; forming a metal layer over the barrier layer filling in a remainder of the trench; and performing a chemical mechanical polishing (CMP) to remove the various layers outside the trench.
摘要:
The present disclosure provides a method that includes providing a semiconductor substrate; forming a gate structure over the semiconductor substrate, first gate structure including a dummy dielectric and a dummy gate disposed over the dummy dielectric; removing the dummy gate and the dummy dielectric from the gate structure thereby forming a trench; forming a high-k dielectric layer partially filling the trench; forming a barrier layer over the high-k dielectric layer partially filling the trench; forming an capping layer over the barrier layer partially filling the trench; performing an annealing process; removing the capping layer; forming a metal layer over the barrier layer filling in a remainder of the trench; and performing a chemical mechanical polishing (CMP) to remove the various layers outside the trench.
摘要:
A method for fabricating an integrated circuit device is disclosed. An exemplary method can include providing a substrate having a first region, a second region, and a third region; and forming a first gate structure in the first region, a second gate structure in the second region, and a third gate structure in the third region, wherein the first, second, and third gate structures include a gate dielectric layer, the gate dielectric layer being a first thickness in the first gate structure, a second thickness in the second gate structure, and a third thickness in the third gate structure. Forming the gate dielectric layer of the first, second, and third thicknesses can include forming an etching barrier layer over the gate dielectric layer in at least one of the first, second, or third regions while forming the first, second, and third gate structures, and/or prior to forming the gate dielectric layer in at least one of the first, second, or third regions, performing an implantation process on the at least one region.
摘要:
A method for fabricating an integrated circuit device is disclosed which includes providing a substrate having first, second, and third regions; and forming first, second, and third gate structures in the first, second, and third regions, respectively. The first, second, and third gate structures include a gate dielectric layer, the gate dielectric layer being a first thickness in the first gate structure, a second thickness in the second gate structure, and a third thickness in the third gate structure. Forming the gate dielectric layer of the first, second, and third thicknesses can include forming an etching barrier layer over the gate dielectric layer in at least one of the first, second, or third regions while forming the first, second, and third gate structures, and/or prior to forming the gate dielectric layer in at least one of the first, second, or third regions, performing an implantation process on the at least one region.
摘要:
A method for fabricating an integrated circuit device is disclosed. An exemplary method can include providing a substrate having a first region, a second region, and a third region; and forming a first gate structure in the first region, a second gate structure in the second region, and a third gate structure in the third region, wherein the first, second, and third gate structures include a gate dielectric layer, the gate dielectric layer being a first thickness in the first gate structure, a second thickness in the second gate structure, and a third thickness in the third gate structure. Forming the gate dielectric layer of the first, second, and third thicknesses can include forming an etching barrier layer over the gate dielectric layer in at least one of the first, second, or third regions while forming the first, second, and third gate structures, and/or prior to forming the gate dielectric layer in at least one of the first, second, or third regions, performing an implantation process on the at least one region.
摘要:
A method for fabricating an integrated circuit device is disclosed which includes providing a substrate having first, second, and third regions; and forming first, second, and third gate structures in the first, second, and third regions, respectively. The first, second, and third gate structures include a gate dielectric layer, the gate dielectric layer being a first thickness in the first gate structure, a second thickness in the second gate structure, and a third thickness in the third gate structure. Forming the gate dielectric layer of the first, second, and third thicknesses can include forming an etching barrier layer over the gate dielectric layer in at least one of the first, second, or third regions while forming the first, second, and third gate structures, and/or prior to forming the gate dielectric layer in at least one of the first, second, or third regions, performing an implantation process on the at least one region.
摘要:
Buffer layer and method of forming the buffer layer, the method including forming a high-k dielectric layer, forming a titanium nitride layer over the high-k dielectric layer, forming a silicon layer on the titanium nitride layer, annealing the silicon layer into the titanium nitride layer to form an annealed silicon layer and forming an n-metal over the high-k dielectric layer.