Abstract: A method includes forming a transistor, which includes forming a dummy gate stack over a semiconductor region, and forming an Inter-Layer Dielectric (ILD). The dummy gate stack is in the ILD, and the ILD covers a source/drain region in the semiconductor region. The method further includes removing the dummy gate stack to form a trench in the first ILD, forming a low-k gate spacer in the trench, forming a replacement gate dielectric extending into the trench, forming a metal layer to fill the trench, and performing a planarization to remove excess portions of the replacement gate dielectric and the metal layer to form a gate dielectric and a metal gate, respectively. A source region and a drain region are then formed on opposite sides of the metal gate.

Abstract: A method includes forming a transistor, which includes forming a dummy gate stack over a semiconductor region, and forming an Inter-Layer Dielectric (ILD). The dummy gate stack is in the ILD, and the ILD covers a source/drain region in the semiconductor region. The method further includes removing the dummy gate stack to form a trench in the first ILD, forming a low-k gate spacer in the trench, forming a replacement gate dielectric extending into the trench, forming a metal layer to fill the trench, and performing a planarization to remove excess portions of the replacement gate dielectric and the metal layer to form a gate dielectric and a metal gate, respectively. A source region and a drain region are then formed on opposite sides of the metal gate.

Abstract: A method includes forming a transistor, which includes forming a dummy gate stack over a semiconductor region, and forming an Inter-Layer Dielectric (ILD). The dummy gate stack is in the ILD, and the ILD covers a source/drain region in the semiconductor region. The method further includes removing the dummy gate stack to form a trench in the first ILD, forming a low-k gate spacer in the trench, forming a replacement gate dielectric extending into the trench, forming a metal layer to fill the trench, and performing a planarization to remove excess portions of the replacement gate dielectric and the metal layer to form a gate dielectric and a metal gate, respectively. A source region and a drain region are then formed on opposite sides of the metal gate.

Abstract: A method includes forming a transistor, which includes forming a dummy gate stack over a semiconductor region, and forming an Inter-Layer Dielectric (ILD). The dummy gate stack is in the ILD, and the ILD covers a source/drain region in the semiconductor region. The method further includes removing the dummy gate stack to form a trench in the first ILD, forming a low-k gate spacer in the trench, forming a replacement gate dielectric extending into the trench, forming a metal layer to fill the trench, and performing a planarization to remove excess portions of the replacement gate dielectric and the metal layer to form a gate dielectric and a metal gate, respectively. A source region and a drain region are then formed on opposite sides of the metal gate.

Abstract: Embodiments of a semiconductor device structure and a method for forming the same are provided. The semiconductor device structure includes a substrate and a first metal gate structure formed over the substrate. The first metal gate structure has a first width. The semiconductor device structure further includes a first contact formed adjacent to the first metal gate structure and a second metal gate structure formed over the substrate. The second metal gate structure has a second width smaller than the first width. The semiconductor device structure further includes an insulating layer formed over the second metal gate structure and a second contact self-aligned to the second metal gate structure.

Abstract: Embodiments of a semiconductor device structure and a method for forming the same are provided. The semiconductor device structure includes a substrate and a first metal gate structure formed over the substrate. The first metal gate structure has a first width. The semiconductor device structure further includes a first contact formed adjacent to the first metal gate structure and a second metal gate structure formed over the substrate. The second metal gate structure has a second width smaller than the first width. The semiconductor device structure further includes an insulating layer formed over the second metal gate structure and a second contact self-aligned to the second metal gate structure.

Abstract: Embodiments of a semiconductor device structure and a method for forming the same are provided. The semiconductor device structure includes a substrate and a first metal gate structure formed over the substrate. The first metal gate structure has a first width. The semiconductor device structure further includes a first contact formed adjacent to the first metal gate structure and a second metal gate structure formed over the substrate. The second metal gate structure has a second width smaller than the first width. The semiconductor device structure further includes an insulating layer formed over the second metal gate structure and a second contact self-aligned to the second metal gate structure.

Abstract: A method includes forming a transistor, which includes forming a dummy gate stack over a semiconductor region, and forming an Inter-Layer Dielectric (ILD). The dummy gate stack is in the ILD, and the ILD covers a source/drain region in the semiconductor region. The method further includes removing the dummy gate stack to form a trench in the first ILD, forming a low-k gate spacer in the trench, forming a replacement gate dielectric extending into the trench, forming a metal layer to fill the trench, and performing a planarization to remove excess portions of the replacement gate dielectric and the metal layer to form a gate dielectric and a metal gate, respectively. A source region and a drain region are then formed on opposite sides of the metal gate.

Abstract: A semiconductor device and method for fabricating such a device are presented. The semiconductor device includes a first gate electrode of a transistor, a first sidewall spacer along a sidewall of the gate pattern, a first insulating layer in contact with the first sidewall spacer and having a planarized top surface, and a second sidewall spacer formed on the planarized top surface of the first insulating layer. The second sidewall spacer may be formed over the first sidewall spacer. A width of the second sidewall spacer is equal to or greater than a width of the first sidewall spacer.

Abstract: A method includes forming a transistor, which includes forming a dummy gate stack over a semiconductor region, and forming an Inter-Layer Dielectric (ILD). The dummy gate stack is in the ILD, and the ILD covers a source/drain region in the semiconductor region. The method further includes removing the dummy gate stack to form a trench in the first ILD, forming a low-k gate spacer in the trench, forming a replacement gate dielectric extending into the trench, forming a metal layer to fill the trench, and performing a planarization to remove excess portions of the replacement gate dielectric and the metal layer to form a gate dielectric and a metal gate, respectively. A source region and a drain region are then formed on opposite sides of the metal gate.

Abstract: A method includes forming a transistor, which includes forming a dummy gate stack over a semiconductor region, and forming an Inter-Layer Dielectric (ILD). The dummy gate stack is in the ILD, and the ILD covers a source/drain region in the semiconductor region. The method further includes removing the dummy gate stack to form a trench in the first ILD, forming a low-k gate spacer in the trench, forming a replacement gate dielectric extending into the trench, forming a metal layer to fill the trench, and performing a planarization to remove excess portions of the replacement gate dielectric and the metal layer to form a gate dielectric and a metal gate, respectively. A source region and a drain region are then formed on opposite sides of the metal gate.

Abstract: Embodiments of a semiconductor device structure and a method for forming the same are provided. The semiconductor device structure includes a substrate and a first metal gate structure formed over the substrate. The first metal gate structure has a first width. The semiconductor device structure further includes a first contact formed adjacent to the first metal gate structure and a second metal gate structure formed over the substrate. The second metal gate structure has a second width smaller than the first width. The semiconductor device structure further includes an insulating layer formed over the second metal gate structure and a second contact self-aligned to the second metal gate structure.

Abstract: A semiconductor device and method for fabricating such a device are presented. The semiconductor device includes a first gate electrode of a transistor, a first sidewall spacer along a sidewall of the gate pattern, a first insulating layer in contact with the first sidewall spacer and having a planarized top surface, and a second sidewall spacer formed on the planarized top surface of the first insulating layer. The second sidewall spacer may be formed over the first sidewall spacer. A width of the second sidewall spacer is equal to or greater than a width of the first sidewall spacer.

Abstract: Embodiments of a semiconductor device structure and a method for forming the same are provided. The semiconductor device structure includes a substrate and a first metal gate structure formed over the substrate. The first metal gate structure has a first width. The semiconductor device structure further includes a first contact formed adjacent to the first metal gate structure and a second metal gate structure formed over the substrate. The second metal gate structure has a second width smaller than the first width. The semiconductor device structure further includes an insulating layer formed over the second metal gate structure and a second contact self-aligned to the second metal gate structure.

Abstract: A semiconductor device and method for fabricating such a device are presented. The semiconductor device includes a first gate electrode of a transistor, a first sidewall spacer along a sidewall of the gate pattern, a first insulating layer in contact with the first sidewall spacer and having a planarized top surface, and a second sidewall spacer formed on the planarized top surface of the first insulating layer. The second sidewall spacer may be formed over the first sidewall spacer. A width of the second sidewall spacer is equal to or greater than a width of the first sidewall spacer.

Abstract: A semiconductor device and method for fabricating such a device are presented. The semiconductor device includes a first gate electrode of a transistor, a first sidewall spacer along a sidewall of the gate pattern, a first insulating layer in contact with the first sidewall spacer and having a planarized top surface, and a second sidewall spacer formed on the planarized top surface of the first insulating layer. The second sidewall spacer may be formed over the first sidewall spacer. A width of the second sidewall spacer is equal to or greater than a width of the first sidewall spacer.

Abstract: A semiconductor device having five gate stacks on different regions of a substrate and methods of making the same are described. The device includes a semiconductor substrate and isolation features to separate the different regions on the substrate. The different regions include a p-type field-effect transistor (pFET) core region, an input/output pFET (pFET IO) region, an n-type field-effect transistor (nFET) core region, an input/output nFET (nFET IO) region, and a high-resistor region.

Abstract: Embodiments of a semiconductor device structure and a method for forming the same are provided. The semiconductor device structure includes a substrate and a first metal gate structure formed over the substrate. The first metal gate structure has a first width. The semiconductor device structure further includes a first contact formed adjacent to the first metal gate structure and a second metal gate structure formed over the substrate. The second metal gate structure has a second width smaller than the first width. The semiconductor device structure further includes an insulating layer formed over the second metal gate structure and a second contact self-aligned to the second metal gate structure.

Abstract: Embodiments of a semiconductor device structure and a method for forming the same are provided. The semiconductor device structure includes a substrate and a first metal gate structure formed over the substrate. The first metal gate structure has a first width. The semiconductor device structure further includes a first contact formed adjacent to the first metal gate structure and a second metal gate structure formed over the substrate. The second metal gate structure has a second width smaller than the first width. The semiconductor device structure further includes an insulating layer formed over the second metal gate structure and a second contact self-aligned to the second metal gate structure.

Abstract: The present disclosure provides a method of fabricating a semiconductor device. The method includes forming a first gate structure and a second gate structure over a substrate. The first and second gate structures each include a high-k dielectric layer located over the substrate, a capping layer located over the high-k dielectric layer, an N-type work function metal layer located over the capping layer, and a polysilicon layer located over the N-type work function metal layer. The method includes forming an inter-layer dielectric (ILD) layer over the substrate, the first gate structure, and the second gate structure. The method includes polishing the ILD layer until a surface of the ILD layer is substantially co-planar with surfaces of the first gate structure and the second gate structure. The method includes replacing portions of the second gate structure with a metal gate. A silicidation process is then performed to the semiconductor device.