Abstract:
A fin-shaped structure forming process includes the following step. A first mandrel and a second mandrel are formed on a substrate. A first spacer material is formed to entirely cover the first mandrel, the second mandrel and the substrate. The exposed first spacer material is etched to form a first spacer on the substrate beside the first mandrel. A second spacer material is formed to entirely cover the first mandrel, the second mandrel and the substrate. The second spacer material and the first spacer material are etched to form a second spacer on the substrate beside the second mandrel and a third spacer including the first spacer on the substrate beside the first mandrel. The layout of the second spacer and the third spacer is transferred to the substrate, so a second fin-shaped structure and a first fin-shaped structure having different widths are formed respectively.
Abstract:
A shallow trench isolation (STI) and method of forming the same is provided. The STI structure includes an upper insulating portion and a lower insulating portion, where the lower insulating portion includes a first insulator and an insulating layer surrounding the first insulator, the upper insulating portion includes a second insulator and a buffer layer surrounding the second insulator. A part of the buffer layer interfaces between the first insulator and the second insulator, and the outer sidewall of the buffer layer and the sidewall of the first insulator are leveled.
Abstract:
A shallow trench isolation (STI) and method of forming the same is provided. The STI structure includes an upper insulating portion and a lower insulating portion, where the lower insulating portion includes a first insulator and an insulating layer surrounding the first insulator, the upper insulating portion includes a second insulator and a buffer layer surrounding the second insulator. Apart of the buffer layer interfaces between the first insulator and the second insulator, and the outer sidewall of the buffer layer and the sidewall of the first insulator are leveled.
Abstract:
A method for manufacturing semiconductor structures includes providing a substrate having a plurality of mandrel patterns and a plurality of dummy patterns, simultaneously forming a plurality of first spacers on sidewalls of the mandrel patterns and a plurality of second spacers on sidewalls of the dummy patterns, and removing the second spacers and the mandrel patterns to form a plurality of spacer patterns on the substrate.
Abstract:
A method of fabricating a patterned structure of a semiconductor device is provided. First, a substrate having a first region and a second region is provided. A target layer, a hard mask layer and a first patterned mask layer are then sequentially formed on the substrate. A first etching process is performed by using the first patterned mask layer as an etch mask so that a patterned hard mask layer is therefore formed. Spacers are respectively formed on each sidewall of the patterned hard mask layer. Then, a second patterned mask layer is formed on the substrate. A second etching process is performed to etch the patterned hard mask layer in the second region. After the exposure of the spacers, the patterned hard mask layer is used as an etch mask and an exposed target layer is removed until the exposure of the corresponding substrate.
Abstract:
A semiconductor structure includes a gate structure disposed on a substrate and having an outer spacer, a recess disposed in the substrate and adjacent to the gate structure, a doped epitaxial material filling up the recess, a cap layer including an undoped epitaxial material and disposed on the doped epitaxial material, a lightly doped drain disposed below the cap layer and sandwiched between the doped epitaxial material and the cap layer, and a silicide disposed on the cap layer and covering the doped epitaxial material to cover the cap layer together with the outer spacer without directly contacting the lightly doped drain.
Abstract:
A replacement gate process is disclosed. A substrate and a dummy gate structure formed on the substrate is provided, wherein the dummy gate structure comprises a dummy layer on the substrate, a hard mask layer on the dummy layer, spacers at two sides of the dummy layer and the hard mask layer, and a contact etch stop layer (CESL) covering the substrate, the spacers and the hard mask layer. The spacers and the CESL are made of the same material. Then, a top portion of the CESL is removed to expose the hard mask layer. Next, the hard mask layer is removed. Afterward, the dummy layer is removed to form a trench.
Abstract:
A semiconductor structure includes a gate structure disposed on a substrate and having an outer spacer, a recess disposed in the substrate and adjacent to the gate structure, a doped epitaxial material filling up the recess, a cap layer including an undoped epitaxial material and disposed on the doped epitaxial material, a lightly doped drain disposed below the cap layer and sandwiched between the doped epitaxial material and the cap layer, and a silicide disposed on the cap layer and covering the doped epitaxial material to cover the cap layer together with the outer spacer without directly contacting the lightly doped drain.
Abstract:
The semiconductor structure includes a plurality of first insulators in a substrate, a common insulating layer surrounding the sidewall and the bottom of said first insulators in said substrate, and suspended portions of said substrate on said common insulating layer.
Abstract:
A method of fabricating a patterned structure of a semiconductor device is provided. First, a substrate having a first region and a second region is provided. A target layer, a hard mask layer and a first patterned mask layer are then sequentially formed on the substrate. A first etching process is performed by using the first patterned mask layer as an etch mask so that a patterned hard mask layer is therefore formed. Spacers are respectively formed on each sidewall of the patterned hard mask layer. Then, a second patterned mask layer is formed on the substrate. A second etching process is performed to etch the patterned hard mask layer in the second region. After the exposure of the spacers, the patterned hard mask layer is used as an etch mask and an exposed target layer is removed until the exposure of the corresponding substrate.