摘要:
The present disclosure provides devices and methods which provide for strained epitaxial regions. A method of semiconductor fabrication is provided that includes forming a gate structure over a fin of a semiconductor substrate and forming a recess in the fin adjacent the gate structure. A sidewall of the recess is then altered. Exemplary alterations include having an altered profile, treating the sidewall, and forming a layer on the sidewall. An epitaxial region is then grown in the recess. The epitaxial region interfaces the altered sidewall of the recess and is a strained epitaxial region.
摘要:
The present disclosure provides devices and methods which provide for strained epitaxial regions. A method of semiconductor fabrication is provided that includes forming a gate structure over a fin of a semiconductor substrate and forming a recess in the fin adjacent the gate structure. A sidewall of the recess is then altered. Exemplary alterations include having an altered profile, treating the sidewall, and forming a layer on the sidewall. An epitaxial region is then grown in the recess. The epitaxial region interfaces the altered sidewall of the recess and is a strained epitaxial region.
摘要:
A method of fabricating a semiconductor device includes providing a substrate having a fin disposed thereon. A gate structure is formed on the fin. The gate structure interfaces at least two sides of the fin. A stress film is formed on the substrate including on the fin. The substrate including the stress film is annealed. The annealing provides a tensile strain in a channel region of the fin. For example, a compressive strain in the stress film may be transferred to form a tensile stress in the channel region of the fin.
摘要:
A method for fabricating a semiconductor device is disclosed. An exemplary embodiment of the method includes providing a substrate; forming a fin structure over the substrate; forming a gate structure, wherein the gate structure overlies a portion of the fin structure; forming a sacrificial-offset-protection layer over another portion of the fin structure; and thereafter performing an implantation process.
摘要:
An exemplary structure for a field effect transistor (FET) comprises a silicon substrate comprising a first surface; a channel portion over the first surface, wherein the channel portion has a second surface at a first height above the first surface, and a length parallel to first surface; and two source/drain (S/D) regions on the first surface and surrounding the channel portion along the length of the channel portion, wherein the two S/D regions comprise SiGe, Ge, Si, SiC, GeSn, SiGeSn, SiSn, or III-V material.
摘要:
An integrated circuit structure includes a semiconductor substrate, and a FinFET over the semiconductor substrate. The FinFET includes a semiconductor fin; a gate dielectric on a top surface and sidewalls of the semiconductor fin; a gate electrode on the gate dielectric; and a source/drain region at an end of the semiconductor fin. A first pair of shallow trench isolation (STI) regions includes portions directly underlying portions of the source/drain regions, wherein the first pair of STI regions is separated by, and adjoining a semiconductor strip. The first pair of STI regions further has first top surfaces. A second pair of STI regions comprises portions directly underlying the gate electrode, wherein the second pair of STI regions is separated from each other by, and adjoining, the semiconductor strip. The second pair of STI regions has second top surfaces higher than the first top surfaces.
摘要:
A semiconductor device and method of fabricating thereof is described that includes a substrate having a fin with a top surface and a first and second lateral sidewall. A hard mask layer may be formed on the top surface of the fin (e.g., providing a dual-gate device). A gate dielectric layer and work function metal layer are formed on the first and second lateral sidewalls of the fin. A silicide layer is formed on the work function metal layer on the first and the second lateral sidewalls of the fin. The silicide layer may be a fully-silicided layer and may provide a stress to the channel region of the device disposed in the fin.
摘要:
A semiconductor device and method for fabricating a semiconductor device is disclosed. An exemplary semiconductor device includes a substrate and a 3D structure disposed over the substrate. The semiconductor device further includes a dielectric layer disposed over the 3D structure, a WFMG layer disposed over the dielectric layer, and a gate structure disposed over the WFMG layer. The gate structure traverses the 3D structure and separates a source region and a drain region of the 3D structure. The source and drain region define a channel region therebetween. The gate structure induces a stress in the channel region.
摘要:
An integrated circuit structure includes a semiconductor substrate, and a FinFET over the semiconductor substrate. The FinFET includes a semiconductor fin; a gate dielectric on a top surface and sidewalls of the semiconductor fin; a gate electrode on the gate dielectric; and a source/drain region at an end of the semiconductor fin. A first pair of shallow trench isolation (STI) regions includes portions directly underlying portions of the source/drain regions, wherein the first pair of STI regions is separated by, and adjoining a semiconductor strip. The first pair of STI regions further has first top surfaces. A second pair of STI regions comprises portions directly underlying the gate electrode, wherein the second pair of STI regions is separated from each other by, and adjoining, the semiconductor strip. The second pair of STI regions has second top surfaces higher than the first top surfaces.
摘要:
A method for fabricating a semiconductor device is disclosed. An exemplary embodiment of the method includes providing a substrate; forming a fin structure over the substrate; forming a gate structure, wherein the gate structure overlies a portion of the fin structure; forming a sacrificial-offset-protection layer over another portion of the fin structure; and thereafter performing an implantation process.