摘要:
A transistor structure includes a first type of transistor (e.g., P-type) positioned in a first area of the substrate, and a second type of transistor (e.g., N-type) positioned in a second area of the substrate. A first type of stressing layer (compressive conformal nitride) is positioned above the first type of transistor and a second type of stressing layer (compressive tensile nitride) is positioned above the second type of transistor. In addition, another first type of stressing layer (compressive oxide) is positioned above the first type of transistor. Further, another second type of stressing layer (compressive oxide) is positioned above the second type of transistor.
摘要:
A transistor structure includes a first type of transistor (e.g., P-type) positioned in a first area of the substrate, and a second type of transistor (e.g., N-type) positioned in a second area of the substrate. A first type of stressing layer (compressive conformal nitride) is positioned above the first type of transistor and a second type of stressing layer (compressive tensile nitride) is positioned above the second type of transistor. In addition, another first type of stressing layer (compressive oxide) is positioned above the first type of transistor. Further, another second type of stressing layer (compressive oxide) is positioned above the second type of transistor.
摘要:
A method is provided of fabricating complementary stressed semiconductor devices, e.g., an NFET having a tensile stressed channel and a PFET having a compressive stressed channel. In such method, a first semiconductor region having a lattice constant larger than silicon can be epitaxially grown on an underlying semiconductor region of a substrate. The first semiconductor region can be grown laterally adjacent to a second semiconductor region which has a lattice constant smaller than that of silicon. Layers consisting essentially of silicon can be grown epitaxially onto exposed major surfaces of the first and second semiconductor regions after which gates can be formed which overlie the epitaxially grown silicon layers. Portions of the first and second semiconductor regions adjacent to the gates can be removed to form recesses. Regions consisting essentially of silicon can be grown within the recesses to form embedded silicon regions. Source and drain regions then can be formed in the embedded silicon regions. The difference between the lattice constant of silicon and that of the underlying first and second regions results in tensile stressed silicon over the first semiconductor region and compressive stressed silicon over the second semiconductor region.
摘要:
The present invention relates to improved complementary metal-oxide-semiconductor (CMOS) devices with stressed channel regions. Specifically, each improved CMOS device comprises an field effect transistor (FET) having a channel region located in a semiconductor device structure, which has a top surface oriented along one of a first set of equivalent crystal planes and one or more additional surfaces oriented along a second, different set of equivalent crystal planes. Such additional surfaces can be readily formed by crystallographic etching. Further, one or more stressor layers with intrinsic compressive or tensile stress are located over the additional surfaces of the semiconductor device structure and are arranged and constructed to apply tensile or compressive stress to the channel region of the FET. Such stressor layers can be formed by pseudomorphic growth of a semiconductor material having a lattice constant different from the semiconductor device structure.
摘要:
The present invention relates to improved complementary metal-oxide-semiconductor (CMOS) devices with stressed channel regions. Specifically, each improved CMOS device comprises an field effect transistor (FET) having a channel region located in a semiconductor device structure, which has a top surface oriented along one of a first set of equivalent crystal planes and one or more additional surfaces oriented along a second, different set of equivalent crystal planes. Such additional surfaces can be readily formed by crystallographic etching. Further, one or more stressor layers with intrinsic compressive or tensile stress are located over the additional surfaces of the semiconductor device structure and are arranged and constructed to apply tensile or compressive stress to the channel region of the FET. Such stressor layers can be formed by pseudomorphic growth of a semiconductor material having a lattice constant different from the semiconductor device structure.
摘要:
A method is provided of fabricating complementary stressed semiconductor devices, e.g., an NFET having a tensile stressed channel and a PFET having a compressive stressed channel. In such method, a first semiconductor region having a lattice constant larger than silicon can be epitaxially grown on an underlying semiconductor region of a substrate. The first semiconductor region can be grown laterally adjacent to a second semiconductor region which has a lattice constant smaller than that of silicon. Layers consisting essentially of silicon can be grown epitaxially onto exposed major surfaces of the first and second semiconductor regions after which gates can be formed which overlie the epitaxially grown silicon layers. Portions of the first and second semiconductor regions adjacent to the gates can be removed to form recesses. Regions consisting essentially of silicon can be grown within the recesses to form embedded silicon regions. Source and drain regions then can be formed in the embedded silicon regions. The difference between the lattice constant of silicon and that of the underlying first and second regions results in tensile stressed silicon over the first semiconductor region and compressive stressed silicon over the second semiconductor region.
摘要:
The present invention relates to a semiconductor substrate comprising at least first and second device regions, wherein the first device region comprises a first recess having interior surfaces oriented along a first set of equivalent crystal planes, and wherein the second device region comprises a second recess having interior surfaces oriented along a second, different set of equivalent crystal planes. A semiconductor device structure can be formed using such a semiconductor substrate. Specifically, at least one n-channel field effect transistor (n-FET) can be formed at the first device region, which comprises a channel that extends along the interior surfaces of the first recess. At least one p-channel field effect transistor (p-FET) can be formed at the second device region, which comprises a channel that extends along the interior surfaces of the second recess.
摘要:
The present invention relates to a method of fabricating a semiconductor substrate that includes forming at least first and second device regions, wherein the first device region includes a first recess having interior surfaces oriented along a first set of equivalent crystal planes, and wherein the second device region includes a second recess having interior surfaces oriented along a second, different set of equivalent crystal planes. The semiconductor device structure formed using such a semiconductor substrate includes at least one n-channel field effect transistor (n-FET) formed at the first device region having a channel that extends along the interior surfaces of the first recess, and at least one p-channel field effect transistor (p-FET) formed at the second device region having a channel that extends along the interior surfaces of the second recess.
摘要:
An integrated circuit system is provided including forming a circuit element on a wafer, forming a stress formation layer having a non-uniform profile over the wafer, and forming an interlayer dielectric over the stress formation layer and the wafer.
摘要:
A field effect structure and a method for fabricating the field effect structure include a germanium containing channel interposed between a plurality of source and drain regions. The germanium containing channel is coplanar with the plurality of source and drain regions, and the germanium containing channel includes a germanium containing material having a germanium content greater than the germanium content of the plurality of source and drain regions.