摘要:
Various embodiments include methods of forming semiconductor structures. In one embodiment, a method includes: providing a precursor structure including a substrate and a set of fins overlying the substrate; forming a dummy epitaxy between the fins in the set of fins; masking a first group of fins in the set of fins and the dummy epitaxy between the first group of fins in the set of fins; removing the dummy epitaxy to expose a second group of the fins; forming a first in-situ doped epitaxy between the exposed fins; masking the second group of fins in the set of fins and the in-situ doped epitaxy between the second group of fins in the set of fins; unmasking the first group of fins; removing the dummy epitaxy layer between the first group of fins to expose of the first group of fins; and forming a second in-situ doped epitaxy between the exposed fins.
摘要:
A CMOS device structure and method of manufacturing the same are provided. The CMOS device structure includes a substrate having a first region and a second region. The CMOS device structure further includes a first gate formed in the first region overlying a first channel region in the substrate. The CMOS device structure further includes a first pair of source/drain regions formed in the first region on either side of the first channel region. Each region of the pair of source/drain regions has a substantially V-shaped concave top surface.
摘要:
A fin resistor and method of fabrication are disclosed. The fin resistor comprises a plurality of fins arranged in a linear pattern with an alternating pattern of epitaxial regions. An anneal diffuses dopants from the epitaxial regions into the fins. Contacts are connected to endpoint epitaxial regions to allow the resistor to be connected to more complex integrated circuits.
摘要:
A method and structure of an embedded stressor in a semiconductor transistor device having a sigma-shaped channel sidewall and a vertical isolation sidewall. The embedded stressor structure is made by a first etch to form a recess in a substrate having a gate and first and second spacers. The second spacers are removed and a second etch creates a step in the recess on a channel sidewall. An anisotropic etch creates facets in the channel sidewall of the recess. Where the facets meet, a vertex is formed. The depth of the vertex is determined by the second etch depth (step depth). The lateral position of the vertex is determined by the thickness of the first spacers. A semiconductor material having a different lattice spacing than the substrate is formed in the recess to achieve the embedded stressor structure.
摘要:
A lower raised source/drain region is formed on a planar source/drain region of a planar field effect transistor or a surface of a portion of semiconductor fin adjoining a channel region of a fin field effect transistor. At least one contact-level dielectric material layer is formed and planarized, and a contact via hole extending to the lower raised source/drain region is formed in the at least one contact-level dielectric material layer. An upper raised source/drain region is formed on a top surface of the lower raised source/drain region. A metal semiconductor alloy portion and a contact via structure are formed within the contact via hole. Formation of the upper raised source/drain region is limited to a bottom portion of the contact via hole, thereby preventing formation of, and increase of parasitic capacitance by, any additional raised structure in source/drain regions that are not contacted.
摘要:
A planar semiconductor device including a semiconductor on insulator (SOI) substrate with source and drain portions having a thickness of less than 10 nm that are separated by a multi-layered strained channel The multi-layer strained channel of the SOI layer includes a first layer with a first lattice dimension that is present on the buried dielectric layer of the SOI substrate, and a second layer of a second lattice dimension that is in direct contact with the first layer of the multi-layer strained channel portion. A functional gate structure is present on the multi-layer strained channel portion of the SOI substrate. The semiconductor device having the multi-layered channel may also be a finFET semiconductor device.
摘要:
A method of fabricating a semiconductor device that includes providing a substrate having at least a first semiconductor layer atop a dielectric layer, wherein the first semiconductor layer has a first thickness of less than 10 nm. The first semiconductor layer is etched with a halide based gas at a temperature of less than 675° C. to a second thickness that is less than the first thickness. A second semiconductor layer is epitaxially formed on an etched surface of the first semiconductor layer. A gate structure is formed directly on the second semiconductor layer. A source region and a drain region is formed on opposing sides of the gate structure.
摘要:
Disclosed is a semiconductor article which includes a semiconductor substrate; a gate structure having a spacer adjacent to a conducting material of the gate structure wherein a corner of the spacer is faceted to create a faceted space between the faceted spacer and the semiconductor substrate; and a raised source/drain adjacent to the gate structure, the raised source/drain filling the faceted space and having a surface parallel to the semiconductor substrate. Also disclosed is a method of making the semiconductor article.
摘要:
A method and structure of an embedded stressor in a semiconductor transistor device having a sigma-shaped channel sidewall and a vertical isolation sidewall. The embedded stressor structure is made by a first etch to form a recess in a substrate having a gate and first and second spacers. The second spacers are removed and a second etch creates a step in the recess on a channel sidewall. An anisotropic etch creates facets in the channel sidewall of the recess. Where the facets meet, a vertex is formed. The depth of the vertex is determined by the second etch depth (step depth). The lateral position of the vertex is determined by the thickness of the first spacers. A semiconductor material having a different lattice spacing than the substrate is formed in the recess to achieve the embedded stressor structure.
摘要:
An improved silicon carbon film structure is disclosed. The film structure comprises multiple layers of silicon carbon and silicon. The multiple layers form stress film structures that have increased substitutional carbon content, and serve to induce stresses that improve carrier mobility for certain types of field effect transistors.