摘要:
In one exemplary embodiment, a semiconductor structure including: a SOI substrate having of a top silicon layer overlying an insulation layer, the insulation layer overlies a bottom silicon layer; a capacitor disposed at least partially in the insulation layer; a device disposed at least partially on the top silicon layer, where the device is coupled to a doped portion of the top silicon layer; a backside strap of first epitaxially-deposited material, at least a first portion of the backside strap underlies the doped portion of the top silicon layer, the backside strap is coupled to the doped portion of the top silicon layer at a first end of the backside strap and to the capacitor at a second end of the backside strap; and second epitaxially-deposited material that at least partially overlies the doped portion of the top silicon layer, the second epitaxially-deposited material further at least partially overlies the first portion.
摘要:
An FET device characterized as being an asymmetrical tunnel FET (TFET) is disclosed. The TFET includes a gate-stack, a channel region underneath the gate-stack, a first and a second junction adjoining the gate-stack and being capable for electrical continuity with the channel. The first junction and the second junction are of different conductivity types. The TFET also includes spacer formations in a manner that the spacer formation on one side of the gate-stack is thinner than on the other side.
摘要:
A method of forming a transistor device includes forming a patterned gate structure over a semiconductor substrate; forming a spacer layer over the semiconductor substrate and patterned gate structure; removing horizontally disposed portions of the spacer layer so as to form a vertical sidewall spacer adjacent the patterned gate structure; and forming a raised source/drain (RSD) structure over the semiconductor substrate and adjacent the vertical sidewall spacer, wherein the RSD structure has a substantially vertical sidewall profile so as to abut the vertical sidewall spacer and produce one of a compressive and a tensile strain on a channel region of the semiconductor substrate below the patterned gate structure.
摘要:
In one exemplary embodiment, a semiconductor structure includes: a semiconductor-on-insulator substrate with a top semiconductor layer overlying an insulation layer and the insulation layer overlies a bottom substrate layer; at least one first device at least partially overlying and disposed upon a first portion of the top semiconductor layer, where the first portion has a first thickness, a first width and a first depth; and at least one second device at least partially overlying and disposed upon a second portion of the top semiconductor layer, where the second portion has a second thickness, a second width and a second depth, where at least one of the following holds: the first thickness is greater than the second thickness, the first width is greater than the second width and the first depth is greater than the second depth.
摘要:
A method of forming a transistor device includes forming a patterned gate structure over a semiconductor substrate; forming a spacer layer over the semiconductor substrate and patterned gate structure; removing horizontally disposed portions of the spacer layer so as to form a vertical sidewall spacer adjacent the patterned gate structure; and forming a raised source/drain (RSD) structure over the semiconductor substrate and adjacent the vertical sidewall spacer, wherein the RSD structure has a substantially vertical sidewall profile so as to abut the vertical sidewall spacer and produce one of a compressive and a tensile strain on a channel region of the semiconductor substrate below the patterned gate structure.
摘要:
A method for fabricating an FET device characterized as being a tunnel FET (TFET) device is disclosed. The method includes processing a gate-stack, and processing the adjoining source and drain junctions, which are of a first conductivity type. A hardmask is formed covering the gate-stack and the junctions. A tilted angle ion implantation is performed which is received by a first portion of the hardmask, and it is not received by a second portion of the hardmask due to the shadowing of the gate-stack. The implanted portion of the hardmask is removed and one of the junctions is exposed. The junction is etched away, and a new junction, typically in-situ doped to a second conductivity type, is epitaxially grown into its place. A device characterized as being an asymmetrical TFET is also disclosed. The source and drain junctions of the TFET are of different conductivity types, and the TFET also includes spacer formations in a manner that the spacer formation on one side of the gate-stack is thinner than on the other side of the gate-stack.
摘要:
A high-performance semiconductor structure and a method of fabricating such a structure are provided. The semiconductor structure includes at least one gate stack, e.g., FET, located on an upper surface of a semiconductor substrate. The structure further includes a first epitaxy semiconductor material that induces a strain upon a channel of the at least one gate stack. The first epitaxy semiconductor material is located at a footprint of the at least one gate stack substantially within a pair of recessed regions in the substrate which are present on opposite sides of the at least one gate stack. A diffused extension region is located within an upper surface of said first epitaxy semiconductor material in each of the recessed regions. The structure further includes a second epitaxy semiconductor material located on an upper surface of the diffused extension region. The second epitaxy semiconductor material has a higher dopant concentration than the first epitaxy semiconductor material.
摘要:
An FET device structure has a Fin-FET device with a fin of a Si based material. An oxide element is abutting the fin and exerts pressure onto the fin. The Fin-FET device channel is compressively stressed due to the pressure on the fin. A further FET device structure has Fin-FET devices in a row. An oxide element extending perpendicularly to the row of fins is abutting the fins and exerts pressure onto the fins. Device channels of the Fin-FET devices are compressively stressed due to the pressure on the fins.
摘要:
An electrical device is provided that in one embodiment includes a semiconductor-on-insulator (SOI) substrate having a semiconductor layer with a thickness of less than 10 nm. A semiconductor device having a raised source region and a raised drain region of a single crystal semiconductor material of a first conductivity is present on a first surface of the semiconductor layer. A resistor composed of the single crystal semiconductor material of the first conductivity is present on a second surface of the semiconductor layer. A method of forming the aforementioned electrical device is also provided.
摘要:
FDSOI devices and methods for the fabrication thereof are provided. In one aspect, a method for fabricating a device includes the following steps. A wafer is provided having a substrate, a BOX and a SOI layer. A hardmask layer is deposited over the SOI layer. A photoresist layer is deposited over the hardmask layer and patterned into groups of segments. A tilted implant is performed to damage all but those portions of the hardmask layer covered or shadowed by the segments. Portions of the hardmask layer damaged by the implant are removed. A first etch is performed through the hardmask layer to form a deep trench in the SOI layer, the BOX and at least a portion of the substrate. The hardmask layer is patterned using the patterned photoresist layer. A second etch is performed through the hardmask layer to form shallow trenches in the SOI layer.