Abstract:
A transistor and a method for forming the transistor are provided. The method includes performing at least one implantation operation in the transistor channel area, then forming a silicon carbide/silicon composite film over the implanted area prior to introducing further dopant impurities. A halo implantation operation with a low tilt angle is used to form areas of high dopant concentration at edges of the transistor channel to alleviate short channel effects. The transistor structure includes a reduced dopant impurity concentration at the substrate interface with the gate dielectric and a peak concentration about 10-50 nm below the surface. The dopant profile has high dopant impurity concentration areas at opposed ends of the transistor channel.
Abstract:
Semiconductor structures including two-dimensional (2-D) materials and methods of manufacture thereof are described. By implementing 2-D materials in transistor gate architectures such as field-effect transistors (FETs), the semiconductor structures in accordance with this disclosure include vertical gate structures and incorporate 2-D materials such as graphene, transition metal dichalcogenides (TMDs), or phosphorene.
Abstract:
A semiconductor device including a Fin FET device includes a fin structure protruding from a substrate layer and having a length extending in a first direction. A channel layer is formed on the fin structure. A gate stack including a gate electrode layer and a gate dielectric layer extending in a second direction perpendicular to the first direction is formed over the channel layer covering a portion of the length of the fin structure. The source and drain contacts are formed over trenches that extend into a portion of a height of the fin structure.
Abstract:
In a method of manufacturing a gate-all-around field effect transistor, a trench is formed over a substrate. Nano-tube structures are arranged into the trench, each of which includes a carbon nanotube (CNT) having a gate dielectric layer wrapping around the CNT and a gate electrode layer over the gate dielectric layer. An anchor layer is formed in the trench. A part of the anchor layer is removed at a source/drain (S/D) region. The gate electrode layer and the gate dielectric layer are removed at the S/D region, thereby exposing a part of the CNT at the S/D region. An S/D electrode layer is formed on the exposed part of the CNT. A part of the anchor layer is removed at a gate region, thereby exposing a part of the gate electrode layer of the gate structure. A gate contact layer is formed on the exposed part of the gate electrode layer.
Abstract:
A MOSFET disposed between shallow trench isolation (STI) structures includes an epitaxial silicon layer formed over a substrate surface and extending over inwardly extending ledges of the STI structures. The gate width of the MOSFET is therefore the width of the epitaxial silicon layer and greater than the width of the original substrate surface between the STI structures. The epitaxial silicon layer is formed over the previously doped channel and is undoped upon deposition. A thermal activation operation may be used to drive dopant impurities into the transistor channel region occupied by the epitaxial silicon layer but the dopant concentration at the channel location where the epitaxial silicon layer intersects with the gate dielectric, is minimized.
Abstract:
A semiconductor device including a Fin FET device includes a fin structure protruding from a substrate layer and having a length extending in a first direction. A channel layer is formed on the fin structure. A gate stack including a gate electrode layer and a gate dielectric layer extending in a second direction perpendicular to the first direction is formed over the channel layer covering a portion of the length of the fin structure. The source and drain contacts are formed over trenches that extend into a portion of a height of the fin structure.
Abstract:
In a method of manufacturing a gate-all-around field effect transistor, a trench is formed over a substrate. Nano-tube structures are arranged into the trench, each of which includes a carbon nanotube (CNT) having a gate dielectric layer wrapping around the CNT and a gate electrode layer over the gate dielectric layer. An anchor layer is formed in the trench. A part of the anchor layer is removed at a source/drain (S/D) region. The gate electrode layer and the gate dielectric layer are removed at the S/D region, thereby exposing a part of the CNT at the S/D region. An S/D electrode layer is formed on the exposed part of the CNT. A part of the anchor layer is removed at a gate region, thereby exposing a part of the gate electrode layer of the gate structure. A gate contact layer is formed on the exposed part of the gate electrode layer.
Abstract:
A NEMS device structure and a method for forming the same are provided. The NEMS device structure includes a substrate and an interconnect structure formed over the substrate. The NEMS device structure includes a dielectric layer formed over the interconnect structure and a beam structure formed in and over the dielectric layer. The beam structure includes a fixed portion and a moveable portion, the fixed portion is extended vertically, and the movable portion is extended horizontally. The NEMS device structure includes a cap structure formed over the dielectric layer and the beam structure and a cavity formed between the beam structure and the cap structure.
Abstract:
A multi-gate semiconductor device is formed including a semiconductor substrate. The multi-gate semiconductor device also includes a first transistor including a first fin portion extending above the semiconductor substrate. The first transistor has a first channel region formed therein. The first channel region includes a first channel region portion doped at a first concentration of a first dopant type and a second channel region portion doped at a second concentration of the first dopant type. The second concentration is higher than the first concentration. The first transistor further includes a first gate electrode layer formed over the first channel region. The first gate electrode layer may be of a second dopant type. The first dopant type may be N-type and the second dopant type may be P-type. The second channel region portion may be formed over the first channel region portion.
Abstract:
A NEMS device structure and a method for forming the same are provided. The NEMS device structure includes a first dielectric layer formed over a substrate, and a first conductive layer formed in the first dielectric layer. The NEMS device structure includes a second dielectric layer formed over the first dielectric layer, and a first supporting electrode a second supporting electrode and a beam structure formed in the second dielectric layer. The beam structure is formed between the first supporting electrode and the second supporting electrode, and the beam structure has a T-shaped structure. The NEMS device structure includes a first through hole formed between the first supporting electrode and the beam structure, and a second through hole formed between the second supporting electrode and the beam structure.