Abstract:
A method of fabricating a semiconductor device is provided. The method forms a fin arrangement on a semiconductor substrate, the fin arrangement comprising one or more semiconductor fin structures. The method continues by forming a gate arrangement overlying the fin arrangement, where the gate arrangement includes one or more adjacent gate structures. The method proceeds by forming an outer spacer around sidewalls of each gate structure. The fin arrangement is then selectively etched, using the gate structure and the outer spacer(s) as an etch mask, resulting in one or more semiconductor fin sections underlying the gate structure(s). The method continues by forming a stress/strain inducing material adjacent sidewalls of the one or more semiconductor fin sections.
Abstract:
Embodiments of a method are provided for fabricating a non-planar semiconductor device including a substrate having a plurality of raised crystalline structures formed thereon. In one embodiment, the method includes the steps of amorphorizing a portion of each raised crystalline structure included within the plurality of raised crystalline structures, forming a sacrificial strain layer over the plurality of raised crystalline structures to apply stress to the amorphized portion of each raised crystalline structure, annealing the non-planar semiconductor device to recrystallize the amorphized portion of each raised crystalline structure in a stress-memorized state, and removing the sacrificial strain layer.
Abstract:
Methods for fabricating FinFET structures with stress-inducing source/drain-forming spacers and FinFET structures having such spacers are provided herein. In one embodiment, a method for fabricating a FinFET structure comprises fabricating a plurality of parallel fins overlying a semiconductor substrate. Each of the fins has sidewalls. A gate structure is fabricated overlying a portion of each of the fins. The gate structure has sidewalls and overlies channels within the fins. Stress-inducing sidewall spacers are formed about the sidewalls of the fins and the sidewalls of the gate structure. The stress-inducing sidewall spacers induce a stress within the channels. First conductivity-determining ions are implanted into the fins using the stress-inducing sidewall spacers and the gate structure as an implantation mask to form source and drain regions within the fins.
Abstract:
A metal oxide semiconductor transistor device having a reduced gate height is provided. One embodiment of the device includes a substrate having a layer of semiconductor material, a gate structure overlying the layer of semiconductor material, and source/drain recesses formed in the semiconductor material adjacent to the gate structure, such that remaining semiconductor material is located below the source/drain recesses. The device also includes shallow source/drain implant regions formed in the remaining semiconductor material, and epitaxially grown, in situ doped, semiconductor material in the source/drain recesses.
Abstract:
A method for fabricating a MOSFET (e.g., a PMOS FET) includes providing a semiconductor substrate having surface characterized by a (110) surface orientation or (110) sidewall surfaces, forming a gate structure on the surface, and forming a source extension and a drain extension in the semiconductor substrate asymmetrically positioned with respect to the gate structure. An ion implantation process is performed at a non-zero tilt angle. At least one spacer and the gate electrode mask a portion of the surface during the ion implantation process such that the source extension and drain extension are asymmetrically positioned with respect to the gate structure by an asymmetry measure.
Abstract:
A stressed field effect transistor and methods for its fabrication are provided. The field effect transistor comprises a silicon substrate with a gate insulator overlying the silicon substrate. A gate electrode overlies the gate insulator and defines a channel region in the silicon substrate underlying the gate electrode. A first silicon germanium region having a first thickness is embedded in the silicon substrate and contacts the channel region. A second silicon germanium region having a second thickness greater than the first thickness and spaced apart from the channel region is also embedded in the silicon substrate.
Abstract:
Methods are disclosed for providing stacking fault reduced epitaxially grown silicon for use in hybrid surface orientation structures. In one embodiment, a method includes depositing a silicon nitride liner over a silicon oxide liner in an opening, etching to remove the silicon oxide liner and silicon nitride liner on a lower surface of the opening, undercutting the silicon nitride liner adjacent to the lower surface, and epitaxially growing silicon in the opening. The silicon is substantially reduced of stacking faults because of the negative slope created by the undercut.
Abstract:
A method and arrangement for reducing the series resistance of the source and drain in a MOSFET device provides for epitaxially grown regions on top of the source and drain extensions to cover portions of the top surfaces of the silicide regions formed on the substrate. The epitaxial material provides an extra flow path for current to flow through to the silicide from the extension, as well as increasing the surface area between the source/drain and the silicide to reduce the contact resistance between the source/drain and the silicide.
Abstract:
Semiconductor devices with improved transistor performance are fabricated by forming a composite oxide/nitride liner under a gate electrode sidewall spacer. Embodiments include depositing a conformal oxide layer by decoupled plasma deposition, depositing a conformal nitride layer by decoupled plasma deposition, depositing a spacer layer and then etching.
Abstract:
A method is provided, the method including forming a gate dielectric layer above a substrate layer, forming a gate conductor layer above the gate dielectric layer, forming a first hard mask layer above the gate conductor layer, and forming a second hard mask layer above the first hard mask layer. The method also includes forming a trimmed photoresist mask above the second hard mask layer, and forming a patterned hard mask in the second hard mask layer using the trimmed photoresist mask to remove portions of the second hard mask layer, the patterned hard mask having a first dimension. The method further includes forming a selectively etched hard mask in the first hard mask layer by removing portions of the first hard mask layer adjacent the patterned hard mask, the selectively etched hard mask having a second dimension less than the first dimension, and forming a gate structure using the selectively etched hard mask to remove portions of the gate conductor layer above the gate dielectric layer.