Embodiments of the disclosure are in the field of advanced integrated circuit structure fabrication and, in particular, 10 nanometer node and smaller integrated circuit structure fabrication and the resulting structures. In an example, an integrated circuit structure includes a first plurality of conductive interconnect lines in and spaced apart by a first ILD layer, wherein individual ones of the first plurality of conductive interconnect lines comprise a first conductive barrier material along sidewalls and a bottom of a first conductive fill material. A second plurality of conductive interconnect lines is in and spaced apart by a second ILD layer above the first ILD layer, wherein individual ones of the second plurality of conductive interconnect lines comprise a second conductive barrier material along sidewalls and a bottom of a second conductive fill material, wherein the second conductive fill material is different in composition from the first conductive fill material.

Embodiments of the disclosure are in the field of advanced integrated circuit structure fabrication and, in particular, 10 nanometer node and smaller integrated circuit structure fabrication and the resulting structures. In an example, an integrated circuit structure includes a first plurality of conductive interconnect lines in and spaced apart by a first ILD layer, wherein individual ones of the first plurality of conductive interconnect lines comprise a first conductive barrier material along sidewalls and a bottom of a first conductive fill material. A second plurality of conductive interconnect lines is in and spaced apart by a second ILD layer above the first ILD layer, wherein individual ones of the second plurality of conductive interconnect lines comprise a second conductive barrier material along sidewalls and a bottom of a second conductive fill material, wherein the second conductive fill material is different in composition from the first conductive fill material.

Embodiments of the disclosure are in the field of advanced integrated circuit structure fabrication and, in particular, 10 nanometer node and smaller integrated circuit structure fabrication and the resulting structures. In an example, an integrated circuit structure includes first and second gate dielectric layers over a fin. First and second gate electrodes are over the first and second gate dielectric layers, respectively, the first and second gate electrodes both having an insulating cap having a top surface. First dielectric spacer are adjacent the first side of the first gate electrode. A trench contact structure is over a semiconductor source or drain region adjacent first and second dielectric spacers, the trench contact structure comprising an insulating cap on a conductive structure, the insulating cap of the trench contact structure having a top surface substantially co-planar with the insulating caps of the first and second gate electrodes.

Embodiments of the disclosure are in the field of advanced integrated circuit structure fabrication and, in particular, 10 nanometer node and smaller integrated circuit structure fabrication and the resulting structures. In an example, an integrated circuit structure includes first and second gate dielectric layers over a fin. First and second gate electrodes are over the first and second gate dielectric layers, respectively, the first and second gate electrodes both having an insulating cap having a top surface. First dielectric spacer are adjacent the first side of the first gate electrode. A trench contact structure is over a semiconductor source or drain region adjacent first and second dielectric spacers, the trench contact structure comprising an insulating cap on a conductive structure, the insulating cap of the trench contact structure having a top surface substantially co-planar with the insulating caps of the first and second gate electrodes.

Methods of forming multi-tiered semiconductor devices are described, along with apparatus and systems that include them. In one such method, an opening is formed in a tier of semiconductor material and a tier of dielectric. A portion of the tier of semiconductor material exposed by the opening is processed so that the portion is doped differently than the remaining semiconductor material in the tier. At least substantially all of the remaining semiconductor material of the tier is removed, leaving the differently doped portion of the tier of semiconductor material as a charge storage structure. A tunneling dielectric is formed on a first surface of the charge storage structure and an intergate dielectric is formed on a second surface of the charge storage structure. Additional embodiments are also described.

Methods of forming multi-tiered semiconductor devices are described, along with apparatus and systems that include them. In one such method, an opening is formed in a tier of semiconductor material and a tier of dielectric. A portion of the tier of semiconductor material exposed by the opening is processed so that the portion is doped differently than the remaining semiconductor material in the tier. At least substantially all of the remaining semiconductor material of the tier is removed, leaving the differently doped portion of the tier of semiconductor material as a charge storage structure. A tunneling dielectric is formed on a first surface of the charge storage structure and an intergate dielectric is formed on a second surface of the charge storage structure. Additional embodiments are also described.

A method includes depositing a multi-layer stack over a semiconductor substrate, the multi-layer stack including a plurality of sacrificial layers that alternate with a plurality of channel layers; forming a first recess in the multi-layer stack; forming first spacers on sidewalls of the sacrificial layers in the first recess; depositing a first semiconductor material in the first recess, where the first semiconductor material is undoped, where the first semiconductor material is in physical contact with a sidewall and a bottom surface of at least one of the first spacers; implanting dopants in the first semiconductor material, where after implanting dopants the first semiconductor material has a gradient-doped profile; and forming an epitaxial source/drain region in the first recess over the first semiconductor material, where a material of the epitaxial source/drain region is different from the first semiconductor material.

A method for fabricating of semiconductor device is provided, including providing a substrate. A first trench isolation and a second trench isolation are formed in the substrate. A portion of the substrate is etched to have a height between a top and a bottom of the first and second trench isolations. A germanium (Ge) doped layer region is formed in the portion of the substrate. A fluorine (F) doped layer region is formed in the portion of the substrate, lower than and overlapping with the germanium doped layer region. An oxidation process is performed on the portion of the substrate to form a gate oxide layer between the first and second trench isolations.

A method for fabricating of semiconductor device is provided, including providing a substrate. A first trench isolation and a second trench isolation are formed in the substrate. A portion of the substrate is etched to have a height between a top and a bottom of the first and second trench isolations. A germanium (Ge) doped layer region is formed in the portion of the substrate. A fluorine (F) doped layer region is formed in the portion of the substrate, lower than and overlapping with the germanium doped layer region. An oxidation process is performed on the portion of the substrate to form a gate oxide layer between the first and second trench isolations.

A SiC epitaxial wafer includes a SiC substrate and an epitaxial layer laminated on the SiC substrate, wherein the epitaxial layer contains an impurity element which determines the conductivity type of the epitaxial layer and boron which has a conductivity type different from the conductivity type of the impurity element, and the concentration of boron is less than 1.0×10.sup.14 cm.sup.−3 at any position in the plane of the epitaxial layer.