Abstract: Embodiments of the invention are directed to a method and resulting structures for a semiconductor device having self-aligned contacts. In a non-limiting embodiment of the invention, a semiconductor fin is formed vertically extending from a bottom source/drain region of a substrate. A conductive gate is formed over a channel region of the semiconductor fin. A top source/drain region is formed on a surface of the semiconductor fin and a top metallization layer is formed on the top source/drain region. A dielectric cap is formed over the top metallization layer.

Abstract: A method for fabricating a semiconductor device includes forming at least one contact trench corresponding to at least one bottom contact area associated with at least one vertical transistor, laterally etching through the at least one contact trench to form at least one bottom contact region corresponding to the at least one bottom contact area, and filling the at least one bottom contact region with a conductive material to form at least one bottom contact.

Abstract: Various methods and structures for fabricating a semiconductor structure. The semiconductor structure includes in a top layer of a semiconductor stack a semiconductor contact located according to a first horizontal pitch. A first metallization layer is disposed directly on the top layer and includes a metallization contact located according to a second horizontal pitch, the second horizontal pitch being different from the first horizontal pitch such that the location of the metallization contact is vertically mismatched from the location of the semiconductor contact. A second metallization layer is disposed directly on the first metallization layer. The second metallization layer includes a super viabar structure that forms an electrical interconnect, in the second metallization layer, between the semiconductor contact in the top layer of the semiconductor stack and the metallization contact in the first metallization layer.

Abstract: Semiconductor structures fabricated via extreme ultraviolet (EUV) lithographic patterning techniques implementing directional deposition on a EUV resist mask improves selectivity and critical dimension control during the patterning of features in multiple layers of the semiconductor substrate. A semiconductor structure includes a substrate structure having an extreme ultraviolet resist mask disposed over one or more additional layers of the substrate structure. The extreme ultraviolet resist mask defines patterning features. A hard mask layer including a hard mask material is disposed on the extreme ultraviolet resist mask and covers the patterning features of the extreme ultraviolet resist mask.

Abstract: Extreme ultraviolet (EUV) lithographic patterning methods are provided which implement directional deposition on the EUV resist mask to improve selectivity and critical dimension control during the patterning of features in multiple layers. A hard mask material is deposited on a substrate structure using directional deposition. The hard mask material forms a hard mask layer that covers patterning features of an EUV resist mask of the substrate structure. The hard mask material is etched selective to a layer underlying the EUV resist mask to remove portions of the hard mask material that were deposited on the underlying layer during the directional deposition without uncovering the patterning features of the EUV resist mask. At least one layer of the substrate structure is patterned based on the EUV resist mask and the hard mask layer.

Abstract: Embodiments of the invention are directed to an interconnect stack including a first dielectric layer, a first trench formed in the first dielectric layer, and a first liner deposited in the first trench, wherein the first liner defines a second trench. A first conductive material is in the second trench and deposited over the first dielectric layer and the first conductive material. A third trench extends through the second dielectric layer and is over the first conductive material. A bottom surface of the third trench includes at least a portion of the top surface of the first conductive material. A second liner is in the third trench, on sidewalls of the third trench, and also on the portion of the top surface of the first conductive material. The second liner functions as a cap region configured to counter electro-migration or surface migration of the first conductive material.

Abstract: Embodiments of the invention are directed to an interconnect stack including a first dielectric layer, a first trench formed in the first dielectric layer, and a first liner deposited in the first trench, wherein the first liner defines a second trench. A first conductive material is in the second trench and deposited over the first dielectric layer and the first conductive material. A third trench extends through the second dielectric layer and is over the first conductive material. A bottom surface of the third trench includes at least a portion of the top surface of the first conductive material. A second liner is in the third trench, on sidewalls of the third trench, and also on the portion of the top surface of the first conductive material. The second liner functions as a cap region configured to counter electro-migration or surface migration of the first conductive material.

Abstract: A semiconductor includes a semiconductor substrate having a bottom source/drain region and a vertical semiconductor fin having a bottom end that contacts the semiconductor substrate. The semiconductor device further includes a top source/drain region on a top end of the vertical semiconductor. The top source/drain region is separated from the semiconductor substrate by the vertical semiconductor fin. The semiconductor device further includes an electrically conductive cap on an outer surface of the top source/drain region.

Abstract: Embodiments of the invention are directed to a method and resulting structures for a semiconductor device having self-aligned contacts. In a non-limiting embodiment of the invention, a semiconductor fin is formed vertically extending from a bottom source/drain region of a substrate. A conductive gate is formed over a channel region of the semiconductor fin. A top source/drain region is formed on a surface of the semiconductor fin and a top metallization layer is formed on the top source/drain region. A dielectric cap is formed over the top metallization layer.

Abstract: A method of forming stacked fin field effect devices is provided. The method includes forming a layer stack on a substrate, wherein the layer stack includes a first semiconductor layer on a surface of the substrate, a second semiconductor layer on the first semiconductor layer, a third semiconductor layer on the second semiconductor layer, a separation layer on the third semiconductor layer, a fourth semiconductor layer on the separation layer, a fifth semiconductor layer on the fourth semiconductor layer, and a sixth semiconductor layer on the fifth semiconductor layer. The method further includes forming a plurality of channels through the layer stack to the surface of the substrate, and removing portions of the second semiconductor layer and fifth semiconductor layer to form lateral grooves.

Abstract: A method of forming stacked fin field effect devices is provided. The method includes forming a layer stack on a substrate, wherein the layer stack includes a first semiconductor layer on a surface of the substrate, a second semiconductor layer on the first semiconductor layer, a third semiconductor layer on the second semiconductor layer, a separation layer on the third semiconductor layer, a fourth semiconductor layer on the separation layer, a fifth semiconductor layer on the fourth semiconductor layer, and a sixth semiconductor layer on the fifth semiconductor layer. The method further includes forming a plurality of channels through the layer stack to the surface of the substrate, and removing portions of the second semiconductor layer and fifth semiconductor layer to form lateral grooves.

Abstract: A gate tie-down structure includes a gate structure including a gate conductor and gate spacers and inner spacers formed on the gate spacers. Trench contacts are formed on sides of the gate structure. An interlevel dielectric (ILD) has a thickness formed over the gate structure. A horizontal connection is formed within the thickness of the ILD over an active area connecting the gate conductor and one of the trench contacts over one of the inner spacers.

Abstract: A vertical FinFET includes a semiconductor fin formed over a semiconductor substrate. A self-aligned first source/drain contact is electrically separated from a second source/drain contact by a sidewall spacer that is formed over an endwall of the fin. The sidewall spacer, which comprises a dielectric material, allows the self-aligned first source/drain contact to be located in close proximity to an endwall of the fin and the associated second source/drain contact without risk of an electrical short between the adjacent contacts.

Abstract: A gate tie-down structure includes a gate structure including a gate conductor and gate spacers and inner spacers formed on the gate spacers. Trench contacts are formed on sides of the gate structure. An interlevel dielectric (ILD) has a thickness formed over the gate structure. A horizontal connection is formed within the thickness of the ILD over an active area connecting the gate conductor and one of the trench contacts over one of the inner spacers.

Abstract: Embodiments are directed to a method and resulting structures for a vertical field effect transistor (VFET) having an embedded bottom metal contact. A semiconductor fin is formed on a doped region of a substrate. A portion of the doped region adjacent to the semiconductor fin is recessed and an embedded contact is formed on the recessed portion. A material of the conductive rail is selected such that a conductivity of the embedded contact is higher than a conductivity of the doped region.

Abstract: A method of forming stacked fin field effect devices is provided. The method includes forming a layer stack on a substrate, wherein the layer stack includes a first semiconductor layer on a surface of the substrate, a second semiconductor layer on the first semiconductor layer, a third semiconductor layer on the second semiconductor layer, a separation layer on the third semiconductor layer, a fourth semiconductor layer on the separation layer, a fifth semiconductor layer on the fourth semiconductor layer, and a sixth semiconductor layer on the fifth semiconductor layer. The method further includes forming a plurality of channels through the layer stack to the surface of the substrate, and removing portions of the second semiconductor layer and fifth semiconductor layer to form lateral grooves.

Abstract: A method of forming stacked fin field effect devices is provided. The method includes forming a layer stack on a substrate, wherein the layer stack includes a first semiconductor layer on a surface of the substrate, a second semiconductor layer on the first semiconductor layer, a third semiconductor layer on the second semiconductor layer, a separation layer on the third semiconductor layer, a fourth semiconductor layer on the separation layer, a fifth semiconductor layer on the fourth semiconductor layer, and a sixth semiconductor layer on the fifth semiconductor layer. The method further includes forming a plurality of channels through the layer stack to the surface of the substrate, and removing portions of the second semiconductor layer and fifth semiconductor layer to form lateral grooves.

Abstract: A method of forming stacked vertical field effect devices is provided. The method includes forming a layer stack on a substrate, wherein the layer stack includes a first spacer layer on the substrate, a first protective liner on the first spacer layer, a first gap layer on the first protective liner, a second protective liner on the first gap layer, a second spacer layer on the second protective liner, a sacrificial layer on the second spacer layer, a third spacer layer on the sacrificial layer, a third protective liner on the third spacer layer, a second gap layer on the third protective liner, a fourth protective liner on the second gap layer, and a fourth spacer layer on the fourth protective liner. The method further includes forming channels through the layer stack, a liner layer on the sidewalls of the channels, and a vertical pillar in the channels.

Abstract: A local interconnect structure includes a substrate having a dielectric layer and at least one semiconductor contact structure embedded in the dielectric layer. An electrically conductive material is deposited in a non-eroded contact trench that defines at least one electrically conducive contact via. The contact via extends from a first end that is flush with an upper surface of the dielectric layer to a second end that contacts the at one semiconductor contact structure. A local conductive material layer is formed in the dielectric layer and contacts the first end of the contact via. The non-eroded contact trench includes sharp upper corners formed at approximately ninety degrees with respect to the first end of the contact via.

Abstract: A vertical FinFET includes a semiconductor fin formed over a semiconductor substrate. A self-aligned first source/drain contact is electrically separated from a second source/drain contact by a sidewall spacer that is formed over an endwall of the fin. The sidewall spacer, which comprises a dielectric material, allows the self-aligned first source/drain contact to be located in close proximity to an endwall of the fin and the associated second source/drain contact without risk of an electrical short between the adjacent contacts.