摘要:
Methods for forming a contact metal layer in a contact structure in semiconductor devices are provided in the present invention. In one embodiment, a method for depositing a contact metal layer for forming a contact structure in a semiconductor device includes pulsing a deposition precursor gas mixture to a surface of a substrate disposed in a metal deposition processing chamber, pulsing a purge gas mixture to an edge of the substrate, wherein the purge gas mixture includes at least a hydrogen containing gas and an inert gas, and forming a contact metal layer on the substrate from the first deposition precursor gas mixture.
摘要:
Embodiments of the invention provide apparatuses and methods for atomic layer deposition (ALD), such as plasma-enhanced ALD (PE-ALD). In some embodiments, a PE-ALD chamber is provided which includes a chamber lid assembly coupled with a chamber body having a substrate support therein. In one embodiment, the chamber lid assembly has an inlet manifold assembly containing an annular channel encompassing a centralized channel, wherein the centralized channel extends through the inlet manifold assembly, and the inlet manifold assembly further contains injection holes extending from the annular channel, through a sidewall of the centralized channel, and to the centralized channel. The chamber lid assembly further contains a showerhead assembly disposed below the inlet manifold assembly, a water box disposed between the inlet manifold assembly and the showerhead assembly, and a remote plasma system (RPS) disposed above and coupled with the inlet manifold assembly, and in fluid communication with the centralized channel.
摘要:
Embodiments of the invention provide apparatuses and methods for atomic layer deposition (ALD), such as plasma-enhanced ALD (PE-ALD). In some embodiments, a PE-ALD chamber is provided which includes a chamber lid assembly coupled with a chamber body having a substrate support therein. In one embodiment, the chamber lid assembly has an inlet manifold assembly containing an annular channel encompassing a centralized channel, wherein the centralized channel extends through the inlet manifold assembly, and the inlet manifold assembly further contains injection holes extending from the annular channel, through a sidewall of the centralized channel, and to the centralized channel. The chamber lid assembly further contains a showerhead assembly disposed below the inlet manifold assembly, a water box disposed between the inlet manifold assembly and the showerhead assembly, and a remote plasma system (RPS) disposed above and coupled with the inlet manifold assembly, and in fluid communication with the centralized channel.
摘要:
Methods for forming barrier/seed layers for interconnect structures are provided herein. In some embodiments, a method of processing a substrate having an opening formed in a first surface of the substrate, the opening having a sidewall and a bottom surface, the method may include forming a layer comprising manganese (Mn) and at least one of ruthenium (Ru) or cobalt (Co) on the sidewall and the bottom surface of the opening, the layer having a first surface adjacent to the sidewall and bottom surface of the opening and a second surface opposite the first surface, wherein the second surface comprises predominantly at least one of ruthenium (Ru) or cobalt (Co) and wherein a predominant quantity of manganese (Mn) in the layer is not disposed proximate the second surface; and depositing a conductive material on the layer to fill the opening.
摘要:
Embodiments herein provide methods for forming an aluminum contact on a cobalt silicide junction. In one embodiment, a method for forming materials on a substrate is provided which includes forming a cobalt silicide layer on a silicon-containing surface of the substrate during a silicidation process, forming a fluorinated sublimation film on the cobalt silicide layer during a plasma process, heating the substrate to a sublimation temperature to remove the fluorinated sublimation film, depositing a titanium-containing nucleation layer over the cobalt silicide layer, and depositing an aluminum-containing material over the titanium-containing nucleation layer. In one example, the method further provides forming the cobalt silicide layer by depositing a cobalt-containing layer on the silicon-containing surface, heating the substrate during a rapid thermal annealing (RTA) process, etching away any remaining portions of the cobalt-containing layer from the substrate, and subsequently heating the substrate during another RTA process.
摘要:
Embodiments provide a method for depositing or forming titanium aluminum nitride materials during a vapor deposition process, such as atomic layer deposition (ALD) or plasma-enhanced ALD (PE-ALD). In some embodiments, a titanium aluminum nitride material is formed by sequentially exposing a substrate to a titanium precursor and a nitrogen plasma to form a titanium nitride layer, exposing the titanium nitride layer to a plasma treatment process, and exposing the titanium nitride layer to an aluminum precursor while depositing an aluminum layer thereon. The process may be repeated multiple times to deposit a plurality of titanium nitride and aluminum layers. Subsequently, the substrate may be annealed to form the titanium aluminum nitride material from the plurality of layers. In other embodiments, the titanium aluminum nitride material may be formed by sequentially exposing the substrate to the nitrogen plasma and a deposition gas which contains the titanium and aluminum precursors.
摘要:
Embodiments herein provide methods for forming an aluminum contact on a cobalt silicide junction. In one embodiment, a method for forming materials on a substrate is provided which includes forming a cobalt silicide layer on a silicon-containing surface of the substrate during a silicidation process, forming a fluorinated sublimation film on the cobalt silicide layer during a plasma process, heating the substrate to a sublimation temperature to remove the fluorinated sublimation film, depositing a titanium-containing nucleation layer over the cobalt silicide layer, and depositing an aluminum-containing material over the titanium-containing nucleation layer. In one example, the method further provides forming the cobalt silicide layer by depositing a cobalt-containing layer on the silicon-containing surface, heating the substrate during a rapid thermal annealing (RTA) process, etching away any remaining portions of the cobalt-containing layer from the substrate, and subsequently heating the substrate during another RTA process.
摘要:
Embodiments of the invention described herein generally provide methods for forming cobalt silicide layers and metallic cobalt layers by using various deposition processes and annealing processes. In one embodiment, a method for forming a metallic silicide containing material on a substrate is provided which includes forming a metallic silicide material over a silicon-containing surface during a vapor deposition process by sequentially depositing a plurality of metallic silicide layers and silyl layers on the substrate, depositing a metallic capping layer over the metallic silicide material, heating the substrate during an annealing process, and depositing a metallic contact material over the barrier material. In one example, the metallic silicide layers and the metallic capping layer both contain cobalt. The cobalt silicide material may contain a silicon/cobalt atomic ratio of about 1.9 or greater, such as greater than about 2.0, or about 2.2 or greater.
摘要:
Embodiments as described herein provide a method for depositing barrier layers and tungsten materials on substrates. In one embodiment, a method for depositing materials is provided which includes forming a barrier layer on a substrate, wherein the barrier layer contains a cobalt silicide layer and a metallic cobalt layer, exposing the barrier layer to a soak gas containing a reducing gas during a soak process, and forming a tungsten material over the barrier layer. In one example, the barrier layer may be formed by depositing a cobalt-containing material on a dielectric surface of the substrate and annealing the substrate to form the cobalt silicide layer from a lower portion of the cobalt-containing material and the metallic cobalt layer from an upper portion of the cobalt-containing material.
摘要:
Embodiments are provided for a method to deposit barrier and tungsten materials on a substrate. In one embodiment, a method provides forming a barrier layer on a substrate and exposing the substrate to a silane gas to form a thin silicon-containing layer on the barrier layer during a soak process. The method further provides depositing a tungsten nucleation layer over the barrier layer and the thin silicon-containing layer during an atomic layer deposition process and depositing a tungsten bulk layer on the tungsten nucleation layer during a chemical vapor deposition process. In some examples, the barrier layer contains metallic cobalt and cobalt silicide, or metallic nickel and nickel silicide. In other examples, the barrier layer contains metallic titanium and titanium nitride, or metallic tantalum and tantalum nitride.