Abstract:
An apparatus, system and method for cleaning a substrate edge include a bristle brush unit that cleans bevel polymers deposited on substrate edges using frictional contact in the presence of cleaning chemistry. The bristle brush unit is made up of a plurality of outwardly extending vanes and is mounted on a rotating shaft. An abrasive material is distributed throughout and within the outwardly extending vanes of the bristle brush unit to provide the frictional contact. The bristle brush unit cleans the edge of the substrate by allowing frictional contact of the plurality of abrasive particles with the edge of the substrate in the presence of fluids, such as cleaning chemistry, to cut, rip and tear the bevel polymer from the edge of the substrate.
Abstract:
An interconnect structure is provided, including a layer of dielectric material having at least one opening and a first barrier layer on sidewalls defining the opening. A ruthenium-containing second barrier layer overlays the first barrier layer, the second barrier layer having a ruthenium zone, a ruthenium oxide zone, and a ruthenium-rich zone. The ruthenium zone is interposed between the first barrier layer and the ruthenium oxide zone. The ruthenium oxide zone is interposed between the ruthenium zone and the ruthenium-rich zone.
Abstract:
The embodiments provide processes and integrated systems that produce a metal-to-metal or a silicon-to-metal interface to enhance electro-migration performance, to provide lower metal resistivity, and to improve metal-to-metal or silicon-to-metal interfacial adhesion for copper interconnects. An exemplary method of preparing a substrate surface to selectively deposit a thin layer of a cobalt-alloy material on a copper surface of in an integrated system to improve electromigration performance of a copper interconnect is provided. The method includes removing contaminants and metal oxides from the substrate surface in the integrated system, and reconditioning the substrate surface using a reducing environment after removing contaminants and metal oxides in the integrated system. The method also includes selectively depositing the thin layer of cobalt-alloy material on the copper surface of the copper interconnect in the integrated system after reconditioning the substrate surface. System to practice the exemplary method described above are also provided.
Abstract:
The embodiments provide integrated apparatus and methods that perform substrate surface treatment and film deposition for copper interconnect with improved metal migration performance and reduced void propagation. In one exemplary embodiment, a chamber for performing surface treatment and film deposition is provided. The chamber includes a first proximity head for substrate surface treatment configured to dispense a first treatment gas to treat a portion of a surface of a substrate under the first proximity head for substrate surface treatment. The chamber also includes a first proximity head for atomic layer deposition (ALD) configured to sequentially dispensing a first reactant gas and a first purging gas to deposit a first ALD film under the second proximity head for ALD.
Abstract:
The embodiments provide processes and integrated systems that produce a metal-to-metal or a silicon-to-metal interface to enhance electro-migration performance, to provide lower metal resistivity, and to improve metal-to-metal or silicon-to-metal interfacial adhesion for copper interconnects. An exemplary method of preparing a substrate surface to selectively deposit a thin layer of a cobalt-alloy material on a copper surface of in an integrated system to improve electromigration performance of a copper interconnect is provided. The method includes removing contaminants and metal oxides from the substrate surface in the integrated system, and reconditioning the substrate surface using a reducing environment after removing contaminants and metal oxides in the integrated system. The method also includes selectively depositing the thin layer of cobalt-alloy material on the copper surface of the copper interconnect in the integrated system after reconditioning the substrate surface. System to practice the exemplary method described above are also provided.
Abstract:
The embodiments fill the need of improving electromigration and reducing stress-induced voids of copper interconnect by enabling deposition of a thin and conformal barrier layer, and a copper layer in the copper interconnect. The adhesion between the barrier layer and the copper layer can be improved by making the barrier layer metal-rich prior copper deposition and by limiting the amount of oxygen the barrier layer is exposed prior to copper deposition. Alternatively, a functionalization layer can be deposited over the barrier layer to enable the copper layer being deposit in the copper interconnect with good adhesion between the barrier layer and the copper layer. An exemplary method of preparing a substrate surface of a substrate to deposit a functionalization layer over a metallic barrier layer of a copper interconnect to assist deposition of a copper layer in the copper interconnect in an integrated system in order to improve electromigration performance of the copper interconnect is provided. The method includes depositing the metallic barrier layer to line the copper interconnect structure in the integrated system, wherein after depositing the metallic barrier layer, the substrate is transferred and processed in controlled environment to prevent the formation of metallic barrier oxide. The method also includes depositing the functionalization layer over the metallic layer in the integrated system. The method further includes depositing the copper layer in the copper interconnect structure in the integrated system after the functionalization layer is deposited over the metallic barrier layer.
Abstract:
The embodiments fill the need enabling deposition of a thin and conformal barrier layer, and a copper layer in the copper interconnect with good electro-migration performance and with reduced risk of stress-induce voiding of copper interconnect. Electromigration and stress-induced voiding are affected by the adhesion between the barrier layer and the copper layer. A functionalization layer is deposited over the barrier layer to enable the copper layer being deposit in the copper interconnect. The functionalization layer forms strong bonds with barrier layer and with copper to improve adhesion property between the two layers. An exemplary method of preparing a substrate surface of a substrate to deposit a functionalization layer over a metallic barrier layer of a copper interconnect to assist deposition of a copper layer in the copper interconnect in order to improve electromigration performance of the copper interconnect is provided. The method includes depositing the metallic barrier layer to line the copper interconnect structure in the integrated system, and oxidizing a surface of the metallic barrier layer. The method also includes depositing the functionalization layer over the oxidized surface of the metallic barrier layer, and depositing the copper layer in the copper interconnect structure after the funcationalization layer is deposited over the metallic barrier layer.
Abstract:
An apparatus generating a plasma for removing fluorinated polymer from a substrate is disclosed. The embodiment includes a powered electrode assembly, including a powered electrode, a first dielectric layer, and a first wire mesh disposed between the powered electrode and the first dielectric layer. The embodiment also includes a grounded electrode assembly disposed opposite the powered electrode assembly so as to form a cavity wherein the plasma is generated, the first wire mesh being shielded from the plasma by the first dielectric layer when the plasma is present in the cavity, the cavity having an outlet at one end for providing the plasma to remove the fluorinated polymer.
Abstract:
A plasma processing system including a plasma chamber for processing a substrate is disclosed. The apparatus includes a chuck configured for supporting a first surface of the substrate. The apparatus also includes a plasma resistant barrier disposed in a spaced-apart relationship with respect to a second surface of the substrate, the second surface being opposite the first surface, the plasma resistant barrier substantially shielding a center portion of the substrate and leaving an annular periphery area of the second surface of the substrate substantially unshielded by the plasma resistant barrier. The apparatus further includes at least one powered electrode, the powered electrode operating cooperatively with the plasma resistant barrier to generate confined plasma from a plasma gas, the confined plasma being substantially confined to the annular periphery portion of the substrate and away from the center portion of the substrate.
Abstract:
An apparatus generating a plasma for removing metal oxide from a substrate is disclosed. The embodiment includes a powered electrode assembly, including a powered electrode, a first dielectric layer, and a first wire mesh disposed between the powered electrode and the first dielectric layer. The embodiment also includes a grounded electrode assembly disposed opposite the powered electrode assembly so as to form a cavity wherein the plasma is generated, the first wire mesh being shielded from the plasma by the first dielectric layer when the plasma is present in the cavity, the cavity having an outlet at one end for providing the plasma to remove the metal oxide.