Abstract:
An electroless copper plating solution is disclosed herein. The solution includes an aqueous copper salt component, an aqueous cobalt salt component, a polyamine-based complexing agent, a chemical brightener component, a halide component, and a pH-modifying substance in an amount sufficient to make the electroless copper plating solution acidic. A method of preparing an electroless copper solution is also provided.
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.
Abstract:
A proximity head and associated method of use is provided for performing confined area planarization of a semiconductor wafer. The proximity head includes a chamber defined to maintain an electrolyte solution. A cathode is disposed within the chamber in exposure to the electrolyte solution. A cation exchange membrane is disposed over a lower opening of the chamber. A top surface of the cation exchange membrane is in direct exposure to the electrolyte solution to be maintained within the chamber. A fluid supply channel is defined to expel fluid at a location adjacent to a lower surface of the cation exchange membrane. A vacuum channel is defined to provide suction at a location adjacent to the lower surface of the cation exchange membrane, such that the fluid to be expelled from the fluid supply channel is made to flow over the lower surface of the cation exchange membrane.
Abstract:
A method for forming copper on a substrate including inputting a copper source solution into a mixer, inputting a reducing solution into the mixer, mixing copper source solution and the reducing solution to form a plating solution having a pH of greater than about 6.5 and applying the plating solution to a substrate, the substrate including a catalytic layer wherein applying the plating solution to the substrate includes forming a catalytic layer, maintaining the catalytic layer in a controlled environment and forming copper on the catalytic layer. A system for forming copper structures is also disclosed.
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:
An electroless plating chamber is provided. The electroless plating chamber includes a chuck configured to support a substrate and a bowl surrounding a base and a sidewall of the chuck. The base has an annular channel defined along an inner diameter of the base. The chamber includes a drain connected to the annular channel. The drain is capable of removing fluid collected from the chuck. A proximity head capable of cleaning and substantially drying the substrate is included in the chamber. A method for performing an electroless plating operation is also provided.
Abstract:
PROBLEM TO BE SOLVED: To provide an electroplating head giving a uniform current distribution to the whole of a wafer and giving a uniform plating thickness, and to provide a method for operating the same. SOLUTION: An electroplating head 100 is disposed in the upper part of a wafer 307. The head includes a main chamber 105, anode chambers 105A, 105B, anodes 115A, 115B arranged at the anode chambers, a fluid entrance 111, a fluid exit 112, and a porous resistive material 119 disposed at the fluid exit. The main chamber is separated from the anode chambers by membranes 109A, 109B penetrating anions. COPYRIGHT: (C)2006,JPO&NCIPI
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:
A cluster architecture including a lab-ambient controlled transfer module that is coupled to one or more wet substrate processing modules The lab-ambient controlled transfer module and the one or more wet substrate processing modules manage a first ambient environment having a vacuum transfer module coupled to the lab-ambient controlled transfer module and one or more plasma processing modules The vacuum transfer module and the one or more plasma processing modules manage a second ambient environment A controlled ambient transfer module coupled to the vacuum transfer module and one or more ambient processing modules manage a third ambient environment The cluster architecture therefore enables controlled processing of the substrate in eith the first, second or third ambient environments, as well as dupng associated transitions The embodiments also provide for efficient methods for filling a trench of a substrate
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.