Abstract:
The embodiments provide apparatus and methods for removal of etch byproducts, dielectric films and metal films near the substrate bevel edge, and chamber interior to avoid the accumulation of polymer byproduct and deposited films and to improve process yield. In an exemplary embodiment, a plasma processing chamber configured to clean a bevel edge of a substrate is provided. The plasma processing chamber includes a substrate support configured to receive the substrate. The plasma processing chamber also includes a bottom edge electrode surrounding the substrate support. The bottom edge electrode and the substrate support are electrically isolated from one another by a bottom dielectric ring. A surface of the bottom edge electrode facing the substrate is covered by a bottom thin dielectric layer. The plasma processing chamber further includes a top edge electrode surrounding a top insulator plate opposing the substrate support. The top edge electrode is electrically grounded. A surface of the top edge electrode facing the substrate is covered by a top thin dielectric layer. The top edge electrode and the bottom edge electrode oppose one another and are configured to generate a cleaning plasma to clean the bevel edge of the substrate.
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 various embodiments provide apparatus and methods of removal of unwanted deposits near the bevel edge of substrates to improve process yield. The embodiments provide apparatus and methods with center and edge gas feeds as additional process knobs for selecting a most suitable bevel edge etching processes to push the edge exclusion zone further outward towards the edge of substrates. Further the embodiments provide apparatus and methods with tuning gas(es) to change the etching profile at the bevel edge and using a combination of center and edge gas feeds to flow process and tuning gases into the chamber. Both the usage of tuning gas and location of gas feed(s) affect the etching characteristics at bevel edge. Total gas flow, gap distance between the gas delivery plate and substrate surface, pressure, and types of process gas(es) are also found to affect bevel edge etching profiles.
Abstract:
The embodiments of the present invention provide methods for cleaning patterned substrates with fine features. The methods for cleaning patterned substrate have advantages in cleaning patterned substrates with fine features without substantially damaging the features by using the cleaning materials described. The cleaning materials are fluid, either in liquid phase, or in liquid/gas phase, and deform around device features; therefore, the cleaning materials do not substantially damage the device features or reduce damage all together. The cleaning materials containing polymers of a polymeric compound with large molecular weight capture the contaminants on the substrate. In addition, the cleaning materials entrap the contaminants and do not return the contaminants to the substrate surface. The polymers of one or more polymeric compounds with large molecular weight form long polymer chains, which can also be cross-linked to form a network (or polymeric network). The long polymer chains and/or polymer network show superior capabilities of capturing and entrapping contaminants, in comparison to conventional cleaning materials.
Abstract:
The embodiments provide structures and mechanisms for removal of etch byproducts, dielectric films and metal films on and near the substrate bevel edge, and chamber interior to avoid the accumulation of polymer byproduct and deposited films and to improve process yield. In an exemplary embodiment, a plasma processing chamber configured to clean a bevel edge of a substrate is provided. The plasma processing chamber includes a bottom electrode configured to receive the substrate, wherein the bottom electrode is coupled to a radio frequency (RF) power supply. The plasma processing chamber also includes a top edge electrode surrounding an insulating plate opposing the bottom electrode. The top edge electrode is electrically grounded. The plasma processing chamber further includes a bottom edge electrode surrounding the bottom electrode. The bottom edge electrode opposes the top edge electrode. The top edge electrode, the substrate disposed on the bottom electrode, and the bottom edge electrode are configured to generate a cleaning plasma to clean the bevel edge of the substrate. The bottom edge electrode and the bottom electrode are electrically coupled to one another through an RF circuit tunable to adjust the amount of RF current going between the substrate disposed on the bottom electrode, the bottom edge electrode and the top edge electrode.
Abstract:
Broadly speaking, the embodiments of the present invention fill the need by providing in-situ wafer temperature measuring method and apparatus. The in-situ substrate temperature measuring method and apparatus provide instant wafer temperature information to allow for continuous monitoring of the etching process. The method and apparatus also allow for instant substrate temperature control to tighten wafer-to-wafer and chamber-to- chamber process distribution. An exemplary cluster tool system is provided. The cluster tool system includes a substrate holding station for holding a substrate capable of emitting signals indicative of substrate temperature, and a processing chamber, the processing chamber being configured to receive the substrate from the substrate holding station and to run.through an active process operation when the substrate is in the processing chamber. The cluster tool system also includes a signal detector for detecting the signals emitted by the substrate when the processing chamber runs through the active process operation, the signal detector being configured to collect the emitted signals indicative of the substrate temperature.
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:
Broadly speaking, the embodiments of the present invention provides an improved plasma processing mechanism, apparatus, and method to increase the process uniformity at the very edge of the substrate. In an exemplary embodiment, a plasma processing chamber is provided. The plasma processing chamber includes a substrate support configured to receive a substrate. The plasma processing chamber also includes an annular ring having a plurality of gas channels defined therein. The annular ring is proximate to an outer edge of the substrate support and the annular ring is coupled to the substrate support. The plurality of gas channels is connected to an edge gas plenum surrounding the substrate support. The edge gas plenum is connected to a central gas plenum disposed within and near the center of the substrate support through a plurality of gas supply channels.
Abstract:
Broadly speaking, the embodiments of the present invention provide an improved chamber cleaning mechanism, apparatus and method. The present invention can also be used to provide additional knobs to tune the etch processes. In one embodiment, a plasma processing chamber configured to generate a plasma includes a bottom electrode assembly with an inner bottom electrode and an outer bottom electrode disposed outside of the inner bottom electrode, wherein the inner bottom electrode is configured to receive a substrate. The plasma processing chamber also includes a top electrode assembly with a top electrode, wherein the top capacitive electrode is disposed directly above the inner and outer bottom electrodes.
Abstract:
Cleaning compounds, apparatus, and methods to remove contaminants from a substrate surface are provided. An exemplary cleaning compound to remove particulate contaminants from a semiconductor substrate surface is provided. The cleaning compound includes a viscous liquid with a viscosity between about 1 cP to about 10,000 cP. The cleaning compound also includes a plurality of solid components dispersed in the viscous liquid, the plurality of. solid components interact with the particulate contaminants on the substrate surface to remove the particulate contaminants from the substrate surface.