Abstract:
Magnet assemblies comprising a housing with a top plate each comprising aligned openings are described. The housing has a bottom ring and an annular wall with a plurality of openings formed in the bottom ring. The top plate is on the housing and has a plurality of openings aligned with the plurality of openings in the bottom ring of the housing. The magnet assembly may also include a non-conducting base plate and/or a conductive cover plate. Methods for using the magnet assembly and magnetic field tuning are also described.
Abstract:
Methods and apparatus for controlling the ion fraction in physical vapor deposition processes are disclosed. In some embodiments, a process chamber for processing a substrate having a given diameter includes: an interior volume and a target to be sputtered, the interior volume including a central portion and a peripheral portion; a rotatable magnetron above the target to form an annular plasma in the peripheral portion; a substrate support disposed in the interior volume to support a substrate having the given diameter; a first set of magnets disposed about the body to form substantially vertical magnetic field lines in the peripheral portion; a second set of magnets disposed about the body and above the substrate support to form magnetic field lines directed toward a center of the support surface; a first power source to electrically bias the target; and a second power source to electrically bias the substrate support.
Abstract:
Atomic layer deposition (ALD) processes are combined with physical vapor deposition (PVD) processes in a low pressure environment to produce a high quality barrier film. The initial barrier film is deposited on a substrate using ALD processes and then moved to a PVD chamber to treat the barrier film to increase the barrier film's density and purity, decreasing the barrier film's resistivity. A dual source of materials is sputtered onto the substrate to provide doping while a gas is simultaneously used to etch the substrate to release nitrogen. At least one source of material is positioned to provide doping at an acute angle to the surface of the substrate while supplied with DC power and RF power at a first RF power frequency. The substrate is biased using RF power at a second RF power frequency.
Abstract:
Embodiments of improved methods and apparatus for maintaining low non-uniformity over the course of the life of a target are provided herein. In some embodiments, a method of processing a substrate in a physical vapor deposition chamber includes: disposing a substrate atop a substrate support having a cover ring that surrounds the substrate support such that an upper surface of the substrate is positioned at a first distance above an upper surface of the cover ring; sputtering a source material from a target disposed opposite the substrate support to deposit a film atop the substrate while maintaining the first distance; and lowering the substrate support with respect to the cover ring and sputtering the source material from the target to deposit films atop subsequent substrates over a life of the target.
Abstract:
Methods for depositing a layer on a substrate are provided herein. In some embodiments, a method of depositing a metal-containing layer on a substrate in a physical vapor deposition (PVD) chamber may include applying RF power at a VHF frequency to a target comprising a metal disposed in the PVD chamber above the substrate to form a plasma from a plasma-forming gas; optionally applying DC power to the target; sputtering metal atoms from the target using the plasma while maintaining a first pressure in the PVD chamber sufficient to ionize a predominant portion of the sputtered metal atoms; and controlling the potential on the substrate to be the same polarity as the ionized metal atoms to deposit a metal-containing layer on the substrate.
Abstract:
A shield encircles a sputtering target that faces a substrate support in a substrate processing chamber. The shield comprises an outer band having a diameter sized to encircle the sputtering target, the outer band having upper and bottom ends, and the upper end having a tapered surface extending radially outwardly and adjacent to the sputtering target. A base plate extends radially inward from the bottom end of the outer band. An inner band joined to the base plate at least partially surrounds a peripheral edge of a substrate support. The shield can also have a heat exchanger comprising a conduit with an inlet and outlet to flow heat exchange fluid therethrough.
Abstract:
Magnet assemblies comprising a housing with a top plate each comprising aligned openings are described. The housing has a bottom ring and an annular wall with a plurality of openings formed in the bottom ring. The top plate is on the housing and has a plurality of openings aligned with the plurality of openings in the bottom ring of the housing. The magnet assembly may also include a non-conducting base plate and/or a conductive cover plate. Methods for using the magnet assembly and magnetic field tuning are also described.
Abstract:
Methods and systems for reducing substrate particle scratching using machine learning are provided. A machine learning model is trained to predict process recipe settings for a substrate temperature control process to be performed for a current substrate at a manufacturing system. First training data and second training data are generated for the machine learning model. The first training data includes historical data associated with prior process recipe settings for a prior substrate temperature control process performed for a prior substrate at a prior process chamber. The second training data is associated with a historical scratch profile of one or more surfaces of the prior substrate after performance of the prior substrate temperature control process according to the prior process recipe settings. The first training data and the second training data are provided to train the machine learning model to predict which process recipe settings for the substrate temperature control process to be performed for the current substrate correspond to a target scratch profile for one or more surfaces of the current substrate.
Abstract:
Physical vapor deposition methods for reducing the particulates deposited on the substrate are disclosed. The pressure during sputtering can be increased to cause agglomeration of the particulates formed in the plasma. The agglomerated particulates can be moved to an outer portion of the process chamber prior to extinguishing the plasma so that the agglomerates fall harmlessly outside of the diameter of the substrate.