C23C14/354

Magnetically Enhanced High Density Plasma-Chemical Vapor Deposition Plasma Source For Depositing Diamond and Diamond-Like Films
20210115553 · 2021-04-22 · ·

A method of sputtering a layer on a substrate using a high-energy density plasma (HEDP) magnetron includes positioning the magnetron in a vacuum with an anode, cathode target, magnet assembly, substrate, and feed gas; applying unipolar negative direct current (DC) voltage pulses from a pulse power supply with a pulse forming network (PFN) to a pulse converting network (PCN); and adjusting an amplitude and frequency associated with the plurality of unipolar negative DC voltage pulses causing a resonance mode associated with the PCN. The PCN converts the unipolar negative DC voltage pulses to an asymmetric alternating current (AC) signal that generates a high-density plasma discharge on the HEDP magnetron. An increase in amplitude or pulse duration of the plurality of unipolar negative DC voltage pulses causes an increase in the amplitude of a negative voltage of the asymmetric AC signal in response to the PCN being in the resonance mode, thereby causing sputtering discharge associated with the HEDP magnetron to form the layer from the cathode target on the substrate. A corresponding apparatus and computer-readable medium are disclosed.

Magnetically Enhanced Low Temperature-High Density Plasma-Chemical Vapor Deposition Plasma Source For Depositing Diamond and Diamond-Like Films
20210102284 · 2021-04-08 · ·

A magnetically enhanced low temperature high density plasma chemical vapor deposition (LT-HDP-CVD) source has a hollow cathode target and an anode, which form a gap. A cathode target magnet assembly forms magnetic field lines substantially perpendicular to the cathode surface. A gap magnet assembly forms a magnetic field in the gap that is coupled with the cathode target magnetic field. The magnetic field lines cross the pole piece electrode positioned in the gap. The pole piece is isolated from ground and can be connected to a voltage power supply. The pole piece can have negative, positive, floating, or RF electrical potentials. By controlling the duration, value, and sign of the electric potential on the pole piece, plasma ionization can be controlled. Feed gas flows through the gap between the hollow cathode and anode. The cathode can be connected to a pulse power or RF power supply, or cathode can be connected to both power supplies. The cathode target and substrate can be inductively grounded.

Magnetically enhanced high density plasma-chemical vapor deposition plasma source for depositing diamond and diamond-like films
10913998 · 2021-02-09 · ·

A magnetically enhanced HDP-CVD plasma source includes a hollow cathode target and an anode. The anode and cathode form a gap. A cathode target magnet assembly forms magnetic field lines that are substantially perpendicular to a cathode target surface. The gap magnet assembly forms a cusp magnetic field in the gap that is coupled with the cathode target magnetic field. The magnetic field lines cross a pole piece electrode positioned in the gap. This pole piece is isolated from ground and can be connected with a voltage power supply. The pole piece can have a negative, positive, or floating electric potential. The plasma source can be configured to generate volume discharge. The gap size prohibits generation of plasma discharge in the gap. By controlling the duration, value and a sign of the electric potential on the pole piece, the plasma ionization can be controlled. The magnetically enhanced HDP-CVD source can also be used for chemically enhanced ionized physical vapor deposition (CE-IPVD). Gas flows through the gap between hollow cathode and anode. The cathode target is inductively grounded, and the substrate is periodically inductively grounded.

Magnetically enhanced high density plasma-chemical vapor deposition plasma source for depositing diamond and diamond-like films
10957519 · 2021-03-23 · ·

A magnetically enhanced HDP-CVD plasma source includes a hollow cathode target and an anode. The anode and cathode form a gap. A cathode target magnet assembly forms magnetic field lines that are substantially perpendicular to a cathode target surface. The gap magnet assembly forms a cusp magnetic field in the gap that is coupled with the cathode target magnetic field. The magnetic field lines cross a pole piece electrode positioned in the gap. This pole piece is isolated from ground and can be connected with a voltage power supply. The pole piece can have a negative, positive, or floating electric potential. The plasma source can be configured to generate volume discharge. The gap size prohibits generation of plasma discharge in the gap. By controlling the duration, value and a sign of the electric potential on the pole piece, the plasma ionization can be controlled. The magnetically enhanced HDP-CVD source can also be used for chemically enhanced ionized physical vapor deposition (CE-IPVD). Gas flows through the gap between hollow cathode and anode. The cathode target is inductively grounded, and the substrate is periodically inductively grounded.

Apparatus and method for performing sputtering process

An apparatus for performing a sputtering process on a substrate is provided. The apparatus includes a processing chamber having a substrate support on which the substrate is placed, a target for emitting target particles to be adhered to the substrate by plasma formed in the processing chamber, a magnet, provided on a rear surface of the target, for adjusting a state of the plasma on the surface of the target, and a magnet moving mechanism for repeatedly moving the magnet between a position on one side and a position on the other side set across a center portion on the rear surface of the target. The apparatus further includes a collimator having two regulating plates for limiting an incident angle of the target particles to the substrate, and an arrangement position adjustment mechanism adjusting positions of the two regulating plates according to the movement of the magnet.

System and method for particle control in MRAM processing

A system and method for reducing particle contamination on substrates during a deposition process using a particle control system is disclosed here. In one embodiment, a film deposition system includes: a processing chamber sealable to create a pressurized environment and configured to contain a plasma, a target and a substrate in the pressurized environment; and a particle control unit, wherein the particle control unit is configured to provide an external force to each of at least one charged atom and at least one contamination particle in the plasma, wherein the at least one charged atom and the at last one contamination particle are generated by the target when it is in direct contact with the plasma, wherein the external force is configured to direct the at least one charged atom to a top surface of the substrate and to direct the at least one contamination particle away from the top surface of the substrate.

Magnetically enhanced low temperature-high density plasma-chemical vapor deposition plasma source for depositing diamond and diamond like films
10900118 · 2021-01-26 · ·

A magnetically enhanced low temperature high density plasma chemical vapor deposition (LT-HDP-CVD) source has a hollow cathode target and an anode, which form a gap. A cathode target magnet assembly forms magnetic field lines substantially perpendicular to the cathode surface. A gap magnet assembly forms a magnetic field in the gap that is coupled with the cathode target magnetic field. The magnetic field lines cross the pole piece electrode positioned in the gap. The pole piece is isolated from ground and can be connected to a voltage power supply. The pole piece can have negative, positive, floating, or RF electrical potentials. By controlling the duration, value, and sign of the electric potential on the pole piece, plasma ionization can be controlled. Feed gas flows through the gap between the hollow cathode and anode. The cathode can be connected to a pulse power or RF power supply, or cathode can be connected to both power supplies. The cathode target and substrate can be inductively grounded.

EM SOURCE FOR ENHANCED PLASMA CONTROL

Apparatus and methods for controlling plasma profiles during PVD deposition processes are disclosed. Some embodiments utilize EM coils placed above the target to control the plasma profile during deposition.

High density, low stress amorphous carbon film, and process and equipment for its deposition

A deposited amorphous carbon film includes at least 95% carbon. A percentage of sp3 carbon-carbon bonds present in the amorphous carbon film exceeds 30%, and a hydrogen content of the amorphous carbon film is less than 5%. A process of depositing amorphous carbon on a workpiece includes positioning the workpiece within a process chamber and positioning a magnetron assembly adjacent to the process chamber. The magnetron assembly projects a magnetic field into the process chamber. The method further includes providing a carbon target such that the magnetic field extends through the carbon target toward the workpiece. The method further includes providing a source gas to the process chamber, and providing pulses of DC power to a plasma formed from the source gas within the process chamber. The pulses of DC power are supplied in pulses of 40 microseconds or less, that repeat at a frequency of at least 4 kHz.

HIGH POWER IMPULSE MAGNETRON SPUTTERING PHYSICAL VAPOR DEPOSITION OF TUNGSTEN FILMS HAVING IMPROVED BOTTOM COVERAGE

Methods of forming a film layer using a HiPIMS PVD process include providing a bias to a substrate in a processing region of a process chamber, the substrate comprising a surface feature and the processing region of the process chamber comprising a sputter target, delivering at least one energy pulse to the sputter target to create a sputtering plasma of a sputter gas in the processing region, the at least one energy pulse having an average voltage between about 600 volts and about 1500 volts and an average current between about 50 amps and about 1000 amps at a frequency which is less than 5 kHz and greater than 100 Hz, and directing the sputtering plasma toward the sputter target to form an ionized species comprising material sputtered from the sputter target, the ionized species forming a film in the feature of the substrate having improved bottom coverage.