摘要:
Embodiments described herein provide methods and apparatus for treating a magnetic substrate having an imprinted, oxygen-reactive mask formed thereon by implanting ions into a magnetically active surface of the magnetic substrate through the imprinted oxygen-reactive mask, wherein the ions do not reduce the oxygen reactivity of the mask, and removing the mask by exposing the substrate to an oxygen-containing plasma. The mask may be amorphous carbon, through which carbon-containing ions are implanted into the magnetically active surface. The carbon-containing ions, which may also contain hydrogen, may be formed by activating a mixture of hydrocarbon gas and hydrogen. A ratio of the hydrogen and the hydrocarbon gas may be selected or adjusted to control the ion implantation.
摘要:
Apparatus and methods for the manufacture of semiconductor devices suitable for narrow pitch applications and methods of fabrication thereof are described herein. Disclosed are various single chambers configured to form and/or shape a material layer by oxidizing a surface of a material layer to form an oxide layer; removing at least some of the oxide layer by an etching process; and cyclically repeating the oxidizing and removing processes until the material layer is formed to a desired shape. In some embodiments, the material layer may be a floating gate of a semiconductor device.
摘要:
A method and apparatus for removing excess dopant from a doped substrate is provided. In one embodiment, a substrate is doped by surfaced deposition of dopant followed by formation of a capping layer and thermal diffusion drive-in. A reactive etchant mixture is provided to the process chamber, with optional plasma, to etch away the capping layer and form volatile compounds by reacting with excess dopant. In another embodiment, a substrate is doped by energetic implantation of dopant. A reactive gas mixture is provided to the process chamber, with optional plasma, to remove excess dopant adsorbed on the surface and high-concentration dopant near the surface by reacting with the dopant to form volatile compounds. The reactive gas mixture may be provided during thermal treatment, or it may be provided before or after at temperatures different from the thermal treatment temperature. The volatile compounds are removed. Substrates so treated do not form toxic compounds when stored or transported outside process equipment.
摘要:
A method of removing resist material from a substrate having a magnetically active surface is provided. The substrate is disposed in a processing chamber and exposed to a fluorine-containing plasma formed from a gas mixture having a reagent, an oxidizing agent, and a reducing agent. A cleaning agent may also be included. The substrate may be cooled by back-side cooling or by a cooling process wherein a cooling medium is provided to the processing chamber while the plasma treatment is suspended. Substrates may be flipped over for two-sided processing, and multiple substrates may be processed concurrently.
摘要:
A method and apparatus for removing excess dopant from a doped substrate is provided. In one embodiment, a substrate is doped by surfaced deposition of dopant followed by formation of a capping layer and thermal diffusion drive-in. A reactive etchant mixture is provided to the process chamber, with optional plasma, to etch away the capping layer and form volatile compounds by reacting with excess dopant. In another embodiment, a substrate is doped by energetic implantation of dopant. A reactive gas mixture is provided to the process chamber, with optional plasma, to remove excess dopant adsorbed on the surface and high-concentration dopant near the surface by reacting with the dopant to form volatile compounds. The reactive gas mixture may be provided during thermal treatment, or it may be provided before or after at temperatures different from the thermal treatment temperature. The volatile compounds are removed. Substrates so treated do not form toxic compounds when stored or transported outside process equipment.
摘要:
Processes and apparatus of forming patterns including magnetic and non-magnetic domains on a magnetically susceptible surface on a substrate are provided. In one embodiment, a method of forming a pattern of magnetic domains on a magnetically susceptible material disposed on a substrate includes exposing a first portion of a magnetically susceptible layer to a plasma formed from a gas mixture, wherein the gas mixture includes at least a halogen containing gas and a hydrogen containing gas for a time sufficient to modify a magnetic property of the first portion of the magnetically susceptible layer exposed through a mask layer from a first state to a second state.
摘要:
A method of removing resist material from a substrate having a magnetically active surface is provided. The substrate is disposed in a processing chamber and exposed to a fluorine-containing plasma formed from a gas mixture having a reagent, an oxidizing agent, and a reducing agent. A cleaning agent may also be included. The substrate may be cooled by back-side cooling or by a cooling process wherein a cooling medium is provided to the processing chamber while the plasma treatment is suspended. Substrates may be flipped over for two-sided processing, and multiple substrates may be processed concurrently.
摘要:
In a plasma immersion ion implantation process, the thickness of a pre-implant chamber seasoning layer is increased (to permit implantation of a succession of wafers without replacing the seasoning layer) without loss of wafer clamping electrostatic force due to increased seasoning layer thickness. This is accomplished by first plasma-discharging residual electrostatic charge from the thick seasoning layer. The number of wafers which can be processed using the same seasoning layer is further increased by fractionally supplementing the seasoning layer after each wafer is processed, which may be followed by a brief plasma discharging of the supplemented seasoning before processing the next wafer.
摘要:
In a plasma immersion ion implantation process, the thickness of a pre-implant chamber seasoning layer is increased (to permit implantation of a succession of wafers without replacing the seasoning layer) without loss of wafer clamping electrostatic force due to increased seasoning layer thickness. This is accomplished by first plasma-discharging residual electrostatic charge from the thick seasoning layer. The number of wafers which can be processed using the same seasoning layer is further increased by fractionally supplementing the seasoning layer after each wafer is processed, which may be followed by a brief plasma discharging of the supplemented seasoning before processing the next wafer.
摘要:
The angular ion distribution in plasma processing is controlled using a bias voltage frequency. In one example, a plasma containing gas ions is generated in a plasma chamber. The plasma sheath is modified using an aperture disposed between the plasma sheath and the workpiece so that the plasma sheath takes a shape above the aperture. An oscillating radio frequency bias voltage is generated and applied to a workpiece holder. The workpiece holder applies the bias voltage to the workpiece to generate a workpiece bias voltage with respect to the plasma to attract ions across the plasma sheath toward the workpiece. The aperture and the frequency of the bias voltage control an angle at which the ions are attracted toward the workpiece.