摘要:
Plasma etching or resputtering of a layer of sputtered materials including opaque metal conductor materials may be controlled in a sputter reactor system. In one embodiment, resputtering of a sputter deposited layer is performed after material has been sputtered deposited and while additional material is being sputter deposited onto a substrate. A path positioned within a chamber of the system directs light or other radiation emitted by the plasma to a chamber window or other optical view-port which is protected by a shield against deposition by the conductor material. In one embodiment, the radiation path is folded to reflect plasma light around the chamber shield and through the window to a detector positioned outside the chamber window. Although deposition material may be deposited onto portions of the folded radiation path, in many applications, the deposition material will be sufficiently reflective to permit the emission spectra to be detected by a spectrometer or other suitable detector without significant signal loss. The etching or resputtering may be terminated when the detector detects that an underlying layer has been reached or when some other suitable process point has been reached.
摘要:
A one-piece inner shield usable in a plasma sputter reactor and extending from the target to the pedestal with a smooth inner surface and supported by an annular flange in a middle portion of the shield. The shield may be used to support the RF coil used in exciting the plasma. An outer shield includes an outwardly extending flange on its end alignable with the inner shield flange, holes in correspondence to recesses in the inner shield for standoffs for the RF coil, and circumferentially arranged gas flow holes.
摘要:
One aspect of the invention includes an auxiliary magnet ring positioned outside of the chamber wall of a plasma sputter reactor and being disposed at least partially radially outwardly of an RF coil used to inductively generate a plasma, particularly for sputter etching the substrate being sputter deposited. Thereby, a magnetic barrier prevents the plasma from leaking outwardly to the coil and improves the uniformity of sputter etching. The magnetic field also acts as a magnetron when the coil, when made of the same material as the primary target, is being used as a secondary target. Another aspect of the invention includes a one-piece inner shield extending from the target to the pedestal with a smooth inner surface and supported by an annular flange in a middle portion of the shield. The shield may be used to support the RF coil.
摘要:
A one-piece inner shield usable in a plasma sputter reactor and extending from the target to the pedestal with a smooth inner surface and supported by an annular flange in a middle portion of the shield. The shield may be used to support the RF coil used in exciting the plasma. An outer shield includes an outwardly extending flange on its end alignable with the inner shield flange, holes in correspondence to recesses in the inner shield for standoffs for the RF coil, and circumferentially arranged gas flow holes.
摘要:
In a method of cleaning a surface of a substrate processing chamber component to remove process deposits, the component surface is cooled to a temperature below about −40° C. to fracture the process deposits on the surface. The surface can be cooled by immersing the surface in a low temperature fluid, such as liquid nitrogen. In another version, the component surface is heated to fracture and delaminate the deposits, and optionally, subsequently rapidly cooled to form more fractures. The component surface cleaning can also be performed by bead blasting followed by a chemical cleaning step.
摘要:
A method of fabricating a component for a substrate processing chamber involves providing a preform having internal and external surfaces, and providing a mandrel having a textured surface with a pattern of textured features comprising protrusions and depressions. The internal surface of the preform component is contacted with the textured surface of mandrel, and a pressure is applied to the external surface of the preform. The pressure is sufficiently high to plastically deform the preform over the textured surface of the mandrel to form a component having a textured internal surface comprising the pattern of textured feature that are shaped and sized to adhere process residues generated in the processing of substrates.
摘要:
A method of fabricating a substrate processing chamber component involves forming a component having a textured surface and sweeping a jet of pressurized fluid across the textured surface of the component. The jet of fluid is pressurized sufficiently high to dislodge substantially all the particles from the textured surface. The method can be applied to dislodge grit particles from textured exposed surfaces formed by electromagnetic energy beam scanning and grit blasting. The method can also be applied to remove loosely adhered coating particles from the textured surfaces of coated components.
摘要:
A component for a substrate processing chamber has a structure having an overlying metal coating. The metal coating has a plurality of electron beam textured features that are formed by scanning an electron beam across a surface of the metal coating. The electron beam textured features include a plurality of depressions and protuberances on the surface that are capable of accumulating process deposits during processing of a substrate to reduce contamination of the substrate. The component having the metal coating provides improved processing results, and exhibits reduced erosion during cleaning processes performed to remove process deposits from the component.
摘要:
A method of fabricating a substrate processing chamber component involves forming a component having a textured surface and sweeping a jet of pressurized fluid across the textured surface of the component. The jet of fluid is pressurized sufficiently high to dislodge substantially all the particles from the textured surface. The method can be applied to dislodge grit particles from textured exposed surfaces formed by electromagnetic energy beam scanning and grit blasting. The method can also be applied to remove loosely adhered coating particles from the textured surfaces of coated components.
摘要:
An apparatus for a physical vapor deposition system includes a target having a sidewall having an undercut thereon defining a net erosion area and a net redeposition area.