摘要:
A method of ion implanting a species in a workpiece to a selected ion implantation profile depth includes placing a workpiece having a semiconductor material on an electrostatic chuck in or near a processing region of a plasma reactor chamber and applying a chucking voltage to the electrostatic chuck. The method further includes introducing into the chamber a precursor gas including a species to be ion implanted in the workpiece and applying an RF bias to the electrostatic chuck, the RF bias having a bias level corresponding to the ion implantation profile depth.
摘要:
A method of fabricating a semiconductor-on-insulator structure from a pair of semiconductor wafers, includes forming an oxide layer on at least a first surface of a first one of the wafers and performing a bonding enhancement implantation step by ion implantation of a first species in the first surface of at least either of the pair of wafers. The method further includes performing a cleavage ion implantation step on one of the pair of wafers by ion implanting a second species to define a cleavage plane across a diameter of the wafer at the predetermined depth below the top surface of the one wafer. The wafers are then bonded together by placing the first surfaces of the pair of wafers onto one another so as to form an semiconductor-on-insulator structure. The method also includes separating the one wafer along the cleavage plane so as to remove a portion of the one wafer between the second surface and the cleavage plane, whereby to form an exposed cleaved surface of a remaining portion of the one wafer on the semiconductor-on-insulator structure. Finally, the cleaved surface is smoothed, preferably by carrying out a low energy high momentum ion implantation step.
摘要:
An integrated microelectronic circuit has a multi-layer interconnect structure overlying the transistors consisting of stacked metal pattern layers and insulating layers separating adjacent ones of said metal pattern layers. Each of the insulating layers is a dielectric material with plural gas bubbles distributed within the volume of the dielectric material to reduce the dielectric constant of the material, the gas bubbles being formed by ion implantation of a gaseous species into the dielectric material.
摘要:
A plasma immersion ion implantation reactor for ion implanting a species into a surface layer of a workpiece includes an enclosure which has a side wall and a ceiling defining a chamber and a workpiece support pedestal within the chamber having a workpiece support surface facing the ceiling and defining a process region extending generally across the wafer support pedestal and confined laterally by the side wall and axially between the workpiece support pedestal and the ceiling. The enclosure has at least a first pair of openings at generally opposite sides of the process region and a first hollow conduit outside of the chamber having first and second ends connected to respective ones of the first pair of openings, so as to provide a first reentrant path extending through the conduit and across said process region. A gas distribution apparatus is provided on or near an interior surface of the reactor for introducing a process gas containing the species to be ion implanted and a first RE plasma source power applicator for generating a plasma in the chamber.
摘要:
A method for ion implanting a species into a surface layer of a workpiece in a chamber includes placing the workpiece in a processing zone of the chamber bounded by a chamber side wall and a chamber ceiling facing said workpiece and between a pair of ports of the chamber near generally opposite sides to the processing zone and connected together by a conduit external of the chamber. The method further includes introducing into the chamber a process gas comprising the species to be implanted, and further generating from the process gas a plasma current and causing the plasma current to oscillate in a circulatory reentrant path comprising the conduit and the processing zone.
摘要:
A method of measuring ion dose in a plasma immersion ion implantation reactor during ion implantation of a selected species into a workpiece includes placing the workpiece on a pedestal in the reactor and feeding into the reactor a process gas comprising a species to be implanted into the workpiece, and then coupling RF plasma source power to a plasma in the reactor. It further includes coupling RF bias power to the workpiece by an RF bias power generator that is coupled to the workpiece through a bias feedpoint of the reactor and measuring RF current at the feedpoint to generate a current-related value, and then integrating the current-related over time to produce an ion implantation dose-related value.
摘要:
A valve system having high maximum gas flow rate and fine control of gas flow rate, includes a valve housing for blocking gas flow through a gas flow path, a large area opening through said housing having a first arcuate side wall and a small area opening through said housing having a second arcuate side wall, and respective large area and small area rotatable valve flaps in said large area and small area openings, respectively, and having arcuate edges congruent with said first and second arcuate side walls, respectively and defining therebetween respective first and second valve gaps. The first and second valve gaps are sufficiently small to block flow of a gas on one side of said valve housing up to a predetermined pressure limit, thereby obviating any need for O-rings.
摘要:
A method of processing a workpiece includes introducing an optical absorber material precursor gas into a chamber containing the workpiece, generating an RF oscillating toroidal plasma current in a reentrant path that includes a process zone overlying the workpiece by applying RF source power, so as to deposit a layer of an optical absorber material on the workpiece, and exposing the workpiece to optical radiation that is at least partially absorbed in the optical absorber layer.
摘要:
A method of processing a thin film structure on a semiconductor substrate using an optically writable mask includes placing the substrate in a reactor chamber, the substrate having on its surface a target layer to be etched in accordance with a predetermined pattern, and depositing a carbon-containing hard mask layer on the substrate by (a) introducing a carbon-containing process gas into the chamber, (b) generating a reentrant toroidal RF plasma current in a reentrant path that includes a process zone overlying the workpiece by coupling plasma RF source power to an external portion of the reentrant path, and (c) coupling RF plasma bias power or bias voltage to the workpiece. The method further includes photolithographically defining the predetermined pattern in the carbon-containing hard mask layer, and etching the target layer in the presence of the hard mask layer.
摘要:
A method for implanting ions in a surface layer of a workpiece includes placing the workpiece on a workpiece support in a chamber with the surface layer being in facing relationship with a ceiling of the chamber, thereby defining a processing zone between the workpiece and the ceiling, and introducing into the chamber a process gas which includes the species to be implanted in the surface layer of the workpiece. The method further includes generating from the process gas a plasma by inductively coupling RF source power into the processing zone from an RF source power generator through an inductively coupled RF power applicator, and applying an RF bias from an RF bias generator to the workpiece support.