摘要:
In a laser annealing system for workpieces such as semiconductor wafers, a pyrometer wavelength response band is established within a narrow window lying between the laser emission band and a fluorescence emission band from the optical components of the laser system, the pyrometer response band lying in a wavelength region at which the optical absorber layer on the workpiece has an optical absorption coefficient as great as or greater than the underlying workpiece. A multi-layer razor-edge interference filter having a 5-8 nm wavelength cut-off edge transition provides the cut-off of the laser emission at the bottom end of the pyrometer response band.
摘要:
Wafer level arc detection is provided in a plasma reactor using an RF transient sensor coupled to a threshold comparator, and a system controller responsive to the threshold comparator.
摘要:
Defects and fixed charge in a gate dielectric near the gate dielectric-substrate interface are reduced by performing a gate dielectric relaxation anneal step prior to source-drain ion implantation, in which the wafer temperature is ramped gradually to near a melting temperature of the substrate equal to a peak post-ion implantation anneal peak temperature. The ramping rates are sufficiently gradual so that the gate dielectric is held above its reflow temperature for a significant duration.
摘要:
A plasma reactor chamber is characterized by performing the following steps: (a) for each one of the chamber parameters, ramping the level of the one chamber parameter while sampling RF electrical parameters at an RF bias power input to the wafer support pedestal and computing from each sample of the RF electrical parameters the values of the plasma parameters, and storing the values with the corresponding levels of the one chamber parameter as corresponding chamber parameter data; (b) for each one of the chamber parameters, deducing, from the corresponding chamber parameter data, a single variable function for each of the plasma parameters having the one chamber parameter as an independent variable.
摘要:
Apparatus for dynamic surface annealing of a semiconductor wafer includes a source of laser radiation emitting at a laser wavelength and comprising an array of lasers arranged in rows and columns, the optical power of each the laser being individual adjustable and optics for focusing the radiation from the array of lasers into a narrow line beam in a workpiece plane corresponding to a workpiece surface, whereby the optics images respective columns of the laser array onto respective sections of the narrow line beam. A pyrometer sensor is provided that is sensitive to a pyrometer wavelength. An optical element in an optical path of the optics is tuned to divert radiation emanating from the workpiece plane to the pyrometry sensor. As a result, the optics images each of the respective section of the narrow line beam onto a corresponding portion of the pyrometer sensor. The apparatus further includes a controller responsive to the pyrometry sensor and coupled to adjust individual optical outputs of respective columns of the laser array in accordance with outputs of corresponding portions of the pyrometry sensor.
摘要:
A method of processing a thin film structure on a semiconductor substrate using an optically writable mask, the method includes placing the substrate in a reactor chamber, the substrate having on its surface a target layer to be exposed to a light source in accordance with a predetermined pattern, depositing an optically writable carbon-containing 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, (c) coupling RF plasma bias power or bias voltage to the workpiece. The method further includes optically writing on the carbon-containing mask layer in accordance with the predetermined pattern with writing light of a characteristic suitable for transforming the transparency or opacity of the optically writable mask layer and exposing through the mask layer the target layer with reading light of a characteristic different from that of the writing light.
摘要:
A plasma reactor includes a vacuum chamber including a sidewall, a ceiling and a wafer support pedestal near a floor of the chamber, and a vacuum pump coupled to the chamber. A process gas inlet is coupled to the chamber and a process gas source coupled to the process gas inlet. The reactor further includes a metal sputter target at the ceiling, a high voltage D.C. source coupled to the sputter target, an RF plasma source power generator coupled to the wafer support pedestal and having a frequency suitable for exciting kinetic electrons, and an RF plasma bias power generator coupled to the wafer support pedestal and having a frequency suitable for coupling energy to plasma ions.
摘要:
A method of forming a conductor in a thin film structure on a semiconductor substrate includes forming high aspect ratio openings in a base layer having vertical side walls, depositing a dielectric barrier layer comprising a dielectric compound of a barrier metal on the surfaces of the high aspect ratio openings including the vertical side walls, depositing a metal barrier layer comprising the barrier metal on the first barrier layer, depositing a main conductor species seed layer on the metal barrier layer and depositing a main conductor layer. The method further includes annealing the main conductor layer by (a) directing light from an array of continuous wave lasers into a line of light extending at least partially across the thin film structure, and (b) translating the line of light relative to the thin film structure in a direction transverse to the line of light. The method of Claim 1 further comprising, prior to the annealing step, depositing an amorphous carbon optical absorber layer on the main conductor layer. The step of depositing an amorphous carbon optical absorber layer includes introducing a carbon-containing process gas into a reactor chamber containing the substrate in a process zone of the reactor, applying RF source power to an external reentrant conduit of the reactor to generate a reentrant toroidal RF plasma current passing through the process zone and applying a bias voltage to the substrate.
摘要:
A method of depositing a carbon layer on a workpiece includes placing the workpiece in a reactor chamber, introducing a carbon-containing process gas into the chamber, 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 coupling RF plasma bias power or bias voltage to the workpiece.
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.