摘要:
A mass analyzer includes a mass analyzing magnet that applies a magnetic field to ions extracted from an ion source to deflect the ions, a mass analyzing slit that is provided downstream of the mass analyzing magnet and allows an ion of a desired ion species among the deflected ions to selectively pass, and a lens device that is provided between the mass analyzing magnet and the mass analyzing slit and applies a magnetic field and/or an electric field to the ion beam to adjust the convergence or divergence of a ion beam. The mass analyzer changes a focal point of the ion beam in a predetermined adjustable range between an upstream side and a downstream side of the mass analyzing slit with the lens device to adjust mass resolution.
摘要:
An ion implantation apparatus includes: a multistage linear acceleration unit including a plurality of stages of high-frequency resonators and a plurality of stages of focusing lenses; a first beam measuring unit disposed in the middle of the multistage linear acceleration unit and configured to allow passage of a beam portion adjacent to a center of a beam trajectory and measure a current intensity of another beam portion blocked by an electrode body outside a vicinity of the center of the beam trajectory; a second beam measuring unit disposed downstream of the multistage linear acceleration unit and configured to measure a current intensity of an ion beam exiting from the multistage linear acceleration unit; and a control device configured to adjust a control parameter of the plurality of stages of focusing lenses based on measurement results of the first and second beam measuring units.
摘要:
An ion implantation method includes irradiating a wafer having a first temperature with a first ion beam such that a predetermined channeling condition is satisfied and irradiating the wafer having a second temperature different from the first temperature with a second ion beam such that the predetermined channeling condition is satisfied, after the irradiation of the first ion beam.
摘要:
A mass analyzer includes a mass analyzing magnet that applies a magnetic field to ions extracted from an ion source to deflect the ions, a mass analyzing slit that is provided downstream of the mass analyzing magnet and allows an ion of a desired ion species among the deflected ions to selectively pass, and a lens device that is provided between the mass analyzing magnet and the mass analyzing slit and applies a magnetic field and/or an electric field to the ion beam to adjust the convergence or divergence of a ion beam. The mass analyzer changes a focal point of the ion beam in a predetermined adjustable range between an upstream side and a downstream side of the mass analyzing slit with the lens device to adjust mass resolution.
摘要:
A beam energy measuring device in an ion implanter includes a parallelism measuring unit that measures a parallelism of an ion beam at a downstream of a beam collimator of the ion implanter and an energy calculating unit that calculates an energy of the ion beam from the measured parallelism. The ion implanter may further include a control unit that controls a high energy multistage linear acceleration unit based on the measured energy of the ion beam so that the ion beam has a target energy.
摘要:
An ion implantation method includes irradiating a wafer having a first temperature with a first ion beam such that a predetermined channeling condition is satisfied and irradiating the wafer having a second temperature different from the first temperature with a second ion beam such that the predetermined channeling condition is satisfied, after the irradiation of the first ion beam.
摘要:
An ion implantation apparatus includes: a multistage linear acceleration unit including a plurality of stages of high-frequency resonators and a plurality of stages of focusing lenses; a first beam measuring unit disposed in the middle of the multistage linear acceleration unit and configured to allow passage of a beam portion adjacent to a center of a beam trajectory and measure a current intensity of another beam portion blocked by an electrode body outside a vicinity of the center of the beam trajectory; a second beam measuring unit disposed downstream of the multistage linear acceleration unit and configured to measure a current intensity of an ion beam exiting from the multistage linear acceleration unit; and a control device configured to adjust a control parameter of the plurality of stages of focusing lenses based on measurement results of the first and second beam measuring units.
摘要:
A high-energy ion implanter includes a high-energy multi-stage linear acceleration unit that accelerates an ion beam so as to generate a high-energy ion beam, a deflection unit that changes the direction of the high-energy ion beam toward a semiconductor wafer, and a beam transportation unit that transports the deflected high-energy ion beam to the wafer. The beam transportation unit includes a beam shaper, a high-energy beam scanner, a high-energy electric field type beam collimator, and a high-energy electric field type final energy filter.
摘要:
An ion implantation apparatus includes a beam parallelizing unit and a third power supply unit. The beam parallelizing unit includes an acceleration lens, and a deceleration lens disposed adjacent to the acceleration lens in an ion beam transportation direction. The third power supply unit operates the beam parallelizing unit under one of a plurality of energy settings. The plurality of energy settings includes a first energy setting suitable for transport of a low energy ion, and a second energy setting suitable for transport of a high energy ion beam. The third power supply unit is configured to generate a potential difference in at least the acceleration lens under the second energy setting, and generate a potential difference in at least the deceleration lens under the first energy setting. A curvature of the deceleration lens is smaller than a curvature of the acceleration lens.
摘要:
An ion implanter includes a high energy multistage linear acceleration unit for accelerating an ion beam. The high energy multistage linear acceleration unit includes high frequency accelerators in a plurality of stages provided along a beamline through which the ion beam travels, and electrostatic quadrupole lens devices in a plurality of stages provided along the beamline. The electrostatic quadrupole lens device in each of the stages includes a plurality of lens electrodes facing each other in a radial direction perpendicular to an axial direction, and disposed at an interval in a circumferential direction, an upstream side cover electrode covering a beamline upstream side of the plurality of lens electrodes and including a beam incident port, and a downstream side cover electrode covering a beamline downstream side of the plurality of lens electrodes and including a beam exiting port.