摘要:
An ion implantation apparatus includes an implantation processing chamber, a high voltage unit, and a high-voltage power supply system. In the implantation processing chamber ions are implanted into a workpiece. The high voltage unit includes an ion source unit for generating the ions, and a beam transport unit provided between the ion source unit and the implantation processing chamber. The high-voltage power supply system applies a potential to the high voltage unit under any one of a plurality of energy settings. The high-voltage power supply system includes a plurality of current paths formed such that a beam current flowing into the workpiece is returned to the ion source unit, and each of the plurality of energy settings is associated with a corresponding one of the plurality of current paths.
摘要:
An insulation structure of high voltage electrodes includes an insulator having an exposed surface and a conductor portion, which includes a joint region in contact with the insulator, and a heat-resistant portion provided, along at least part of an edge of the joint region, in such a manner as to be adjacent to the exposed surface of the insulator. The heat-resistant portion is formed of an electrically conductive material whose melting point is higher than that of the conductor portion. The heat-resistant portion may be so provided as to have a gap between the insulator and the exposed surface.
摘要:
An ion generation method uses a direct current discharge ion source provided with an arc chamber formed of a high melting point material, and includes: generating ions by causing molecules of a source gas to collide with thermoelectrons in the arc chamber and producing plasma discharge; and causing radicals generated in generating ions to react with a liner provided to cover an inner wall of the arc chamber at least partially. The liner is formed of a material more reactive to radicals generated as the source gas is dissociated than the material of the arc chamber.
摘要:
An ion source device has a configuration in which a cathode is provided in an arc chamber having a space for plasma formation, and a repeller is disposed to face a thermal electron discharge face of the cathode by interposing the space for plasma formation therebetween. An external magnetic field that is induced by a source magnetic field unit is applied to the space for plasma formation in a direction parallel to an axis that connects the cathode and the repeller. An opening is provided in a place corresponding to a portion in the repeller with the highest density of plasma that is formed in the space for plasma formation, and an ion beam is extracted from the opening.
摘要:
During ion implantation into a wafer, an ion beam current is measured, a change in vacuum conductance which changes in accordance with a change of the location of a structure operating in a vacuum beam line chamber or a vacuum treatment chamber is obtained, furthermore, changes in degree of vacuum at one or plural places are detected using a vacuum gauge installed in the vacuum beam line chamber or the vacuum treatment chamber. The amount of an ion beam current is corrected using the obtained vacuum conductance and the detected degree of vacuum at one or plural places, and the dose amount implanted into the wafer is controlled.
摘要:
An ion implantation method includes reciprocally scanning an ion beam, mechanically scanning a wafer in a direction perpendicular to the ion beam scanning direction, implanting ions into the wafer, and generating an ion implantation amount distribution in a wafer surface of an isotropic concentric circle shape for correcting non-uniformity in the wafer surface in other semiconductor manufacturing processes, by controlling a beam scanning speed in the ion beam scanning direction and a wafer scanning speed in the mechanical scanning direction at the same time and independently using the respective control functions defining speed correction amounts.
摘要:
A manufacturing method of a semiconductor device includes preparing a semiconductor substrate which is a base substrate of the semiconductor device and which is formed with a concavity and convexity part on the surface of the semiconductor substrate. The method further comprises depositing on the surface of the semiconductor substrate an impurity thin film including an impurity atom which becomes a donor or an acceptor in the semiconductor substrate and performing an ion implantation from a diagonal upper direction to the impurity thin film deposited on the concavity and convexity part of the semiconductor substrate. The method still further comprises recoiling the impurity atom from the inside of the impurity thin film to the inside of the concavity and convexity part by performing the ion implantation.
摘要:
In a beam processing apparatus including a beam scanner having a two electrodes type deflection scanning electrode, the beam scanner further includes shielding suppression electrode assemblies respectively at vicinities of upstream side and downstream side of the two electrodes type deflection scanning electrode and having openings in a rectangular shape for passing a charged particle beam. Each of the shielding suppression electrode assemblies is an assembly electrode comprising one sheet of a suppression electrode and two sheets of shielding ground electrodes interposing the suppression electrode. A total of front side portions and rear side portions of the two electrodes type deflection scanning electrode is shielded by the two sheets of shielding ground electrodes.
摘要:
A manufacturing method of a semiconductor device includes preparing a semiconductor substrate which is a base substrate of the semiconductor device and which is formed with a concavity and convexity part on the surface of the semiconductor substrate. The method further comprises depositing on the surface of the semiconductor substrate an impurity thin film including an impurity atom which becomes a donor or an acceptor in the semiconductor substrate and performing an ion implantation from a diagonal upper direction to the impurity thin film deposited on the concavity and convexity part of the semiconductor substrate. The method still further comprises recoiling the impurity atom from the inside of the impurity thin film to the inside of the concavity and convexity part by performing the ion implantation.
摘要:
The present invention is a method to enhance accuracy of irradiation with beam for an irradiation system with a beam. The irradiation system comprises a beam generation source, a mass analysis device, a beam transformer, a scanner which swings the beam reciprocally with high speed, a beam parallelizing device, an acceleration/deceleration device, an energy filtering device, and beam monitors. The beam transformer comprises a vertically focusing synchronized quadrupole electromagnet syQD and a horizontally focusing synchronized quadrupole electromagnet syQF. Consequently, it is possible to correct at least one of a deviation in beam divergence angle and a deviation in beam size within a range between a center trajectory and an outer trajectory after swinging of the beam by the scanner.