摘要:
An ion implantation system may comprise a plasma source for providing a plasma and a workpiece holder arranged to receive a bias with respect to the plasma to attract ions across a plasma sheath toward the substrate. The system may also include an extraction plate arrangement comprising a multiplicity of different apertures each arranged to provide an ion beam having ions distributed over a range of angles of incidence on the workpiece, wherein a first ion beam extracted from a first aperture has a first beam profile that differs from a second ion beam extracted from a second aperture.
摘要:
Techniques for diamond nucleation control for thin film processing are disclosed. In one particular embodiment, the techniques may be realized as a method for generating a plasma having a plurality of ions; depositing a plurality of diamond nucleation centers on a substrate with the ions in the plasma using an extraction plate having at least one gap, wherein the plasma ions pass through the at least one gap in the extraction plate to generate a focused ion beam to deposit the plurality of diamond nucleation centers; and controlling the growth of a continuous diamond film from the diamond nucleation centers on the substrate by controlling at least one of a temperature around the substrate, a temperature of the plasma, a pressure around the substrate, and a concentration of the ions in the plasma.
摘要:
An ion implantation system may comprise a plasma source for providing a plasma and a workpiece holder arranged to receive a bias with respect to the plasma to attract ions across a plasma sheath toward the substrate. The system may also include an extraction plate arrangement comprising a multiplicity of different apertures each arranged to provide an ion beam having ions distributed over a range of angles of incidence on the workpiece, wherein a first ion beam extracted from a first aperture has a first beam profile that differs from a second ion beam extracted from a second aperture.
摘要:
A time-of-flight (TOF) ion sensor system for monitoring an angular distribution of ion species having an ion energy and incident on a substrate includes a drift tube wherein the ion sensor system is configured to vary an angle of the drift tube with respect to a plane of the substrate. The drift tube may have a first end configured to receive a pulse of ions from the ion species wherein heavier ions and lighter ions of the pulse of ions arrive in packets at a second end of the drift tube. An ion detector may be disposed at the second end of the ion sensor, wherein the ion detector is configured to detect the packets of ions derived from the pulse of ions and corresponding to respective different ion masses.
摘要:
Techniques for forming shallow junctions are disclosed. In one particular exemplary embodiment, the techniques may be realized as a method for forming shallow junctions. The method may comprise generating an ion beam comprising molecular ions based on one or more materials selected from a group consisting of: digermane (Ge2H6), germanium nitride (Ge3N4), germanium-fluorine compounds (GFn, wherein n=1, 2, or 3), and other germanium-containing compounds. The method may also comprise causing the ion beam to impact a semiconductor wafer.
摘要:
A improved, lower cost method of producing solar cells utilizing selective emitter design is disclosed. The contact regions are created on the substrate without the use of lithography or masks. The method utilizes ion implantation technology, and the relatively low accuracy requirements of the contact regions to reduce the process steps needed to produce a solar cell. In some embodiments, the current of the ion beam is selectively modified to create the highly doped contact regions. In other embodiments, the ion beam is focused, either through the use of an aperture or via adjustments to the beam line components to create the necessary doping profile. In still other embodiments, the wafer scan rate is modified to create the desired ion implantation pattern.
摘要:
A method and apparatus are disclosed for improving space charge neutralization adjacent a magnet of an ion implanter by confining the electrons inside a magnetic region thereof to reduce electron losses and therefore improve the transport efficiency of a low energy beam. A magnetic pole member for a magnet of an ion implanter is provided that includes an outer surface having a plurality of magnetic field concentration members that form magnetic field concentrations adjacent the magnetic pole member. Electrons that encounter this increased magnetic field are repelled back along the same magnetic field line rather than allowed to escape. An analyzer magnet and ion implanter including the magnet pole are also provided so that a method of improving low energy ion beam space charge neutralization in an ion implanter is realized.
摘要:
A technique for improving ion implantation throughput and dose uniformity is disclosed. In one exemplary embodiment, a method for improving ion implantation throughput and dose uniformity may comprise measuring an ion beam density distribution in an ion beam. The method may also comprise calculating an ion dose distribution across a predetermined region of a workpiece that results from a scan velocity profile, wherein the scan velocity profile comprises a first component and a second component that control a relative movement between the ion beam and the workpiece in a first direction and a second direction respectively, and wherein the ion dose distribution is based at least in part on the ion beam density distribution. The method may further comprise adjusting at least one of the first component and the second component of the scan velocity profile to achieve a desired ion dose distribution in the predetermined region of the workpiece.
摘要:
Non-doping implantation process utilizing a plasma ion implantation system. A plasma ion implantation system is used to perform a non-doping implantation process such as a pre-amorphization implantation process or a strain altering implantation. Use of the plasma ion implantation system to perform a non-doping implantation process results in higher throughput and is conducive to sequential ion implantation processing.
摘要:
A technique for atomic layer deposition is disclosed. In one particular exemplary embodiment, the technique may be realized by an apparatus for atomic layer deposition. The apparatus may comprise a process chamber having a substrate platform to hold at least one substrate. The apparatus may also comprise a supply of a precursor substance, wherein the precursor substance comprises atoms of at least one first species and atoms of at least one second species, and wherein the supply provides the precursor substance to saturate a surface of the at least one substrate. The apparatus may further comprise a plasma source of metastable atoms of at least one third species, wherein the metabstable atoms are capable of desorbing the atoms of the at least one second species from the saturated surface of the at least one substrate to form one or more atomic layers of the at least one first species.