摘要:
A method of orienting a semiconductor wafer. The method includes rotating a wafer about a central axis; exposing a plurality of edge portions of the rotating wafer to light having a predetermined wavelength from one or more light sources; detecting a subsurface mark in one of the plurality of edge portions of the rotating wafer; and orienting the wafer using the detected subsurface mark as a reference.
摘要:
An apparatus comprises a plasma flood gun for neutralizing a positive charge buildup on a semiconductor wafer during a process of ion implantation using an ion beam. The plasma flood gun comprises more than two arc chambers, wherein each arc chamber is configured to generate and release electrons into the ion beam in a respective zone adjacent to the semiconductor wafer.
摘要:
A semiconductor structure with a metal gate structure includes a first type field-effect transistor having a first gate including: a high k dielectric material on a substrate, a first metal layer on the high k dielectric material layer and having a first work function, and a first aluminum layer on the first metal layer. The first aluminum layer includes an interfacial layer including aluminum, nitrogen and oxygen. The device also includes a second type field-effect transistor having a second gate including: the high k dielectric material on the substrate, a second metal layer on the high k dielectric material layer and having a second work function different from the first work function, and a second aluminum layer on the second metal layer.
摘要:
A method of depositing a metal film on a substrate with patterned features includes placing a substrate with patterned features into a photo-induced chemical vapor deposition (PI-CVD) process chamber. The method also includes depositing a metal film by PI-CVD to fill the patterned features from bottom up.
摘要:
A process control method is provided for ion implantation methods and apparatuses, to produce a high dosage area on a substrate such as may compensate for noted non-uniformities. In an ion implantation tool, separately controllable electrodes are provided as multiple sets of opposed electrodes disposed outside an ion beam. Beam blockers are positionable into the ion beam. Both the electrodes and beam blockers are controllable to reduce the area of the ion beam that is incident upon a substrate. The electrodes and beam blockers also change the position of the reduced-area ion beam incident upon the surface. The speed at which the substrate scans past the ion beam may be dynamically changed during the implantation process to produce various dosage concentrations in the substrate.
摘要:
An multi-ion beam implantation apparatus and method are disclosed. An exemplary apparatus includes an ion beam source that emits at least two ion beams; an ion beam analyzer; and a multi-ion beam angle incidence control system. The ion beam analyzer and the multi-ion beam angle incidence control system are configured to direct the emitted at least two ion beams to a wafer.
摘要:
Provided is a method and structure for utilizing advance channel substrate materials in semiconductor manufacturing. Advanced channel substrate materials such as germanium and Group III-V channel substrate materials, are advantageously utilized. One or more capping films including at least a nitride layer are formed over the channel substrate prior to patterning, ion implantation and the subsequent stripping and wet cleaning operations. With the capping layers intact during these operations, attack of the channel substrate material is prevented and the protective films are easily removed subsequently. The films are dimensioned in conjunction with the ion implantation operation to enable the desired dopant profile and concentration to be formed in the channel substrate material.
摘要:
An apparatus for cleaning wafers includes a chamber, a rotatable substrate holder inside the chamber, a nozzle above the rotatable substrate holder, a cover facing downward and fluidly coupled with the nozzle. The rotatable substrate holder is configured to mount one or more semiconductor wafers on the rotatable substrate holder. The nozzle is configured to spray a cleaning medium onto the one or more semiconductor wafers. The cover is of a shape having a top edge with a top cross-sectional area and a bottom edge with a bottom cross-sectional area.
摘要:
An apparatus comprises an ionization chamber for providing ions during a process of ion implantation, and an electron beam source device inside the ionization chamber. The electron beam source device comprises a field emission array having a plurality of emitters for generating electrons in vacuum under an electric field.
摘要:
A method for fabricating an integrated device is disclosed. A protective layer is formed over a gate structure when forming epitaxial (epi) features adjacent to another gate structure uncovered by the protective layer. The protective layer is thereafter removed after forming the epitaxial (epi) features. The disclosed method provides an improved method for removing the protective layer without substantial defects resulting. In an embodiment, the improved formation method is achieved by providing a protector over an oxide-base material, and then removing the protective layer using a chemical comprising hydrofluoric acid.