摘要:
A method of patterning a substrate, comprises providing a set of patterned features on the substrate, exposing the set of patterned features to a dose of ions incident on the substrate over multiple angles, and selectively etching exposed portions of the patterned features.
摘要:
A method of patterning a substrate, comprises providing a set of patterned features on the substrate, exposing the set of patterned features to a dose of ions incident on the substrate over multiple angles, and selectively etching exposed portions of the patterned features.
摘要:
A method of treating resist features comprises positioning, in a process chamber, a substrate having a set of patterned resist features on a first side of the substrate and generating a plasma in the process chamber having a plasma sheath adjacent to the first side of the substrate. The method may further comprise modifying a shape of a boundary between the plasma and the plasma sheath with a plasma sheath modifier so that a portion of the shape of the boundary is not parallel to a plane defined by a front surface of the substrate facing the plasma, wherein ions from the plasma impinge on the patterned resist features over a wide angular range during a first exposure.
摘要:
A method of treating resist features comprises positioning, in a process chamber, a substrate having a set of patterned resist features on a first side of the substrate and generating a plasma in the process chamber having a plasma sheath adjacent to the first side of the substrate. The method may further comprise modifying a shape of a boundary between the plasma and the plasma sheath with a plasma sheath modifier so that a portion of the shape of the boundary is not parallel to a plane defined by a front surface of the substrate facing the plasma, wherein ions from the plasma impinge on the patterned resist features over a wide angular range during a first exposure.
摘要:
A method for ion implantation is disclosed which includes decreasing the implant energy level as the implant process is ongoing. In this way, either a box-like profile or a profile with higher retained dose can be achieved, enabling enhanced activation at the same junction depth. In one embodiment, the initial implant energy is used to implant about 25% of the dose. The implant energy level is then reduced and an additional 50% of the dose is implanted. The implant energy is subsequently decreased again and the remainder of the dose is implanted. The initial portion of the dose can optionally be performed at cold, such as cryogenic temperatures, to maximize amorphization of the substrate.
摘要:
A method of using helium to create ultra shallow junctions is disclosed. A pre-implantation amorphization using helium has significant advantages. For example, it has been shown that dopants will penetrate the substrate only to the amorphous-crystalline interface, and no further. Therefore, by properly determining the implant energy of helium, it is possible to exactly determine the junction depth. Increased doses of dopant simply reduce the substrate resistance with no effect on junction depth. Furthermore, the lateral straggle of helium is related to the implant energy and the dose rate of the helium PAI, therefore lateral diffusion can also be determined based on the implant energy and dose rate of the helium PAI. Thus, dopant may be precisely implanted beneath a sidewall spacer, or other obstruction.
摘要:
A technique for forming 3D structures is disclosed. In one particular exemplary embodiment, the technique may be realized as a method for forming 3D structures. The method may comprise providing a substrate comprising at least two vertically extending fins that are spaced apart from one another to define a trench; depositing a dielectric material in the trench between the at least two vertically extending fins; providing an etch stop layer within the dielectric material, the etch stop layer having a first side and a second opposite side; removing the dielectric material near the first side of the etch stop layer.
摘要:
A surface of an insulating workpiece is implanted to form either hydrophobic or hydrophilic implanted regions. A conductive coating is deposited on the workpiece. The coating may be a polymer in one instance. This coating preferentially forms either on the implanted regions if these implanted regions are hydrophilic or on the non-implanted regions if the implanted regions are hydrophobic.
摘要:
An apparatus that generates molecular ions and methods to generate molecular ions are disclosed. At least a first species is ionized in an ion source. The first species ions and/or first species combine to form molecular ions. These molecular ions may be transported to a second chamber, which may be an arc chamber or diffusion chamber, and are extracted. The molecular ions may have a larger atomic mass than the first species or first species ions. A second species also may be ionized with the first species to form molecular ions. In one instance, the first and second species are both molecules.
摘要:
Oxygen, silicon, germanium, carbon, or nitrogen is selectively implanted into a workpiece. The workpiece is annealed to incorporate the ions into the workpiece. A compound semiconductor is then formed on the workpiece. For example, gallium nitride may be formed on a silicon, silicon carbide, or sapphire workpiece. The width of the implanted regions can be configured to compensate for any shrinkage during annealing.