Abstract:
Embodiments described herein provide for a method of forming an etch selective hardmask. An amorphous carbon hardmask is implanted with various dopants to increase the hardness and density of the hardmask. The ion implantation of the amorphous carbon hardmask also maintains or reduces the internal stress of the hardmask. The etch selective hardmask generally provides for improved patterning in advanced NAND and DRAM devices.
Abstract:
Methods and apparatuses for minimizing line edge/width roughness in lines formed by photolithography are provided. The random diffusion of acid generated by a photoacid generator during a lithography process contributes to line edge/width roughness. Methods disclosed herein apply an electric field and/or a magnetic field during photolithography processes. The field application controls the diffusion of the acids generated by the photoacid generator along the line and spacing direction, preventing the line edge/width roughness that results from random diffusion. Apparatuses for carrying out the aforementioned methods are also disclosed herein.
Abstract:
A neutral beam is scanned across a workpiece surface and the beam angle is controlled in a manner that avoids variation in the beam source-to-workpiece distance during scanning.
Abstract:
Plasma process chambers employing distribution grids having focusing surfaces thereon enabling angled fluxes to reach a substrate, and associated methods are disclosed. A distribution grid is disposed in a chamber between the plasma and a substrate. The distribution grid includes a first surface facing the substrate and a focusing surface facing the plasma. A passageway extends through the distribution grid, and is sized with a width to prevent the plasma sheath from entering therein. By positioning the focusing surface at an angle other than parallel to the substrate, an ion flux from the plasma may be accelerated across the plasma sheath and particles of the flux pass through the passageway to be incident upon the substrate. In this manner, the angled ion flux may perform thin film deposition and etch processes on sidewalls of features extending orthogonally from or into the substrate, as well as angled implant and surface modification.