Abstract:
The present invention discloses a method for providing a tungsten layer on a substrate surface (101) and thereafter covering the as-formed tungsten layer (103) with a planarized material (107) having an etch rate similar to the etch rate of tungsten (103); and thereafter etching the planarized material (107) and top part of the as-formed tungsten layer (103) until all the planarized material (107) is removed.
Abstract:
Methods and apparatus for processing substrates are provided. In some embodiments, methods of processing substrates includes: (a) providing a process gas comprising a polymer-forming gas and an etching gas between a first electrode and a second electrode within the processing volume, wherein the first electrode is opposite the second electrode; (b) applying a first voltage waveform from a first RF power source to the second electrode to form a plasma from the process gas, wherein the plasma has a first ion energy to deposit a polymer layer directly atop a dielectric layer of the substrate; and (c) adjusting the first voltage waveform to a second voltage waveform to increase an ion energy of the plasma from the first ion energy to a second ion energy, wherein the plasma at the second ion energy ceases to deposit the polymer layer and proceeds to etch the polymer layer and the dielectric layer.
Abstract:
A hard mask layer is deposited on a feature layer over a substrate. The hard mask layer comprises an organic mask layer. An opening in the organic mask layer is formed using a first gas comprising a halogen element at a first temperature greater than a room temperature to expose a portion of the feature layer. In one embodiment, a gas comprising a halogen element is supplied to a chamber. An organic mask layer on an insulating layer over a substrate is etched using the halogen element at a first temperature to form an opening to expose a portion of the insulating layer.
Abstract:
The disclosure relates to methods for a multi-step plasma process to remove metal hard mask layer from an underlying hard mask layer that may be used to implement a sub-lithographic integration scheme. The sub-lithographic integration scheme may include iteratively patterning several features into the metal hard mask layer that may be transferred to the hard mask layer. However, the iterative process may leave remnants of previous films on top of the metal hard mask that may act as mini-masks that may interfere with the pattern transfer to the hard mask layer. One approach to remove the mini-masks may be to use a two-step plasma process that removes the mini-mask using a first gas mixture ratio of a carbon-containing gas and a chlorine-containing gas. The remaining metal hard mask layer may be removed using a second gas mixture ratio of the carbon-containing gas and the chlorine-containing gas.
Abstract:
Various embodiments of the present invention are directed to a method for passivating a metal line (300, 301, 302, 310), e.g. a memory cell and a source line of a CBRAM, prior to removing a masking layer (106) in order to prevent oxidation of the metal line. The method includes exposing and reacting the metal line (e.g. copper) with a fluorine based etchant so as to form a protective film (400) composed of CuFx.
Abstract:
Provided are atomic layer deposition methods to deposit a film using a circular batch processing chamber with a plurality of sections separated by gas curtains so that each section independently has a process condition.
Abstract:
A method for removing a doped amorphous carbon mask from a semiconductor substrate is disclosed. The method comprises generating a plasma to be used in treating the substrate, wherein the plasma comprises an oxygen containing gas, a halogen containing gas, and a hydrogen containing gas; and treating the substrate by exposing the substrate to the plasma. The doped amorphous carbon mask can be a boron doped amorphous carbon mask or a nitrogen doped amorphous carbon mask. The method can result in a mask removal rate ranging from about 1,000 ngstrms/minute to about 12,000 ngstrms/minute. Further, gases can be applied to the substrate before plasma treatment, after plasma treatment, or both to reduce the amount of defects or pinholes found in the substrate film.
Abstract:
A method for fabricating a semiconductor device, such as a GaN high electron mobility transistor (HEMT) device, including etching a thermal via into a back-side of a semiconductor substrate and depositing a diamond nucleation seed layer across the back-side of the substrate. The method further includes coating the diamond nucleation with a mask layer and removing mask material outside of the thermal via on the planar portions of the back-side of the substrate. The method includes removing portions of the diamond nucleation layer on the planar portions and then removing the remaining portion of the mask material in the thermal via. The method then includes depositing a bulk diamond layer within the thermal via on the remaining portion of the diamond nucleation layer so that diamond only grows in the thermal via and not on the planar portions of the substrate.
Abstract:
【課題】1回の枚葉プラズマ処理の中でプラズマプロセスのゆらぎやばらつきを精緻に抑制する。 【解決手段】OES計測部110は、各ステップの終了時または終了直後に分光計測値MOES i を出力する。CD推定部140は、推定モデル記憶部142より取り込むCD推定モデルAM i と分光計測値MOES i とを用いて各ステップ分のCD推定値ACD i を求める。プロセス制御部132は、次のステップにおいて、レシピ記憶部136より取り込んだ次のステップ分のプロセス条件設定値PC i+1 および制御モデル記憶部138より取り込んだ次のステップ分のプロセス制御モデルCM i+1 に加えて、CD推定部140より受け取った前ステップ分のCD推定値ACD i を制御対象130の自動制御に用いる。
Abstract:
Embodiments of the invention generally relate to methods of removing and/or cleaning a substrate surface having different material layers disposed thereon using water vapor plasma treatment. In one embodiment, a method for cleaning a surface of a substrate includes positioning a substrate into a processing chamber, the substrate having a dielectric layer disposed thereon forming openings on the substrate, exposing the dielectric layer disposed on the substrate to water vapor supplied into the chamber to form a plasma in the water vapor, maintaining a process pressure in the chamber at between about 1 Torr and about 120 Torr, and cleaning the contact structure formed on the substrate.