Abstract:
Processing methods comprising oxidizing a metal nitride film to form a metal oxynitride layer and etching the metal oxynitride layer with a metal halide etchant. The metal halide etchant can be, for example, WCl5, WOCl4 or TaCl5. Methods of filling a trench with a seam-free gapfill are also described. A metal nitride film is deposited in the trench to form a seam and pinch-off an opening of the trench. The pinched-off opening is subjected to a directional oxidizing plasma and a metal halide etchant to open the pinched-off top and allow access to the seam.
Abstract:
Embodiments of the invention provide a method for atomic layer etching (ALE) of a substrate. According to one embodiment, the method includes providing a substrate, and alternatingly exposing the substrate to a fluorine-containing gas and an aluminum-containing gas to etch the substrate. According to one embodiment, the method includes providing a substrate containing a metal oxide film, exposing the substrate to a fluorine-containing gas to form a fluorinated layer on the metal oxide film, and thereafter, exposing the substrate to an aluminum-containing gas to remove the fluorinated layer from the metal oxide film. The exposing steps may be alternatingly repeated at least once to further etch the metal oxide film.
Abstract:
Disclosed and claimed herein is a composition for forming a spin-on hard-mask, having a fullerene derivative and a crosslinking agent. Further disclosed is a process for forming a hard-mask.
Abstract:
Disclosed and claimed herein is a composition for forming a spin-on hard-mask, having a fullerene derivative and a crosslinking agent. Further disclosed is a process for forming a hard-mask.
Abstract:
Embodiments of the present invention provide a methods for patterning a hardmask layer with good process control for an ion implantation process, particularly suitable for manufacturing the fin field effect transistor (FinFET) for semiconductor chips. In one embodiment, a method of patterning a hardmask layer disposed on a substrate includes forming a planarization layer over a hardmask layer disposed on a substrate, disposing a patterned photoresist layer over the planarization layer, patterning the planarization layer and the hardmask layer uncovered by the patterned photoresist layer in a processing chamber, exposing a first portion of the underlying substrate, and removing the planarization layer from the substrate.
Abstract:
Multilayered stacks having layers of silicon interleaved with layers of a dielectric, such as silicon dioxide, are plasma etched with non-corrosive process gas chemistries. Etching plasmas of fluorine source gases, such as SF6 and/or NF3 typically only suitable for dielectric layers, are energized by pulsed RF to achieve high aspect ratio etching of silicon/silicon dioxide bi-layers stacks without the addition of corrosive gases, such as HBr or Cl2. In embodiments, a mask open etch and the multi-layered stack etch are performed in a same plasma processing chamber enabling a single chamber, single recipe solution for patterning such multi-layered stacks. In embodiments, 3D NAND memory cells are fabricated with memory plug and/or word line separation etches employing a fluorine-based, pulsed-RF plasma etch.
Abstract:
【課題】基板を載置する下部電極と対向して配置される内側上部電極および外側上部電極に高周波電力を分配供給する容量結合型のプラズマ処理装置において、外側/内側電力分配比を調節するために設けられる可変コンデンサのプラズマ密度分布特性またはプロセス特性の面内プロファイルの制御に対する調整ノブとしての機能を向上させる。 【解決手段】このプラズマ処理装置においては、外側/内側電力分配比の調節に用いる可変コンデンサのバリコン・ステップ選択範囲を共振領域RE S を避けつつ低域側の非共振領域LE S と高域側の非共振領域HE S とに跨って広範囲に拡張することにより、プラズマ密度分布やプロセス特性の面内プロファイルを径方向で制御するための調整ノブとしての効き目を向上させる。