摘要:
One or more openings in an organic mask layer deposited on a first insulating layer over a substrate are formed. One or more openings in the first insulating layer are formed through the openings in the organic mask using a first iodine containing gas. An antireflective layer can be deposited on the organic mask layer. One or more openings in the antireflective layer are formed down to the organic mask layer using a second iodine containing gas. The first insulating layer can be deposited on a second insulating layer over the substrate. One or more openings in the second insulating layer can be formed using a third iodine containing gas.
摘要:
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.
摘要:
One or more openings in an organic mask layer deposited on a first insulating layer over a substrate are formed. One or more openings in the first insulating layer are formed through the openings in the organic mask using a first iodine containing gas. An antireflective layer can be deposited on the organic mask layer. One or more openings in the antireflective layer are formed down to the organic mask layer using a second iodine containing gas. The first insulating layer can be deposited on a second insulating layer over the substrate. One or more openings in the second insulating layer can be formed using a third iodine containing gas.
摘要:
Methods of polymer deposition for forming reduced critical dimensions are described. In one embodiment, a substrate is provided into a chamber, the substrate having a patterned layer disposed on an underlying layer formed thereon. The patterned layer includes a plurality of openings, each opening having a sidewall, a bottom, and a critical dimension. A gas mixture is provided into the chamber, the gas mixture having an etching gas and a polymer control gas. The polymer control gas includes a polymerizing fluorocarbon CxFy gas and a C—H bond containing gas. A plasma is formed with the gas mixture and a conformal polymer layer is deposited in the presence of the plasma on the patterned layer to form a reduced critical dimension in each opening. The reduced critical dimension is smaller than the corresponding critical dimension of the opening.
摘要:
Boron-doped carbon-based hardmask etch processing is described. In an example, a method of patterning a film includes etching a boron-doped amorphous carbon layer with a plasma based on a combination of CH4/N2/O2 and a flourine-rich source such as, but not limited to, CF4, SF6 or C2F6.
摘要翻译:描述了硼掺杂的碳基硬掩模蚀刻处理。 在一个示例中,图案化膜的方法包括基于CH 4 / N 2 / O 2和富含富含氟化物源(例如但不限于CF 4,SF 6或SF 4)的组合,用等离子体蚀刻硼掺杂的无定形碳层 C2F6。
摘要:
Boron-doped carbon-based hardmask etch processing is described. In an example, a method of patterning a film includes etching a boron-doped amorphous carbon layer with a plasma based on a combination of CH4/N2/O2 and a flourine-rich source such as, but not limited to, CF4, SF6 or C2F6.
摘要翻译:描述了硼掺杂的碳基硬掩模蚀刻处理。 在一个示例中,图案化膜的方法包括基于CH 4 / N 2 / O 2和富含富含氟化物源(例如但不限于CF 4,SF 6或SF 4)的组合,用等离子体蚀刻硼掺杂的无定形碳层 C2F6。
摘要:
One or more openings in an organic mask layer deposited on a first insulating layer over a substrate are formed. One or more openings in the first insulating layer are formed through the openings in the organic mask using a first iodine containing gas. An antireflective layer can be deposited on the organic mask layer. One or more openings in the antireflective layer are formed down to the organic mask layer using a second iodine containing gas. The first insulating layer can be deposited on a second insulating layer over the substrate. One or more openings in the second insulating layer can be formed using a third iodine containing gas.
摘要:
A plasma etch reactor for plasma enhanced etching of a workpiece such as a semiconductor wafer includes a housing defining a process chamber, a workpiece support configured to support a workpiece within the chamber during processing and comprising a plasma bias power electrode. The reactor further includes a first process gas inlet coupled to receive predominantly or pure oxygen gas and a second process gas inlet coupled to receive a polymerizing etch process gas. The reactor has a ceiling plasma source power electrode including a center circular gas disperser configured to receive a process gas from the first process gas inlet and to distribute the process gas into the chamber over the workpiece, and an inner annular gas disperser centered around the center gas disperser configured to receive the process gas from the second process gas inlet and to distribute the process gas into the chamber over the workpiece through an inner plurality of injection ports.
摘要:
A method for etching a substrate includes etching at least one first layer of the substrate with a non-uniform substrate temperature and etching at least one second layer of the substrate with uniform substrate temperatures.
摘要:
Methods for etching an oxide layer disposed on a substrate through a patterned layer defining one or more features to be etched into the oxide layer are provided herein. In some embodiments, a method for etching an oxide layer disposed on a substrate through a patterned layer defining one or more features to be etched into the oxide layer may include: etching the oxide layer through the patterned layer using a process gas comprising a polymer forming gas and an oxygen containing gas to form the one or more features in the oxide layer; and pulsing at least one of the polymer forming gas or the oxygen containing gas for at least a portion of etching the oxide layer to control a dimension of the one or more features.