摘要:
A deposition process including a dry etch process, followed by a deposition process of a high-k dielectric is disclosed. The dry etch process involves placing a substrate to be cleaned into a processing chamber to remove surface oxides. A gas mixture is energized to form a plasma of reactive gas which reacts with an oxide on the substrate, forming a thin film. The substrate is heated to vaporize the thin film and expose a substrate surface. The substrate surface is substantially free of oxides. Deposition is then used to form a layer on the substrate surface.
摘要:
Nonvolatile memory cells and methods of forming the same are provided, the methods including forming a first conductor at a first height above a substrate; forming a first pillar-shaped semiconductor element above the first conductor, wherein the first pillar-shaped semiconductor element comprises a first heavily doped layer of a first conductivity type, a second lightly doped layer above and in contact with the first heavily doped layer, and a third heavily doped layer of a second conductivity type above and in contact with the second lightly doped layer, the second conductivity type opposite the first conductivity type; forming a first dielectric antifuse above the third heavily doped layer of the first pillar-shaped semiconductor element; and forming a second conductor above the first dielectric antifuse.
摘要:
The present invention generally comprises a silicon dioxide atomic layer deposition method. By providing pyridine as a catalyst, water may be utilized as the oxidization source while depositing at a low temperature. Prior to exposing the substrate to the water, the substrate may be exposed to a pyridine soak process. Additionally, the water may be co-flowed to the chamber with the pyridine through separate conduits to reduce interaction prior to entering the chamber. Alternatively, the pyridine may be co-flowed with a silicon precursor that does not react with pyridine.
摘要:
The present invention generally comprises a silicon dioxide atomic layer deposition method. By providing pyridine as a catalyst, water may be utilized as the oxidization source while depositing at a low temperature. Prior to exposing the substrate to the water, the substrate may be exposed to a pyridine soak process. Additionally, the water may be co-flowed to the chamber with the pyridine through separate conduits to reduce interaction prior to entering the chamber. Alternatively, the pyridine may be co-flowed with a silicon precursor that does not react with pyridine.
摘要:
Embodiments of the invention provide methods for forming a material on a substrate which includes exposing a plurality of substrates within a batch process chamber to a first oxidizing gas during a pretreatment process, exposing the substrates sequentially to a precursor and a second oxidizing gas during an ALD cycle and repeating the ALD cycle to form a material on the substrates. In a preferred example, a hafnium precursor is used during the ALD process to form a hafnium-containing material, such as hafnium oxide. In one example, the first and second oxidizing gases are the same oxidizing gases. In a preferred example, the first and second oxidizing gases are different oxidizing gases, such that the pretreatment process contains ozone and the ALD process contains water vapor.
摘要:
The present invention generally comprises a silicon dioxide atomic layer deposition method. By providing pyridine as a catalyst, water may be utilized as the oxidization source while depositing at a low temperature. Prior to exposing the substrate to the water, the substrate may be exposed to a pyridine soak process. Additionally, the water may be co-flowed to the chamber with the pyridine through separate conduits to reduce interaction prior to entering the chamber. Alternatively, the pyridine may be co-flowed with a silicon precursor that does not react with pyridine.
摘要:
A method for forming a refractory metal layer that features two-stage nucleation prior to bulk deposition of the same. The method includes placing a substrate in a deposition zone, flowing, into the deposition zone during a first deposition stage, a silicon source, such as a silane gas, and a tungsten source, such as tungsten-hexafluoride gas, so as to obtain a predetermined ratio of the two gases therein. During a second deposition stage, subsequent to the first deposition stage, the ratio of the two gases is varied. Specifically, in the first deposition stage there is a greater quantity of silane gas than tungsten-hexafluoride gas. In the second deposition stage there may be a greater quantity of tungsten-hexafluoride than silane.
摘要:
An apparatus and process for limiting residue remaining after the etching of metal in a semiconductor manufacturing process by injecting a halogen-containing gas without a plasma into a processing chamber. The wafer is then exposed to the remnants of the halogen-containing gas in the chamber before the metal is deposited on the wafer. The exposure can occur in the same chamber as the metal deposition, or a different chamber. The wafer can remain in the chamber or be moved to another chamber for etching after exposure and deposition.
摘要:
Provided are methods for depositing a high-k dielectric film on a substrate. The methods comprise annealing a substrate after cleaning the surface to create dangling bonds and depositing the high-k dielectric film on the annealed surface.
摘要:
Methods for preparing a substrate for a subsequent film formation process are described. Methods for preparing a substrate for a subsequent film formation process, without immersion in an aqueous solution, are also described. A process is described that includes disposing a substrate into a process chamber, the substrate having a thermal oxide surface with substantially no reactive surface terminations. The thermal oxide surface is exposed to a partial pressure of water above the saturated vapor pressure at a temperature of the substrate to convert the dense thermal oxide with substantially no reactive surface terminations to a surface with hydroxyl surface terminations. This can occur in the presence of a Lewis base such as ammonia.