摘要:
A plasma enhanced atomic layer deposition (PEALD) system includes a first chamber component coupled to a second chamber component to provide a processing chamber defining an isolated processing space within the processing chamber. A substrate holder is provided within the processing chamber and configured to support a substrate, a first process material supply system is configured to supply a first process material to the processing chamber and a second process material supply system is configured to supply a second process material to the processing chamber. A power source is configured to couple electromagnetic power to the processing chamber, and a sealing assembly interposed between the first and second chamber components. The sealing assembly includes a plurality of sealing members configured to reduce the amount of external contaminants permeating through an interface of the first and second components into the isolated processing space of the processing chamber, wherein the film is formed on the substrate by alternatingly introducing the first process material and the second process material.
摘要:
A plasma enhanced atomic layer deposition (PEALD) method and system, the system including a process chamber and a substrate holder provided within the processing chamber and configured to support a substrate on which a predetermined film will be formed. A first process material supply system is configured to supply a first process material to the process chamber, and a second process material supply system configured to supply a second process material to the process chamber in order to provide a reduction reaction with the first process material to form the predetermined film on the substrate. Also included is a power source configured to couple electromagnetic power to the process chamber to generate a plasma within the process chamber to facilitate the reduction reaction, and a chamber component exposed to the plasma and made from a film compatible material that is compatible with the predetermined film deposited on the substrate.
摘要:
A method light enhanced atomic layer deposition for forming a film on a substrate. The method includes disposing the substrate in a process chamber of a light enhanced atomic layer deposition (LEALD) system configured to perform a LEALD process; and depositing a film on the substrate using the LEALD process, where the depositing includes (a) exposing the substrate to a first process material, (b) exposing the substrate to a second process material containing a reducing agent and irradiating the substrate with a first light radiation having either no or at least partial temporal overlap with the exposing of the substrate to the second process material, (c) repeating steps (a) and (b) until the desired film has been deposited. According to one embodiment of the invention, the deposited film can be a TaCN film or a TaC film.
摘要:
An iPVD system uses a high density inductively coupled plasma (ICP) at high pressure of at least 50 mTorr to deposit uniform ultra-thin layer of a tantalum nitride material barrier material onto the sidewalls of high aspect ratio nano-size features on semiconductor substrates, preferably less than 2 nm thick with less than 4 nm in the field areas. The process includes depositing an ultra-thin TaN barrier layer having a high nitrogen concentration that produces high resistivity, preferably at least 1000 micro-ohm-cm. The ultra-thin TaN film is deposited by a low deposition rate process of less than 20 nm/minute, preferably 2-10 nm/min, to produce the high N/Ta ratio layer without nitriding the tantalum target. The layer provides a barrier to copper (Cu) diffusion and a high etch resistant etch-stop layer for subsequent deposition-etch processes.
摘要:
A method for performing ionized physical vapor deposition (iPVD) is described, whereby the substrate temperature can be rapidly changed to control a metal deposition process and increase the quality of the metal deposited. In one embodiment, a copper deposition process can be performed.
摘要:
A method and system for performing multiple depositions on a substrate using an improved Ionized Physical Vapor Deposition (IPVD) system that allows IPVD processes and plasma-enhanced processes, such as PEALD and PECVD, to be performed in a single processing chamber. A determination of the state of an in-coming substrate can be made by sensing the substrate automatically or interrogating data relating to the state of the substrate to arrive at the determination. A controller selects and executes a process in response to the determination using a processing apparatus configured to alternatively perform multiple processes in response to commands from the controller.
摘要:
An iPVD system is programmed to deposit a barrier and/or seed layer using a Ru-containing material into high aspect ratio nano-size features on semiconductor substrates using a process which enhances the sidewall coverage compared to the field and bottom coverage(s) while minimizing or eliminating overhang within an IPVD processing chamber. In the preferred embodiment, an IPVD apparatus having a frusto-conical ruthenium target equipped with a high density ICP source is provided.
摘要:
An iPVD apparatus (20) is programmed to deposit material (10) into high aspect ratio submicron features (11) on semiconductor substrates (21) by cycling between deposition and etch modes within a vacuum chamber (30). The modes operate at different power and pressure parameters. Pressure of more than 50 mTorr, for example, is used for sputtering material from a target while pressure of less than a few mTorr, for example, is used to etch. Bias power on the substrate is an order of magnitude higher for etching, producing several hundred volt bias for etching, but only a few tens of volts for deposition. The alternating etching modes remove deposited material that overhangs edges of features on the substrate, removes some of the deposited material from the bottoms (15) of the features, and resputters the removed deposited material onto sidewalls (16) of the features. The substrate (21) is cooled during deposition and etching, and particularly during etching to substantially below 0° C. RF energy is coupled into the chamber (30) to form a high density plasma, with substantially higher RF power coupled during deposition than during etching. The substrate (21) is moved closer to the plasma source during etching than during deposition.
摘要:
An iPVD apparatus (20) is programmed to deposit material (10) onto semiconductor substrates (21) by cycling between deposition and etch modes within a vacuum chamber (30). Static magnetic fields are kept to a minimum during at least the etch modes, at least less than 150 Gauss, typically less than 50 Gauss, and preferably in the range of 0-10 Gauss. Static magnetic fields during deposition modes may be more than 150 Gauss, in the range of 0-50 Gauss, or preferably 20-30 Gauss, and may be the same as during etch modes or switched between a higher level during deposition modes and a lower level, including zero, during etch modes. Such switching may be by switching electromagnet current or by moving permanent magnets, by translation or rotation. Static magnetic fields are kept to a minimum during at least the etch modes, at least less than 150 Gauss, typically less than 50 Gauss, and preferably in the range of 1-10 Gauss. The modes may operate at different power and pressure parameters. Pressure of more than 50 mTorr are preferred for deposition in a thermalized plasma while pressure of less than a few mTorr is preferred for etching.
摘要:
An iPVD system is programmed to deposit uniform material, such as a metallic material, into high aspect ratio nano-sized features on semiconductor substrates using a process that enhances the feature filling compared to the field deposition, while maximizing the size of the grain features in the deposited material opening at the top of the feature during the process. Plural sequential dry filling plasma processes are used with backside gas pressure varied to control substrate temperature.