摘要:
Method and apparatus for metalorganic chemical vapor deposition of a lead zirconate titanate (PZT) film on a substrate is provided. The method for forming a PZT film comprises vaporizing and introducing vaporized lead bis (tetramethyl heptanedionate), zirconium bis (tetramethyl heptanedionate) bis (isopropoxy) and titanium bis (tetramethyl heptanedionate) bis (isopropoxy) into a chamber. The apparatus comprises a CVD chamber (20) having a gas distribution system (22) and a substrate support (24), one or more vaporizers (30a,c) fluidly connected to the gas distribution system of the CVD chamber, an oxygen gas source (31a,31b) fluidly connected to the gas distribution system of the CVD chamber; and one or more precursor sources (32) fluidly connected to the one or more vaporizers, the one or more precursor sources comprising Pb(thd) 2 , Zr(OiPr) 2 (thd) 2 and Ti(OiPr) 2 (thd) 2 .
摘要:
A substrate processing chamber, particularly a chemical vapor deposition (CVD) chamber used both for thermal deposition of a conductive material and a subsequently performed plasma process. The arrangement reduces thermal deposition of the conductive material on peripheral portions of the pedestal (140) supporting a wafer (142) and in a pumping channel (160) exhausting the chamber. A peripheral ring (146) placed on the pedestal, preferably also used to center the wafer, is thermally isolated from the pedestal so that its temperature is kept substantially lower than that of the wafer. Despite its thermal isolation, the peripheral ring is electrically connected to the pedestal to prevent arcing. The pumping channel is lined with various elements (166, 167, 170, 172) some of which are electrically floating and which are designed so that conductive material deposited on these elements do not deleteriously affect a plasma generated for processing the wafer.
摘要:
The disclosure relates to a plasma chamber RF excitation system including a high frequency RF power source (12a) having a fixed RF match circuit (30) at its output and sensing and control apparatus (32) for sensing the amount of RF power delivered by the RF power source and for regulating the output power level of the RF power source so as to maintain the RF power delivered by the RF power source at a desired level, and an RF plasma chamber including an RF radiator. The power source is mounted proximate or directly on the plasma chamber (10) so that the distance between them is much less than an eighth of a wavelength at the frequency of the RF source. The system may further include an endpoint detector (12c) for a plasma etch process or a chamber cleaning process which halts the process when the VSWR or reflected power ceases to change in response to the progress of the etch process.
摘要:
The present invention provides a method of depositing ruthenium films on a substrate via liquid source chemical vapor deposition wherein the source material is liquid at room temperature and utilizing process conditions such that deposition of the ruthenium films occurs at a temperature in the kinetic-limited temperature regime. Also provided is a method of depositing a thin ruthenium film on a substrate by liquid source chemical vapor deposition using bis-(ethylcyclopentadienyl) ruthenium by vaporizing the bis-(ethylcyclopentadienyl) ruthenium at a vaporization temperature of about 100-300 °C to form a CVD source material gas, providing an oxygen source reactant gas and forming a thin ruthenium film on a substrate in a reaction chamber using the CVD source material gas and the oxygen source reactant gas at a substrate temperature of about 100-500 °C.
摘要:
The disclosure relates to methods and apparatus for depositing titanium films in a CVD system (10) using a heater heated to at least about 400°C at a pressure of about 1-10 torr in the reactor chamber (30), introducing a reactant gas and source gas at a reactant source gas flow ratio of less than about 250:1, and applying RF energy from a supply (5) to form a plasma. The present invention provides deposition rates up to 200 Å/minute on semiconductor substrates (36) from a titanium tetrachloride source, according to specific embodiments.
摘要:
A process and apparatus is described for the processing of thin films on semiconductor substrates using one or more liquid precursor sources (50, 60, 70) wherein the liquid precursor source (50) with the highest vapor pressure is first vaporized and then introduced as a vapor into a common manifold (30) connected to a processing chamber, with the point (32) of introduction being spaced away from the processing chamber (10). A second liquid precursor source (60), having a vapor pressure lower than the first liquid precursor source (50), is then introduced in vaporized form into the manifold (30) at a point (34) closer to the processing chamber (10). This is repeated for each liquid precursor source, with each succeeding liquid precursor source having the next lower vapor pressure being introduced in vaporized form into the manifold (30) at a point closer to the processing chamber (10) than the previous liquid precursor source. A temperature gradient may then be maintained along the manifold (30) with the temperature gradually increased in a direction toward the processing chamber (10) while still mitigating premature boiling of the liquid precursor sources (50, 60, 70) prior to vaporization, or condensation of already vaporized liquid precursor sources or components.
摘要:
A plasma reactor comprising: a main processing chamber including a pedestal (142) for supporting a substrate thereon; a source of processing gas (44) disposed above said pedestal; a pumping channel (160) surrounding a periphery of said main processing chamber and connected thereto by a passageway and connectable to a vacuum pumping system; and at least one removable liner (170,172) placed on walls of said pumping channel.