摘要:
A method of annealing a substrate that has a trench containing a dielectric material formed on a silicon nitride layer between the dielectric material and the substrate, where the method includes annealing the substrate at a first temperature of about 800° C. or more in a first atmosphere comprising an oxygen containing gas, and annealing the substrate at a second temperature of about 800° C. to about 1400° C. in a second atmosphere lacking oxygen.
摘要:
Methods of depositing a silicon oxide layer on a substrate are described. The methods may include the steps of providing a substrate to a deposition chamber, generating an atomic oxygen precursor outside the deposition chamber, and introducing the atomic oxygen precursor into the chamber. The methods may also include introducing a silicon precursor to the deposition chamber, where the silicon precursor and the atomic oxygen precursor are first mixed in the chamber. The silicon precursor and the atomic oxygen precursor react to form the silicon oxide layer on the substrate, and the deposited silicon oxide layer may be annealed. Systems to deposit a silicon oxide layer on a substrate are also described.
摘要:
Embodiments of the present invention provide methods, apparatuses, and devices related to chemical vapor deposition of silicon oxide. In one embodiment, a single-step deposition process is used to efficiently form a silicon oxide layer exhibiting high conformality and favorable gap-filling properties. During a pre-deposition gas flow stabilization phase and an initial deposition stage, a relatively low ratio of silicon-containing gas:oxidant deposition gas is flowed, resulting in formation of highly conformal silicon oxide at relatively slow rates. Over the course of the deposition process step, the ratio of silicon-containing gas:oxidant gas is increased, resulting in formation of less-conformal oxide material at relatively rapid rates during later stages of the deposition process step.
摘要:
A method to form a silicon oxide layer, where the method includes the step of providing a continuous flow of a silicon-containing precursor to a chamber housing a substrate, where the silicon-containing precursor is selected from TMOS, TEOS, OMTS, OMCTS, and TOMCATS. The method may also include the steps of providing a flow of an oxidizing precursor to the chamber, and causing a reaction between the silicon-containing precursor and the oxidizing precursor to form a silicon oxide layer. The method may further include varying over time a ratio of the silicon-containing precursor:oxidizing precursor flowed into the chamber to alter a rate of deposition of the silicon oxide on the substrate.
摘要:
Embodiments of the present invention provide methods, apparatuses, and devices related to chemical vapor deposition of silicon oxide. In one embodiment, a single-step deposition process is used to efficiently form a silicon oxide layer exhibiting high conformality and favorable gap-filling properties. During a predeposition gas flow stabilization phase and an initial deposition stage, a relatively low ratio of silicon-containing gas:oxidant deposition gas is flowed, resulting in formation of highly conformal silicon oxide at relatively slow rates. Over the course of the deposition process step, the ratio of silicon-containing gas:oxidant gas is increased, resulting in formation of less-conformal oxide material at relatively rapid rates during later stages of the deposition process step.
摘要:
A method of annealing a substrate comprising a trench containing a dielectric material, the method including annealing the substrate at a first temperature of about 200° C. to about 800° C. in a first atmosphere comprising an oxygen containing gas, and annealing the substrate at a second temperature of about 800° C. to about 1400° C. in a second atmosphere lacking oxygen. In addition, a method of annealing a substrate comprising a trench containing a dielectric material, the method including annealing the substrate at a first temperature of about 400° C. to about 800° C. in the presence of an oxygen containing gas, purging the oxygen containing gas away from the substrate, and raising the substrate to a second temperature from about 900° C. to about 1100° C. to further anneal the substrate in an atmosphere that lacks oxygen.
摘要:
Embodiments of the present invention provide methods, apparatuses, and devices related to chemical vapor deposition of silicon oxide. In one embodiment, a single-step deposition process is used to efficiently form a silicon oxide layer exhibiting high conformality and favorable gap-filling properties. During a pre-deposition gas flow stabilization phase and an initial deposition stage, a relatively low ratio of silicon-containing gas:oxidant deposition gas is flowed, resulting in formation of highly conformal silicon oxide at relatively slow rates. Over the course of the deposition process step, the ratio of silicon-containing gas:oxidant gas is increased, resulting in formation of less-conformal oxide material at relatively rapid rates during later stages of the deposition process step.
摘要:
A gas distribution showerhead for use in a semiconductor fabrication process features a face plate having gas outlet ports in the form of elongated slots or channels. The use of elongated gas outlet ports in accordance with embodiments of the present invention substantially reduces the incidence of undesirable spotting and streaking of deposited material where the showerhead is closely spaced from the wafer. A showerhead featuring a face plate having a tapered profile to reduce edge thickness of deposited material at close face plate-to-wafer spacings is also disclosed.
摘要:
A variety of techniques may be employed, separately or in combination, to improve the gap-filling performance of a dielectric material formed by chemical vapor deposition (CVD). In one approach, a first dielectric layer is deposited using sub-atmospheric chemical vapor deposition (SACVD), followed by a second dielectric layer deposited by high density plasma chemical vapor deposition (HDP-CVD) or plasma-enhanced chemical vapor deposition (PECVD). In another approach, a SACVD dielectric layer is deposited in the presence of reactive ionic species flowed from a remote plasma chamber into the processing chamber, which performs etching during the deposition process. In still another approach, high aspect trenches may be filled utilizing SACVD in combination with oxide layers deposited at high temperatures.
摘要:
A method of filling a gap on a substrate includes providing flows of silicon-containing processing gas oxidizing processing gas, and phosphorous-containing processing gas to a chamber housing the substrate and depositing a first portion of a P-doped silicon oxide film as a substantially conformal layer in the gap by causing a reaction among the processing gases and varying over time a ratio of the gases. The temperature of the substrate is maintained below about 500° C. throughout deposition of the conformal layer. The method also includes depositing a second portion of the P-doped silicon oxide film as a bulk layer by maintaining the ratio of the gases substantially constant throughout deposition of the bulk layer. The temperature of the substrate is maintained below about 500° C. throughout deposition of the bulk layer.