摘要:
A method for fabricating a multiple layer silicon nitride film on a semiconductor substrate is provided herein. In one embodiment, a method for fabricating a multiple layer silicon nitride film on a semiconductor substrate includes providing a substrate over which the multiple layer silicon nitride film is to be formed; and forming the multiple layer silicon nitride film in a single processing reactor by: (a) depositing a base layer comprising silicon nitride on the base structure; (b) depositing a middle layer comprising a stress-controlling material on the base layer; and (c) depositing a top layer comprising silicon nitride on the middle layer. The stress-controlling material selectively increases or reduces the stress of the multiple layer silicon nitride film as compared to silicon nitride alone.
摘要:
An assembly comprises a multilayer nitride stack having nitride etch stop layers formed on top of one another, each of the nitride etch stop layers is formed using a film forming process. A method of making the multilayer nitride stack includes placing a substrate in a single wafer deposition chamber and thermally shocking the substrate momentarily prior to deposition. A first nitride etch stop layer is deposited over the substrate. A second nitride etch stop layer is deposited over the first nitride etch stop layer.
摘要:
A method and apparatus for a CVD chamber that provides uniform heat distribution, efficient precursor delivery, uniform distribution of process and inert chemicals, and thermal management of residues in the chamber and exhaust surfaces by changing the mechanical design of a single wafer thermal CVD chamber. The improvements include a processing chamber comprising a chamber body and a chamber lid defining a processing region, a substrate support disposed in the processing region, a gas delivery system mounted on the chamber lid, the gas delivery system comprising a lid, an adapter ring and two blocker plates that define a gas mixing region, and a face plate fastened to the adapter ring, a heating element positioned to heat the adapter ring to a desired temperature, and a temperature controlled exhaust system. The improvements also include a method for depositing a silicon nitride layer on a substrate, comprising vaporizing bis(tertiary-butylamino) silane, flowing the bis(tertiary-butylamino) silane into a processing chamber, flowing ammonia into a processing chamber, combining the two reactants in a mixer in the chamber lid, having an additional mixing region defined by an adapter ring and at least two blocker plates, heating the adapter ring, flowing the bis(tertiary-butylamino) silane through a gas distribution plate into a processing region above a substrate. The improvements reduce defects across the surface of the substrate and improve product yield.
摘要:
Embodiments of methods for fabricating a spacer structure on a semiconductor substrate are provided herein. In one embodiment, a method for fabricating a spacer structure on a semiconductor substrate includes providing a substrate containing a base structure over which the spacer structure is to be formed. The spacer structure may be formed over the base structure by depositing a first layer comprising silicon nitride on the base structure, depositing a second layer comprising a silicon-based dielectric material on the first layer, and depositing a third layer comprising silicon nitride on the second layer. The first, second, and third layers are deposited in a single processing reactor.
摘要:
Embodiments of the invention generally provide a method for depositing silicon-containing films. In one embodiment, a method for depositing silicon-containing material film on a substrate includes flowing a nitrogen and carbon containing chemical into a deposition chamber, flowing a silicon-containing source chemical having silicon-nitrogen bonds into the processing chamber, and heating the substrate disposed in the chamber to a temperature less than about 550 degrees Celsius. In another embodiment, the silicon containing chemical is trisilylamine and the nitrogen and carbon containing chemical is (CH3)3—N.
摘要:
Embodiments of the invention generally provide a method for depositing a film containing silicon (Si) and nitrogen (N). In one embodiment, the method includes heating a substrate disposed in a processing chamber to a temperature less than about 650 degrees Celsius, flowing a nitrogen-containing gas into the processing chamber, flowing a silicon-containing gas into the processing chamber, and depositing a SiN-containing layer on a substrate. The silicon-containing gas is at least one of a gas identified as NR2—Si(R′2)—Si(R′2)—NR2 (amino(di)silanes), R3—Si—N═N═N (silyl azides), R′3—Si—NR—NR2 (silyl hydrazines) or 1,3,4,5,7,8-hexamethytetrasiliazane, wherein R and R′ comprise at least one functional group selected from the group of a halogen, an organic group having one or more double bonds, an organic group having one or more triple bonds, an aliphatic alkyl group, a cyclical alkyl group, an aromatic group, an organosilicon group, an alkyamino group, or a cyclic group containing N or Si.
摘要:
Embodiments of methods for fabricating a silicon nitride stack on a semiconductor substrate are provided herein. In one embodiment, a method for fabricating a silicon nitride stack on a semiconductor substrate includes depositing a base layer comprising silicon nitride on the substrate using a first set of process conditions that selectively control the stress of the base layer; and depositing an upper layer comprising silicon nitride using a second set of process conditions that selectively control at least one of an oxidation resistance and a refractive index of the upper layer.
摘要:
A method and apparatus for low temperature deposition of doped silicon nitride films is disclosed. The improvements include a mechanical design for a CVD chamber that provides uniform heat distribution for low temperature processing and uniform distribution of process chemicals, and methods for depositing at least one layer comprising silicon and nitrogen on a substrate by heating a substrate, flowing a silicon containing precursor into a processing chamber having a mixing region defined by an adaptor ring and one or more blocker plates and an exhaust system heating the adapter ring and a portion of the exhaust system, flowing one or more of a hydrogen, germanium, boron, or carbon containing precursor into the processing chamber, and optionally flowing a nitrogen containing precursor into the processing chamber.
摘要:
Embodiments of the invention generally provide a method for depositing films using photoexcitation. The photoexcitation may be utilized for at least one of treating the substrate prior to deposition, treating substrate and/or gases during deposition, treating a deposited film, or for enhancing chamber cleaning. In one embodiment, a method for depositing silicon and nitrogen-containing film on a substrate includes heating a substrate disposed in a processing chamber, generating a beam of energy of between about 1 to about 10 eV, transferring the energy to a surface of the substrate; flowing a nitrogen-containing chemical into the processing chamber, flowing a silicon-containing chemical with silicon-nitrogen bonds into the processing chamber, and depositing a silicon and nitrogen-containing film on the substrate.
摘要:
Apparatus, reactors, and methods for heating substrates are disclosed. The apparatus comprises a stage comprising a body and a surface having an area to support a substrate, a shaft coupled to the stage, a first heating element disposed within a central region of the body of the stage, and at least second and third heating elements disposed within the body of the stage, the at least second and third heating elements each partially surrounding the first heating element and wherein the at least second and third heating elements are circumferentially adjacent to each other.