摘要:
A plasma etch method for etching a dielectric layer and an etch stop layer to reach a metal silicide layer formed thereunder employs for etching the etch stop layer an etchant gas composition comprising a fluorine containing gas and a nitrogen containing gas, preferably with a carrier gas such as argon or helium, but without an oxygen containing gas or a carbon and oxygen containing gas. The plasma etch method is selective for the etch stop layer with respect to the metal silicide layer, thus maintaining the physical and electrical integrity of the metal silicide layer.
摘要:
A method for semiconductor device feature development using a bi-layer photoresist including providing a non-silicon containing photoresist layer over a substrate; providing a silicon containing photoresist over the non-silicon containing photoresist layer; exposing said silicon containing photoresist layer to an activating light source an exposure surface defined by an overlying pattern according to a photolithographic process; developing said silicon containing photoresist layer according to a photolithographic process to reveal a portion the non-silicon containing photoresist layer; and, dry developing said non-silicon containing photoresist layer in a plasma reactor by igniting a plasma from an ambient mixture including at least oxygen, carbon monoxide, and argon.
摘要:
Methods and structures for forming a contact hole structure are disclosed. These methods first form a substantially silicon-free material layer over a substrate. A material layer is formed over the substantially silicon-free material layer. A contact hole is formed within the substantially silicon-free material layer and the material layer without substantially damaging the substrate. In addition, a conductive layer is formed in the contact hole so as to form a contact structure.
摘要:
A method of manufacturing a semiconductor device is provided. A nickel silicide layer (e.g., NiSi) is formed on a substrate. Next, a hydrogen plasma treatment may be performed on the silicide layer, which may induce the formation of metal/silicon hydride bonds in the silicide layer. An etch stop layer is formed over the silicide layer. A dielectric layer is formed over the etch stop layer. An opening is formed in the dielectric layer. A portion of the etch stop layer is etched away at the opening to expose at least a portion of the silicide layer therebeneath. The etch chemistry mixture used during the etching step preferably includes hydrogen gas. The change in sheet resistance for the exposed silicide layer portion at the opening after the etching step, as compared to before the etching step, is preferably not greater than about 0.10 ohms/square.
摘要:
A method and system for determining the dielectric constant of a low-k dielectric film on a production substrate include measuring the electronic component of the dielectric constant using an ellipsometer, measuring the ionic component of the dielectric constant using an IR spectrometer, measuring the overall dielectric constant using a microwave spectrometer and deriving the dipolar component of the dielectric constant. The measurements and determination are non-contact and may be carried out on a production device that is further processed following the measurements.
摘要:
A method and system for determining the dielectric constant of a low-k dielectric film on a production substrate include measuring the electronic component of the dielectric constant using an ellipsometer, measuring the ionic component of the dielectric constant using an IR spectrometer, measuring the overall dielectric constant using a microwave spectrometer and deriving the dipolar component of the dielectric constant. The measurements and determination are non-contact and may be carried out on a production device that is further processed following the measurements.
摘要:
Methods and structures for forming a contact hole structure are disclosed. These methods first form a substantially silicon-free material layer over a substrate. A material layer is formed over the substantially silicon-free material layer. A contact hole is formed within the substantially silicon-free material layer and the material layer without substantially damaging the substrate. In addition, a conductive layer is formed in the contact hole so as to form a contact structure.
摘要:
A method of manufacturing a semiconductor device is provided. A semiconductor element is formed on a substrate. The semiconductor element has at least one nickel silicide contact region, an etch stop layer formed over said element, and an insulating layer formed over said etch stop layer. A portion of the etch stop layer immediately over a selected contact region is removed using a process that does not substantially react with the contact region, to form a contact opening. The contact opening is then filled with a conductive material to form a contact.
摘要:
A method for dry etching a dielectric layer including providing a substrate; forming at least one overlying dielectric layer over the substrate; subjecting the at least one overlying layer to a plasma oxidizing process; and, subjecting the at least one overlying layer to a plasma etching process.
摘要:
An integrated advanced method for forming a semiconductor device utilizes a sacrificial stress layer as part of a film stack that enables spatially selective silicide formation in the device. The low-resistance portion of the device to be silicided includes NMOS transistors and PMOS transistors. The stressed film may be a tensile or compressive nitride film. An annealing process is carried out prior to the silicide formation process. During the annealing process, the stressed nitride film preferentially remains over either the NMOS transistors or PMOS transistors, but not both, to optimize device performance. A tensile nitride film remains over the NMOS transistors but not the PMOS transistors while a compressive nitride film remains over the PMOS transistors but not the NMOS transistors, during anneal.