Abstract:
Methods for depositing a molybdenum metal film over a dielectric surface of a substrate by a cyclical deposition process are disclosed. The methods may include: providing a substrate comprising a dielectric surface into a reaction chamber; depositing a nucleation film directly on the dielectric surface; and depositing a molybdenum metal film directly on the nucleation film, wherein depositing the molybdenum metal film includes: contacting the substrate with a first vapor phase reactant comprising a molybdenum halide precursor; and contacting the substrate with a second vapor phase reactant comprising a reducing agent precursor. Semiconductor device structures including a molybdenum metal film disposed over a surface of a dielectric material with an intermediate nucleation film are also disclosed.
Abstract:
Methods are provided for selectively depositing Al and N containing material on a first conductive surface of a substrate relative to a second, dielectric surface of the same substrate. In some aspects, methods of forming an Al and N containing protective layer or etch stop layer for use in integrated circuit fabrication are provided.
Abstract:
In some embodiments, a compound semiconductor is formed by diffusion of semiconductor species from a source semiconductor layer into semiconductor material in a substrate. The source semiconductor layer may be an amorphous or polycrystalline structure, and provides a source of semiconductor species for later diffusion into the other semiconductor material. Advantageously, such a semiconductor layer may be more conformal than an epitaxially grown, crystalline semiconductor layer. As a result, this more conformal semiconductor layer acts as a uniform source of the semiconductor species for diffusion into the semiconductor material in the substrate. In some embodiments, an interlayer is formed between the source semiconductor layer and the substrate, and then the interlayer is trimmed before depositing the source semiconductor layer. In some other embodiments, the source semiconductor layer is deposited directly on the substrate, and has an amorphous or polycrystalline structure.
Abstract:
A semiconductor device and method for manufacturing the semiconductor device are disclosed. Specifically, the semiconductor device may include a charge trapping layer with improved retention and speed for VNAND applications. The charge trapping layer may comprise an aluminum nitride (AlN) or aluminum oxynitride (AlON) layer.
Abstract:
Methods for forming a semiconductor device and related semiconductor device structures are provided. In some embodiments, methods may include forming an NMOS gate dielectric and a PMOS gate dielectric over a substrate and forming a first work function metal over the NMOS gate dielectric and over the PMOS gate dielectric. In some embodiments, methods may also include, removing the first work function metal over the NMOS gate dielectric and forming a second work function metal over the NMOS gate dielectric and over the PMOS gate dielectric. In some embodiments, related semiconductor device structures may include an NMOS gate dielectric and a PMOS gate dielectric disposed over a semiconductor substrate. A PMOS gate electrode may be disposed over the PMOS gate dielectric and the PMOS gate electrode may include a first work function metal disposed over the PMOS gate dielectric and a second work function metal disposed over the first work function metal. A NMOS gate electrode may be disposed over the NMOS gate dielectric and the NMOS gate electrode may include the second work function metal.
Abstract:
A method for forming layers suitable for a V-NAND stack is disclosed. Specifically, the method may include multiple cycles for forming an oxide and a nitride in order to form an oxynitride layer.
Abstract:
In some aspects, methods of forming a metal chalcogenide thin film are provided. According to some methods, a metal chalcogenide thin film is deposited on a substrate in a reaction space in a cyclical deposition process where at least one cycle includes alternately and sequentially contacting the substrate with a first vapor-phase metal reactant and a second vapor-phase chalcogen reactant. In some aspects, methods of forming three-dimensional structure on a substrate surface are provided. In some embodiments, the method includes forming a metal chalcogenide dielectric layer between a substrate and a conductive layer. In some embodiments the method includes forming an MIS-type contact structure including a metal chalcogenide dielectric layer.
Abstract:
Improved methods and systems for passivating a surface of a high-mobility semiconductor and structures and devices formed using the methods are disclosed. The method includes providing a high-mobility semiconductor surface to a chamber of a reactor and exposing the high-mobility semiconductor surface to a gas-phase sulfur precursor to passivate the high-mobility semiconductor surface.
Abstract:
Improved methods and systems for passivating a surface of a high-mobility semiconductor and structures and devices formed using the methods are disclosed. The method includes providing a high-mobility semiconductor surface to a chamber of a reactor and exposing the high-mobility semiconductor surface to a gas-phase chalcogen precursor to passivate the high-mobility semiconductor surface.
Abstract:
Improved methods and systems for passivating a surface of a high-mobility semiconductor and structures and devices formed using the methods are disclosed. The method includes providing a high-mobility semiconductor surface to a chamber of a reactor and exposing the high-mobility semiconductor surface to a gas-phase sulfur precursor to passivate the high-mobility semiconductor surface.