摘要:
Micropipe-free, single crystal, silicon carbide (SiC) and related methods of manufacture are disclosed. The SiC is grown by placing a source material and seed material on a seed holder in a reaction crucible of the sublimation system, wherein constituent components of the sublimation system including the source material, reaction crucible, and seed holder are substantially free from unintentional impurities. By controlling growth temperature, growth pressure, SiC sublimation flux and composition, and a temperature gradient between the source material and the seed material or the SiC crystal growing on the seed material during the PVT process, micropipe-inducing process instabilities are eliminated and micropipe-free SiC crystal is grown on the seed material.
摘要:
The present disclosure provides methods and apparatus that may be used to process microfeature workpieces, e.g., semiconductor wafers. Some aspects have particular utility in depositing TiN in a batch process. One implementation involves pretreating a surface of a process chamber by contemporaneously introducing first and second pretreatment precursors (e.g., TiCl4 and NH3) to deposit a pretreatment material on a the chamber surface. After the pretreatment, the first microfeature workpiece may be placed in the chamber and TiN may be deposited on the microfeature workpiece by alternately introducing quantities of first and second deposition precursors.
摘要:
The present disclosure describes apparatus and methods for processing microfeature workpieces, e.g., by depositing material on a microelectronic semiconductor using atomic layer deposition. Some of these apparatus include microfeature workpiece holders that include gas distributors. One exemplary implementation provides a microfeature workpiece holder adapted to hold a plurality of microfeature workpieces. This workpiece holder includes a plurality of workpiece supports and a gas distributor. The workpiece supports are adapted to support a plurality of microfeature workpieces in a spaced-apart relationship to define a process space adjacent a surface of each microfeature workpiece. The gas distributor includes an inlet and a plurality of outlets, with each of the outlets positioned to direct a flow of process gas into one of the process spaces.
摘要:
The invention includes a method of forming a semiconductor construction. A semiconductor substrate is provided, and a conductive node is formed to be supported by the semiconductor substrate. A first conductive material is formed over the conductive node and shaped as a container. The container has an opening extending therein and an upper surface proximate the opening. The container opening is at least partially filled with an insulative material. A second conductive material is formed over the at least partially filled container opening and physically against the upper surface of the container. The invention also includes semiconductor structures.
摘要:
A method of forming a plurality of capacitors includes providing a plurality of capacitor electrodes comprising sidewalls. The plurality of capacitor electrodes are supported at least in part with a retaining structure which engages the sidewalls, with the retaining structure comprising a fluid pervious material. A capacitor dielectric material is deposited over the capacitor electrodes through the fluid pervious material of the retaining structure effective to deposit capacitor dielectric material over portions of the sidewalls received below the retaining structure. Capacitor electrode material is deposited over the capacitor dielectric material through the fluid pervious material of the retaining structure effective to deposit capacitor electrode material over at least some of the capacitor dielectric material received below the retaining structure. Integrated circuitry independent of method of fabrication is also contemplated.
摘要:
A stabilized capacitor using non-oxide electrodes and high dielectric constant oxide dielectric materials and methods of making such capacitors and their incorporation into DRAM cells is provided. A preferred method includes providing a non-oxide electrode, oxidizing an upper surface of the non-oxide electrode, depositing a high dielectric constant oxide dielectric material on the oxidized surface of the non-oxide electrode, and depositing an upper layer electrode on the high dielectric constant oxide dielectric material.
摘要:
The invention includes methods in which metal oxide dielectric materials are deposited over barrier layers. The barrier layers can comprise compositions of metal and one or more of carbon, boron and nitrogen, and the metal oxide of the dielectric material can comprise the same metal as the barrier layer. The dielectric material/barrier layer constructions can be incorporated into capacitors. The capacitors can be used in, for example, DRAM cells, which in turn can be used in electronic systems.
摘要:
The invention comprises methods of forming a conductive contact to a source/drain region of a field effect transistor, and methods of forming local interconnects. In one implementation, a method of forming a conductive contact to a source/drain region of a field effect transistor includes providing gate dielectric material intermediate a transistor gate and a channel region of a field effect transistor. At least some of the gate dielectric material extends to be received over at least one source/drain region of the field effect transistor. The gate dielectric material received over the one source/drain region is exposed to conditions effective to change it from being electrically insulative to being electrically conductive and in conductive contact with the one source/drain region. Other aspects and implementations are contemplated.
摘要:
An atomic layer deposition method includes positioning a semiconductor substrate within an atomic layer deposition chamber. A first precursor gas is flowed to the substrate within the atomic layer deposition chamber effective to form a first monolayer on the substrate. After forming the first monolayer, a reactive intermediate gas is flowed to the substrate within the deposition chamber. The reactive intermediate gas is capable of reaction with an intermediate reaction by-product from the first precursor flowing under conditions of the reactive intermediate gas flowing. After flowing the reactive intermediate gas, a second precursor gas is flowed to the substrate within the deposition chamber effective to form a second monolayer on the first monolayer. Other aspects and implementations are contemplated.
摘要:
A method of compensating resistivity of a near-surface region of a substrate includes epitaxially growing a buffer layer on the substrate, wherein the buffer is grown as having a dopant concentration as dependent on resistivity and conductivity of the substrate, so as to deplete residual or excess charge within the near-surface region of the substrate. The dopant profile of the buffer layer be smoothly graded, or may consist of sub-layers of different dopant concentration, to also provide a highly resistive upper portion of the buffer layer ideal for subsequent device growth. Also, the buffer layer may be doped with carbon, and aluminum may be used to getter the carbon during epitaxial growth.