摘要:
Methods for depositing germanium-containing layers on silicon-containing layers are provided herein. In some embodiments, a method may include depositing a first layer atop an upper surface of the silicon-containing layer, wherein the first layer comprises predominantly germanium (Ge) and further comprises a lattice adjustment element having a concentration selected to enhance electrical activity of dopant elements, wherein the dopant elements are disposed in at least one of the first layer or in an optional second layer deposited atop of the first layer, wherein the optional second layer, if present, comprises predominantly germanium (Ge). In some embodiments, the second layer is deposited atop the first layer. In some embodiments, the second layer comprises germanium (Ge) and dopant elements.
摘要:
Methods and apparatus for providing constant emissivity of the backside of susceptors are described. Provided is a method comprising: providing a susceptor in a deposition chamber, the susceptor comprising a susceptor plate and a layer comprising an oxide, a nitride, an oxynitride, or combinations thereof, the layer being stable in the presence of the reactive process gases; and locating the wafer on a support surface of the susceptor plate. The method can further comprise selectively depositing an epitaxial layer or a non-epitaxial layer on a surface of the wafer. The method can also further comprise selectively etching to maintain the oxide, nitride, oxynitride, or combinations thereof layer.
摘要:
Methods and apparatus for providing constant emissivity of the backside of susceptors are described. Provided is a method comprising: providing a susceptor in a deposition chamber, the susceptor comprising a susceptor plate and a layer comprising an oxide, a nitride, an oxynitride, or combinations thereof, the layer being stable in the presence of the reactive process gases; and locating the wafer on a support surface of the susceptor plate. The method can further comprise selectively depositing an epitaxial layer or a non-epitaxial layer on a surface of the wafer. The method can also further comprise selectively etching to maintain the oxide, nitride, oxynitride, or combinations thereof layer.
摘要:
Methods and apparatus for providing constant emissivity of the backside of susceptors are provided. Provided is a susceptor comprising: a susceptor plate having a surface for supporting a wafer and a backside surface opposite the wafer supporting surface; a layer comprising an oxide, a nitride, an oxynitride, or combinations thereof located on the backside surface of the susceptor plate, the layer being stable in the presence of a reactive process gas. The layer comprises, for example, silicon dioxide, silicon nitride, silicon oxynitride, or combinations thereof. Also provided is a method comprising: providing a susceptor in a deposition chamber, the susceptor comprising a susceptor plate and a layer comprising an oxide, a nitride, an oxynitride, or combinations thereof, the layer being stable in the presence of the reactive process gases; locating the wafer on a support surface of the susceptor plate. The method can further comprises selectively depositing an epitaxial layer or a non-epitaxial layer on a surface of the wafer. The method further comprises selectively etching to maintain the oxide, nitride, oxynitride, or combinations thereof layer.
摘要:
A method of forming a polycrystalline silicon film comprising: providing a process gas mix comprising a silicon source gas and a dilution gas mix wherein the dilution gas mix comprises H2 and an inert gas; and forming a polycrystalline silicon film from said silicon source gas.
摘要:
Methods and apparatus for providing constant emissivity of the backside of susceptors are provided. Provided is a susceptor comprising: a susceptor plate having a surface for supporting a wafer and a backside surface opposite the wafer supporting surface; a layer comprising an oxide, a nitride, an oxynitride, or combinations thereof located on the backside surface of the susceptor plate, the layer being stable in the presence of a reactive process gas. The layer comprises, for example, silicon dioxide, silicon nitride, silicon oxynitride, or combinations thereof. Also provided is a method comprising: providing a susceptor in a deposition chamber, the susceptor comprising a susceptor plate and a layer comprising an oxide, a nitride, an oxynitride, or combinations thereof, the layer being stable in the presence of the reactive process gases; locating the wafer on a support surface of the susceptor plate. The method can further comprises selectively depositing an epitaxial layer or a non-epitaxial layer on a surface of the wafer. The method further comprises selectively etching to maintain the oxide, nitride, oxynitride, or combinations thereof layer.
摘要:
In one embodiment, a method for forming a silicon-based material on a substrate having dielectric materials and source/drain regions thereon within a process chamber is provided which includes exposing the substrate to a first process gas comprising silane, methylsilane, a first etchant, and hydrogen gas to deposit a first silicon-containing layer thereon. The first silicon-containing layer may be selectively deposited on the source/drain regions of the substrate while the first silicon-containing layer may be etched away on the surface of the dielectric materials of the substrate. Subsequently, the process further provides exposing the substrate to a second process gas comprising dichlorosilane and a second etchant to deposit a second silicon-containing layer selectively over the surface of the first silicon-containing layer on the substrate.
摘要:
In one embodiment, a method for fabricating a silicon-based device on a substrate surface is provided which includes depositing a first silicon-containing layer by exposing the substrate surface to a first process gas comprising Cl2SiH2, a germanium source, a first etchant and a carrier gas and depositing a second silicon-containing layer by exposing the first silicon-containing layer to a second process gas comprising SiH4 and a second etchant. In another embodiment, a method for depositing a silicon-containing material on a substrate surface is provided which includes depositing a first silicon-containing layer on the substrate surface with a first germanium concentration of about 15 at % or more. The method further provides depositing on the first silicon-containing layer a second silicon-containing layer wherein a second germanium concentration of about 15 at % or less, exposing the substrate surface to air to form a native oxide layer, removing the native oxide layer to expose the second silicon-containing layer, and depositing a third silicon-containing layer on the second silicon-containing layer. In another embodiment, a method for depositing a silicon-containing material on a substrate surface is provided which includes depositing epitaxially a first silicon-containing layer on the substrate surface with a first lattice strain, and depositing epitaxially on the first silicon-containing layer a second silicon-containing layer with a second lattice strain greater than the first lattice strain.
摘要:
Embodiments of methods for depositing silicon germanium (SiGe) layers on a substrate are disclosed herein. In some embodiments, the method may include depositing a first layer comprising silicon and germanium (e.g., a seed layer) atop the substrate using a first precursor comprising silicon and chlorine; and depositing a second layer comprising silicon and germanium (e.g., a bulk layer) atop the silicon germanium seed layer using a second precursor comprising silicon and hydrogen. In some embodiments, the first silicon precursor gas may comprise at least one of dichlorosilane (H2SiCl2), trichlorosilane (HSiCl3), or silicon tetrachloride (SiCl4). In some embodiments, the second silicon precursor gas may comprise at least one of silane (SiH4), or disilane (Si2H6).
摘要:
Methods and apparatus for processing a substrate are provided herein. In some embodiments, a method of processing a substrate may include providing a substrate having at least one of a defect or a contaminant disposed on or near a surface of the substrate; and selectively annealing a portion of the substrate with a laser beam in the presence of a process gas comprising hydrogen. The laser beam may be moved over the substrate or continuously, or in a stepwise fashion. The laser beam may be applied in a continuous wave or pulsed mode. The process gas may further comprise an inert gas, such as, at least one of helium, argon, or nitrogen. A layer of material may be subsequently deposited atop the annealed substrate.