Abstract:
A system for the production of a polycrystalline silicon product is disclosed. The system includes a reaction chamber, a susceptor, an induction unit, and a plurality of energy sources. The reaction chamber has a reactor wall, and the susceptor encircles the reactor wall. The induction heater surrounds the susceptor, and has multiple induction coils for producing heat in the susceptor. The coils are grouped into a plurality of zones. The plurality of energy sources supply electric current to the coils. Each energy source is connected with the coils of at least one zone.
Abstract:
A method of bonding a first silica part to a second silica part includes coating contacting surfaces of the first and second silica parts with a solution having one of silica and silica precursors. The coated surfaces of the first silica part are placed adjacent to the coated surfaces of the second silica part to form an assembly, and the assembly is heated, a crucible for use in directional solidification of multicrystalline ingots comprising a base, a sidewall and a weir, a system for growing a single crystal ingot comprising a crucible having a base, a sidewall, a weir, a heater and a feed tube, and a method for growing a single crystal ingot from a crucible havng a base and a sidewall and a weir comprising placing a feedstock material into the crucible, melting the feedstock material, lowering a seed cyrstal into the melt and pulling the seed crystal from the melt to pull an ingot.
Abstract:
A method for reducing light point defects of a semiconductor-on-insulator structure and a method for reducing the surface roughness of a semiconductor-on-insulator structure are disclosed. The methods can include a combination of thermally annealing the structure followed by a non-contact smoothing process.
Abstract:
Apparatus and processes for preparing heterostructures with reduced strain are disclosed. The heterostructures may include a semiconductor structure that conforms to a surface layer having a different crystal lattice constant than the structure to form a relatively low-defect heterostructure.
Abstract:
Apparatus and processes for preparing heterostructures with reduced strain are disclosed. The heterostructures may include a semiconductor structure that conforms to a surface layer having a different crystal lattice constant than the structure to form a relatively low-defect heterostructure.
Abstract:
A method is provided for cleaning a surface of a semiconductor wafer comprising: (a) contacting the front surface of the wafer with a slurry comprising an abrasive agent and a polymeric rheological modifier; (b) contacting the front surface of the semiconductor wafer with an oxidant; and (c) irradiating the front surface of the semiconductor wafer with ultraviolet light.
Abstract:
Systems and methods for forming an ingot from a melt are disclosed. A system includes a crucible defining a cavity for receiving the melt, and a first and second barrier to inhibit movement of the melt. A first passageway and a second passageway are arranged to allow the melt located within an outer zone to move into and through a transition zone and into an inner zone. Conditioning members are placed in at least one of the zones and arranged to contact the melt to reduce the number of micro-voids in the melt.
Abstract:
Production of silicon ingots in a crystal puller that involve reduction in the formation of silicon deposits on the puller exhaust system are disclosed.
Abstract:
A solar assembly (200) includes a solar module (100) including a solar laminate (102) mounted within a frame (104) that circumscribes the solar laminate. The solar assembly also includes a mount (202) supporting the solar module including a first end and an opposing second end, wherein the first end is attached to the solar module. The solar assembly further includes a structural adhesive compound (210) and a mounting surface (230). The structural adhesive compound is positioned between the mount second end and the mounting surface to facilitate bonding the mount to the mounting surface.
Abstract:
Methods for producing aluminum trifluoride by acid digestion of fluoride salts of alkali metal or alkaline earth metal and aluminum, optionally, in the presence of a source of silicon; methods for producing silane that include acid digestion of by-products of silane production to produce aluminum trifluoride.