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Patent
ASM Microchemistry Oy | Date: 2016-09-12

Compositions, methods, and systems permit selectively etching metal oxide from reactor metal parts (e.g., titanium and/or titanium alloys). The etching composition comprises an alkali metal hydroxide and gallic acid. The method is useful for cleaning reaction chambers used in the deposition of metal oxide films such as aluminum oxide.


Patent
ASM Microchemistry Oy | Date: 2016-04-06

An atomic deposition (ALD) thin film deposition apparatus includes a deposition chamber configured to deposit a thin film on a wafer mounted within a space defined therein. The deposition chamber comprises a gas inlet that is in communication with the space. A gas system is configured to deliver gas to the gas inlet of the deposition chamber. At least a portion of the gas system is positioned above the deposition chamber. The gas system includes a mixer configured to mix a plurality of gas streams. A transfer member is in fluid communication with the mixer and the gas inlet. The transfer member comprising a pair of horizontally divergent walls configured to spread the gas in a horizontal direction before entering the gas inlet.


Patent
ASM Microchemistry Oy | Date: 2014-07-30

A self-centering susceptor ring assembly is provided. The susceptor ring assembly includes a susceptor ring support member and a susceptor ring supported on the susceptor ring support member. The susceptor ring support member includes at least three pins extending upwardly relative to the lower inner surface of the reaction chamber. The susceptor ring includes at least three detents formed in a bottom surface to receive the pins from the susceptor ring support member. The detents are configured to allow the pins to slide therewithin while the susceptor ring thermally expands and contracts, wherein the detents are sized and shaped such that as the susceptor ring thermally expands and contracts the gap between the susceptor ring and the susceptor located within the aperture of the susceptor ring remains substantially uniform about the entire circumference of the susceptor, and thereby maintains the same center axis.


Patent
ASM Microchemistry Oy | Date: 2015-03-17

Embodiments related to managing the process feed conditions for a semiconductor process module are provided. In one example, a gas channel plate for a semiconductor process module is provided. The example gas channel plate includes a heat exchange surface including a plurality of heat exchange structures separated from one another by intervening gaps. The example gas channel plate also includes a heat exchange fluid director plate support surface for supporting a heat exchange fluid director plate above the plurality of heat exchange structures so that at least a portion of the plurality of heat exchange structures are spaced from the heat exchange fluid director plate.


Patent
ASM Microchemistry Oy | Date: 2013-03-04

Sn-containing precursors for deposition of Sn-containing films and methods of using are provided herein. In some embodiments, Sn-containing precursors are methylated and/or hydrogenated and/or deuteriated. In some embodiments, methods of chemical vapor deposition are provided.


Patent
ASM Microchemistry Oy | Date: 2013-02-06

An improved thermocouple assembly for providing a temperature measurement is provided. The thermocouple assembly includes a sheath having a measuring tip, a support member received within the sheath, and first and second wires disposed within the support member. An end of each of the first and second wires are fused together to form a thermocouple junction therebetween. A recessed region is formed in a distal end of the support member, and the thermocouple junction is fixedly located at the base of the recessed region such that the recessed region maintains the thermocouple junction in a substantially fixed position relative to the measuring tip of the sheath.


Patent
ASM Microchemistry Oy | Date: 2014-04-03

A gas panel according to various aspects of the present invention is configured to deliver a constant flow rate of gases to a reaction chamber during a deposition process step. In one embodiment, the gas panel comprises a deposition sub-panel having a deposition injection line, a deposition vent line, and at least one deposition process gas line. The deposition injection line supplies a mass flow rate of a carrier gas to a reactor chamber. Each deposition process gas line may include a pair of switching valves that are configured to selectively direct a deposition process gas to the reactor chamber or a vent line. The deposition vent line also includes a switching valve configured to selectively direct a second mass flow rate of the carrier gas that is equal to the sum of the mass flow rate for all of the deposition process gases to the reactor chamber or a vent line. The gas panel is configured to substitute the mass flow rate of the deposition vent line with the mass flow rate of the deposition process lines, such that when the deposition vent line is directed to the reactor chamber the deposition process lines are directed to the vent line and when the deposition vent line is directed to the vent line the deposition process lines are directed to the reactor chamber. The substitution of the two mass flow rates maintains a constant mass flow rate of gases to the reactor chamber throughout the deposition process step.


Patent
ASM Microchemistry Oy | Date: 2013-05-08

A load lock includes a chamber including an upper portion, a lower portion, and a partition between the upper portion and the lower portion, the partition including an opening therethrough. The load lock further includes a first port in communication with the upper portion of the chamber and a second port in communication with the lower portion of the chamber. The load lock includes a rack disposed within the chamber and a workpiece holder mounted on a first surface of the rack, wherein the rack and the workpiece holder are movable by an indexer that is capable of selectively moving wafer slots of the rack into communication with the second port. The indexer can also move the rack into an uppermost position, at which the first surface of the boat and the partition sealingly separate the upper portion and the lower portion to define an upper chamber and a lower chamber. Auxiliary processing, such as wafer pre-cleaning, or metrology can be conducted in the upper portion.


Patent
ASM Microchemistry Oy | Date: 2016-06-08

A device for performing ALD includes a housing having a vacuum chamber that surrounds a horizontal flow reactor. The device further includes a gas distribution system for delivering gases to the reactor. The gas distribution system includes at least one of a high temperature valve and a high temperature filter disposed inside the vacuum chamber. The high temperature valve (and/or filter) controls (and/or filters) a supply of a precursor/reactant gas, inert gas, or precursor/reactant and inert gas mixture before it enters the horizontal flow reactor.


Methods of forming metal carbide films are provided. In some embodiments, a substrate is exposed to alternating pulses of a transition metal species and an aluminum hydrocarbon compound, such as TMA, DMAH, or TEA. The aluminum hydrocarbon compound is selected to achieve the desired properties of the metal carbide film, such as aluminum concentration, resistivity, adhesion and oxidation resistance. In some embodiments, the methods are used to form a metal carbide layer that determines the work function of a control gate in a flash memory.

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