摘要:
A vapor phase growth apparatus according to one embodiment includes a reaction chamber, a storage container storing organic metal, a thermostatic bath storing a liquid with a temperature higher than a room temperature and holding the storage container immersed in the liquid, a carrier gas supply path connected to the storage container and supplying a carrier gas to the storage container, an organic-metal-containing gas transportation path connected to the storage container and the reaction chamber, the organic-metal-containing gas transportation path transporting an organic-metal-containing gas to the reaction chamber, the organic-metal-containing gas including the organic metal generated by bubbling or sublimation with the carrier gas, and a diluent gas transportation path connected to the organic-metal-containing gas transportation path at a position below a liquid level of the liquid in the thermostatic bath and transporting a diluent gas for diluting the organic-metal-containing gas.
摘要:
A vapor phase growth apparatus according to an embodiment includes n reaction chambers, a main gas supply passage supplying a process gas to the n reaction chambers, a main mass flow controller arranged in the main gas supply passage to control a flow rate of the process gas flowing in the main gas supply passage, (n−1) first sub gas supply passages being branches of the main gas supply passage to supply divided process gases to the (n−1) reaction chambers among the n reaction chambers, (n−1) first sub mass flow controllers arranged in the first sub gas supply passages to control flow rates of the process gases flowing in the first sub gas supply passages, and one second sub gas supply passage being a branch of the main gas supply passage to supply a remainder of the process gas to the one reaction chamber other than the (n−1) reaction chambers.
摘要:
A semiconductor substrate according to embodiments includes a silicon substrate, a silicon nitride layer on the silicon substrate, the silicon nitride layer having a thickness of 1 nm or thicker, single-crystal aluminum nitride layer on the silicon nitride layer, and a single-crystal layer on the aluminum nitride layer, the single-crystal layer containing gallium (Ga).
摘要:
A vapor phase growth method according to embodiments uses a vapor phase growth apparatus including a reaction chamber, a transfer chamber, and a standby chamber. After a film containing gallium (Ga) is formed on a first substrate, a deposit adhering to a support is covered with a coating film or is removed. After that, an aluminum nitride film is formed successively on a plurality of substrates having a silicon (Si) surface, and the substrates are transferred into the standby chamber. Then, the substrates are transferred sequentially from the standby chamber into the reaction chamber, such that a film containing gallium (Ga) is formed successively on the substrates.
摘要:
A vapor phase growth apparatus of an embodiment includes: a reaction chamber; a shower plate disposed in the upper portion of the reaction chamber to supply a gas into the reaction chamber; and a support portion disposed below the shower plate inside the reaction chamber to place a substrate thereon. Then, the shower plate includes a plurality of first and second lateral gas passages disposed within different horizontal planes and first and second gas ejection holes connected to the first and second lateral gas passages. Further, the shower plate includes a center lateral gas passage that passes through a position directly above the rotation center of the support portion and third gas ejection holes connected to the center lateral gas passage. Then, the gases ejected from the first and second gas ejection holes and the center gas ejection holes are independently controllable.
摘要:
A shower head according to an embodiment includes: a mixing chamber mixing a plurality of process gases; a shower plate provided below the mixing chamber, the shower plate including a plurality of longitudinal flow paths and a lateral cooling flow path provided between the longitudinal flow paths, a mixed gas of the process gases flowing through the longitudinal flow paths, a cooling medium flowing through the lateral cooling flow path; and an outer circumferential portion cooling flow path provided around the shower plate.
摘要:
According to an aspect of the invention, there is provided a method for controlling a vapor phase growth apparatus, the vapor phase growth apparatus including a first reactor and a second reactor, a first substrate being processed in the first reactor, a second substrate being processed in the second reactor, the method including suppling a gas including a first source gas including organic metal, a second source gas including a group V element and a dilution gas to the first reactor and the second reactor at a predetermined flow rate, the first source gas, the second source gas and the dilution gas being supplied from gathered gas sources, respectively, rotating the first substrate and the second substrate at a predetermined rotational speed to form films, the method including: in the first reactor, supplying the first source gas, the second source gas and the dilution gas to form the films; in the second reactor, supplying the dilution gas without supplying the first source gas; and stopping forming the films.
摘要:
A vapor phase growth method using a vapor phase growth apparatus including a reaction chamber, a shower plate disposed in the upper portion of the reaction chamber so as to supply a gas into the reaction chamber, and a support portion provided below the shower plate inside the reaction chamber so as to place a substrate thereon, the method includes: placing the substrate on the support portion; heating the substrate; preparing a plurality of kinds of process gases for a film formation process; preparing a mixed gas by controlling mixing ratio between a first purging gas and a second purging gas, wherein the first purging gas and the second purging gas are selected from hydrogen and inert gases, a molecular weight of the first purging gas is smaller than an average molecular weight of the plurality of kinds of process gases and a molecular weight of the second purging gas is larger than the average molecular weight of the plurality of kinds of process gases, so that the average molecular weight of the mixed gas becomes closer to the average molecular weight of the plurality of kinds of process gases than molecular weight of the first purging gas or molecular weight of the second purging gas; ejecting the plurality of kinds of process gases from an inner area of the shower plate, and the mixed gas from an outer area of the shower plate; and forming a semiconductor film on the surface of the substrate.
摘要:
A vapor phase growth apparatus according to as embodiment includes n reaction chambers, a main gas supply path supplying a process gas to the n reaction chambers, a main mass flow controller controlling a flow rate of the process gas, a branch portion branching the main gas supply path, n sub gas supply paths branched from the main gas supply path at the branch portion, the n sub gas supply paths supplying branched process gases to the n reaction chambers, n first stop valves in the n sub gas supply paths between the branch portion and the n reaction chambers, distances from the n first stop valves to the branch portion are less than distances from the n first stop valves to the n reaction chambers, and n sub mass flow controllers in the n sub gas supply paths between the n first stop valves and the n reaction chambers.
摘要:
A vapor phase growth apparatus of an embodiment includes: a reaction chamber configured to perform a film formation process of nitride; a first gas supply path configured to supply a halogen-based gas; a second gas supply path configured to supply an ammonia gas; a shower plate disposed at the upper portion of the reaction chamber, the shower plate configured to supply the halogen-based gas and the ammonia gas into the reaction chamber, the shower plate having a first gas passage and a second gas passage in the shower plate, the first gas passage connected to the first gas supply path and the second gas passage connected to the second gas supply path, the second gas passage being separated from the first gas passage in the shower plate until the second gas passage reaches the reaction chamber; and a substrate provided inside the reaction chamber.