Abstract:
A semiconductor device comprises a base substrate, a pattern on the base substrate, a buffer layer on the base substrate, and an epitaxial layer on the buffer. The pattern is a self-assembled pattern. A method for growing a semiconductor crystal comprises cleaning a silicon carbide substrate, forming a self-assembled pattern on the silicon carbide substrate, forming a buffer layer on the silicon carbide substrate, and forming an epitaxial layer on the buffer layer. A semiconductor device comprises a base substrate comprising a pattern groove and an epitaxial layer on the base substrate. A method for growing a semiconductor crystal comprises cleaning a silicon carbide substrate, forming a self-assembled projection on the silicon carbide substrate, forming a pattern groove in the silicon carbide, and forming an epitaxial layer on the silicon carbide.
Abstract:
A silicon carbide powder according to the embodiment includes nitrogen having a concentration in a range of about 100 ppm to about 5000 ppm. A method for manufacturing silicon carbide powder according to the embodiment includes preparing a mixture by mixing a silicon source including silicon with a solid carbon source or a carbon source including an organic carbon compound; heating the mixture; cooling the mixture; and supplying a nitrogen-based gas into the mixture.
Abstract:
The present invention relates to an apparatus for fabricating ingot including a crucible to accommodate a material, a top cover enclosing the circumference of the temperature difference compensative part, and a heat insulator to be disposed on the top cover.
Abstract:
Disclosed is an apparatus for fabricating an ingot. The apparatus includes a crucible to receive a raw material, and a filter part to allow a specific component in the crucible to selectively pass through the filter part. The raw material includes silicon and carbon.
Abstract:
Disclosed are an apparatus and a method for fabricating an ingot. The apparatus for fabricating an ingot includes a crucible receiving a raw material, a holder fixing a seed provided on the raw material, and an adhesive layer interposed between the holder and the seed while adhering to the seed. The adhesive layer includes a main adhesive layer adhering to the seed, and adhesion enhancing particles dispersed in the main adhesive layer. Meanwhile, the apparatus for fabricating an ingot includes a crucible receiving a raw material, and a seed holder fixing a seed on the raw material, in which a buffer layer is formed on the seed holder.
Abstract:
Disclosed are silicon carbide powders and a method of preparing the same. The method includes forming a mixture by mixing a silicon (Si) source, a carbon (C) source, and a silicon carbide (SiC) seed, and reacting the mixture. The silicon carbide (SiC) powders include silicon carbide (SiC) grains having a β-type crystal phase and a grain size in a range of about 5㎛ to about 100㎛.
Abstract:
Disclosed are an apparatus for fabricating an ingot and a method for fabricating the ingot. The apparatus comprises a crucible to receive a source material, and a guide member over the source material. The guide member comprises a source material feeding part.
Abstract:
A raw material for growing an ingot according to the embodiment comprises an agglomerate raw material in which fine particles are agglomerated, wherein the agglomerate raw material has a granular shape. A method for fabricating a raw material for growing an ingot according to the embodiment comprises the steps of: preparing an ultrahigh-purity powder; and granulating the ultrahigh-purity powder. A method for fabricating an ingot according to the embodiment comprises the steps of: preparing a raw material; filling the raw material in a crucible; and growing a single crystal from the raw material, wherein the raw material comprises an agglomerate raw material in which fine particles are agglomerated, and the agglomerate raw material has a granular shape.
Abstract:
Disclosed is an apparatus for attaching a seed. The apparatus for attaching the seed includes a holder fixing part to fix a seed holder; a pressing part to apply a pressure to the seed holder; and a seed fixing part provided under the seed holder to fix the seed.
Abstract:
Provided is an ingot fabricating apparatus, which includes a crucible and an upper cover. The crucible accommodates a source material. The upper cover is disposed over the source material. The upper cover includes a seed crystal fixing unit fixing a seed crystal, and a guide part guiding the seed crystal fixing unit.