An apparatus for realizing sustained anisotropic crystal growth on the surface of silicon melt

摘要

An apparatus for growing a crystal sheet from a melt includes a cold block assembly. The cold block assembly may include a cold block and a shield surrounding the cold block and being hot relative to the temperature of the cold block, the shield being along the surface of the cold block proximate to the melt surface. An opening arranged in a region, the opening defining a cold region with a width along the first direction of the cold block, the cold region being a local area of the area of the melt surface proximate to the cold block It is operable to provide cooling. The apparatus further includes a crystal puller configured to pull the crystal seed in a direction orthogonal to the first direction when the cold block assembly is positioned proximate to the melt surface.