Apparatus for producing polycrystalline silicon sheets and production method using the same

An apparatus for producing a polycrystalline silicon sheet, the apparatus comprising:

• a crucible;
• a heating unit for heating a starting material comprising silicon in the crucible;
• and
• a cooling unit for contacting a melt of the starting material melted by heating to a cooling face of a cooling member, thereby obtaining a polycrystalline silicon sheet in which crystals of silicon are grown,
• wherein the cooling face of the cooling member has a sheet adhering portion for providing a silicon starting point of crystallization and allowing adhesion of the polycrystalline silicon sheet of grown crystals and a sheet stripping portion for allowing easy stripping of the polycrystalline silicon sheet, and wherein the sheet stripping portion occupies more of the area of the cooling face than does the sheet adhering portion.

An apparatus for producing a polycrystalline silicon sheet, the apparatus comprising:

• a crucible;
• a heating unit for heating a starting material comprising silicon in the crucible;
• a cooling unit for contacting a melt of the starting material melted by heating to a cooling face of a cooling member, thereby obtaining a polycrystalline silicon sheet in which crystals of silicon are grown,
• wherein the cooling face of the cooling member has a sheet adhering portion for providing a silicon starting point of crystallization and allowing adhesion of the polycrystalline silicon sheet of grown crystals and a sheet stripping portion for allowing easy stripping of the polycrystalline silicon sheet, and
• wherein the sheet adhering portion comprises dots of a ceramic arranged on the cooling face.