Vorrichtung zur Herstellung multikristalliner Halbleiter-Bloecke mit kolumnarer Kristallstruktur

In a device for the production of multicrystalline semiconductor blocks having a columnar structure, the mould in which molten material is filled and which is made to solidify by dissipating heat, is designed so that the side walls of the mould are thermally insulated from the bottom part. This prevents a direct dissipation of heat via the side walls of the mould to the bottom part. The mould is preferably heated by a heating source which transfers a higher thermal power density to the end phases of the side walls of form than to the aperture of the mould. Blocks consisting of semiconductor materials such as silicon, which are produced using this device, have enhanced material characteristics.