Solarworld Innovations Gmbh

Lamine Sylla

Andreas Krause

Juliane Walter

Alexander Fulle

Within the scope of a Silicon-wafer making, in which a silicon monocrystal seed is arranged in the bottom region of a crucible, wherein the silicon monocrystal seed has a seed surface with a {110}-crystal orientation parallel to the bottom region of the crucible, in which liquid high-purity silicon is solidified, starting from the seed surface of the silicon monocrystal seed, and in which the silicon block is split into Silicon-wafers in such a manner that a wafer surface has a {100}-crystal orientation, wherein the silicon monocrystal seed is manufactured from a silicon monocrystal block, the block axis of which has a [110]-spatial orientation, wherein the silicon monocrystal block is cut-off for forming the seed surface of the silicon monocrystal seed with the {110}-crystal orientation parallel to the block axis.

Method for manufacturing a silicon monocrystal seed and a silicon-wafer, silicon-wafer and silicon solar-cell

The invention relates to a method for examining a wire-sawn silicon substrate for a solar cell. The method includes irradiating the silicon substrate with an infrared radiation, detecting the infrared radiation transmitted through the silicon substrate, and analyzing the detected infrared radiation for characterizing the crystal orientation of the silicon substrate. The invention in addition relates to a device for carrying out such a method, and a method for manufacturing a solar cell.

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Dresden, Germany

Lamine Sylla