Helictronic Forschungs- Und Entwicklungs- Gesellschaft Fur

Theo Zollner

Erhard Sirtl

Dieter Helmreich

To make solar energy competitive, as compared against other sources of energy, inexpensive solar cells are required. To accomplish this goal, a method is provided which enables one to produce silicon rods having a columnar structure made of monocrystalline zones with preferential crystallographic orientation. This is effected by feeding a silicon melt into a crystallization chamber having a vertically movable cooled bottom face under the influence of a temperature gradient directed parallel to the rod axis, so that the rods can be made continuously or semicontinuously with high drawing speeds.

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Burghausen, Germany

Theo Zollner