Heliotronic Forschungs- Und Entwicklungsgesellschaft Fur

Heliotronic Forschungs- Und Entwicklungsgesellschaft Fur Solarzellen-Grundstoffe M.b.h.

Priewasser, Georg

Schmidhammer, Leonhard

Zauhar, Helmut

Helmreich, Dieter

Gessert, Cord

Miller, Hans-Dieter

Hans-Dieter Miller

Dieter Helmreich

Josef Dietl

Erhard Sirtl

Helmut Zauhar

Georg Priewasser

Cord Gessert

Gerhard Ast

Leonhard Schmidhammer

A process and apparatus for the manufacture of silicon blocks having a columnar structure comprising monocrystalline crystal zones having a crystallographic preferred orientation. In a casting process, each mold filled with molten silicon is transferred, before the silicon has solidified completely, to a separate crystallization station where the silicon can then crystallize completely. During this process, the exposed surface of the silicon is maintained in a molten state until the end of the solidification process has almost been reached. The process allows the various, necessary steps to be carried out simultaneously and yields high-quality solar cell base material.

Process and apparatus for the cyclical manufacture of silicon shaped

Competitive current generation by the exploitation of solar energy requires cheap solar cells. A process is described which makes it possible to manufacture from silicon a base material for solar cells of this type in an economical manner and in large quantities. This is achieved by bringing silicon from a supply container into contact with a non-elemental lubricating melt, which is immiscible with silicon but will not wet silicon and has a melting point below that of silicon, and by drawing off a silicon film, sliding on this lubricating melt, and solidifying the silicon continuously by cooling to below its' melting point.

Process for making solar cell base material

Growing community of inventors

Stammham, Germany

Hans-Dieter Miller