Solarworld Innovations Gmbh

Mark Hollatz

Bernhard Freudenberg

Andreas Krause

Armin Müller

Marc Dietrich

Josef Stenzenberger

Gerd Fischer

Robert Zacharias

Method for producing a silicon ingot, comprising the following steps: providing a container to receive a silicon melt, providing a temperature control device to control the temperature of the silicon melt in the container, arranging raw material in the container comprising silicon and at least one nucleation agent to assist a heterogeneous nucleation in the silicon melt, and control of the temperature in the container for the directed solidification of the silicon melt, the nucleation agent comprising nanoscale particles.

Method for producing a silicon ingot by solidification of a melt comprising a nucleation agent including nanoscale particles

A device for the production of silicon blocks comprises a vessel for receiving a silicon melt, the vessel comprising a vessel wall comprising at least one side wall and a bottom as well as an inside and an outside and a central longitudinal axis, and means for creating a temperature field on the inside of the bottom, the temperature field having a temperature gradient at the bottom of the vessel which is perpendicular to the central longitudinal axis at least in some regions when the silicon melt cools down for crystallization.

Device and method for the production of silicon blocks

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Dresden, Germany

Mark Hollatz