Device and method for producing silicon blocks

US9371597B2 · kind B2 · utility

Assignees

• SOLARWORLD INNOVATIONS GMBH · DE
• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

• Bernhard Freudenberg · Coburg, DE
• Sara Grützner · Wilthen, DE
• Marc Dietrich · Gießen, DE
• Kaspars DADZIS · Freiberg, DE
• Andreas Krause · Frankfurt am Main, DE
• Bianca Gründig-Wendrock · Marienberg, DE
• Doreen NAUERT · Großschirma, DE
• Matthias TREMPA · Erlangen, DE
• Christian Reimann
• Jochen Friedrich · Eckental, DE

Key dates

• Filing date: Apr 26, 2012
• Grant date: Jun 21, 2016
• Expiry date: Mar 16, 2035

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/24942
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

Device for producing silicon blocks for photovoltaic applications, comprising a container for receiving a silicon melt with a base wall and at least one side wall, means for reducing the diffusion of impurities from at least one of the walls of the container into the silicon melt, wherein the means for reducing the diffusion of impurities comprise at least one covering element for the at least partial covering of at least one of the walls of the container.