Bayer Aktiengesellschaft

Solarworld Innovations Gmbh

Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Heraeus Quarzglas Gmbh & Co Kg

Deutsche Solar Ag

Bayer Aktiensesellschaft

Solarworld Industries Sachsen Gmbh

Bernhard Freudenberg

Johannes Seyer

Marc Dietrich

Andreas Krause

Armin Müller

Ernst Gugel

Josef Stenzenberger

Gerd Fischer

Mark Hollatz

Kaspars Dadzis

Walter Lehmann

Christian Schenk

Gerrit Scheich

Jochen Friedrich

Peter Thometzek

Nils-Christian Nielsen

Jens Seidel

Christian Reimann

Robert Zacharias

Sara Grützner

Felix Hellmuth

Bianca Gründig-Wendrock

Sandra Nadolny

Doreen Nauert

Franziska Wolny

Matthias Trempa

A method for producing a solar crucible includes providing a crucible base body of transparent or opaque fused silica having an inner wall, providing a dispersion containing amorphous SiOparticles, applying a SiO-containing slip layer to at least a part of the inner wall by using the dispersion, drying the slip layer to form a SiO-containing grain layer and thermally densifying the SiO-containing grain layer to form a diffusion barrier layer. The dispersion contains a dispersion liquid and amorphous SiOparticles that form a coarse fraction and a fine fraction with SiOnanoparticles. The weight percentage of the SiOnanoparticles based on the solids content of the dispersion is in the range between 2 and 15% by weight. The SiO-containing grain layer is thermally densified into the diffusion barrier layer through the heating up of the silicon in the crystal growing process.

Silicon block, method for producing the same, crucible of transparent or opaque fused silica suited for performing the method, and method for the production thereof

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.

Device and method for producing silicon blocks

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

Oven for non-metal melting, in particular silicon melting, with a housing enclosing an interior, at least one mould arranged in the interior for receiving a non-metal melt, at least one electrical heating device enclosing, at least partially, the at least one mould for influencing the temperature of the non-metal melt, and a power supply device connected in an electrically conductive manner to the at least one heating device for providing the heating device with a time-variable current I(t), wherein the current I(t) has a frequency of 0.1 Hz to 1000 Hz and the current I(t) is of a magnitude sufficient for setting a predetermined temperature of the non-metal melt, the currents in the plurality, where necessary, of heaters having a defined phase position in respect of one another.

Oven for non-metal melting

In a low pressure die casting apparatus, the properties of the rising pipe of sintered ceramic material for light metal melts is improved by a covering of heat-resistant material surrounding the upper part of the rising pipe.

Rising pipe for light metal melts

A gassing agitator for light metal melts made of thermal shock-resistant ceramic is described which consists of minimally machined ceramic tubes that are connected to one another using the insert and lock technique.

Gassing agitator for light metal melts

Ceramics having principal phases of aluminum iron titanate and mullite corresponding to the overall chemical composition:

Ceramics based on aluminum titanate, process for their production and

Slip-cast ceramic component having an internal chamfer which is optionally interrupted by an internally projecting area, obtainable by providing a slip cast blank of the ceramic component with uniform thickness and desired internal configuration wherein the volume corresponding to the internal chamfer is outwardly disposed and which is removed by external machining to arrive at the geometry of the ceramic component. The component is useful, inter alia, as a spacer ring which serves for the positioning of honeycomb-shaped catalyst blocks in exhaust gas lines.

Slip-cast ceramic component and a process for its production

Sintered ceramic material which comprises doped aluminum titanate and mullite having the composition:

Sintered ceramic materials based on aluminium titanate, a process for

A ceramic raw material mixture with improved processing properties comprising at least two chemically different raw material components, wherein at least two of the raw material components have the same type of cation on the surface thereof, at least one of the raw material components being coated with said type of cation and the coating, calculated as cation oxide, amounting to 0.01 to 6% by weight, based on the coated component, and all the raw material components having a surface with an isoelectric point of .ltoreq.pH 7.

Mixture of raw materials with improved processing properties, a process

Growing community of inventors

Coburg, Germany

Bernhard Freudenberg