Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Commissariat a L'energie Atomique

Benoit Marie

Denis Camel

Etienne Pihan

Anis Jouini

Florence Servant

Gautier Fortin

Vanessa Amaral De Oliveira

Denis Chavrier

Nelly Plassat

Damien Ponthenier

A method for manufacturing a silicon cylinder by growth on seeds in a directed solidification furnace, including at least the following steps: (i) providing a crucible having a longitudinal axis (Z), in which the bottom is covered with a layer of seeds of monocrystalline silicon in a right prism shape; and (ii) proceeding with directed solidification of silicon by growth on seeds, in a direction of growth that is co-linear with the axis (Z) and with a concave solidification front, spatially or temporally; characterized in that the layer in step (i) of: one or more central seeds G; and one or more peripheral seeds Gcontiguous to the seed(s) G, the peripheral seeds Ghaving a specific size.

Method for manufacturing a silicon cylinder by growth on seeds in a directed solidification furnace

The device for producing a block of crystalline material from a bath of molten material comprises a crucible having a bottom and heat extraction means arranged under the crucible. It also comprises means for modulating the thermal conductivity fitted between the bottom of the crucible and the heat extraction means. The means for modulating the thermal conductivity comprise a plurality of plates made from thermally conducting material of low emissivity, parallel to the bottom of the crucible, and means for moving said plates closer to and away from one another.

Device for producing a block of crystalline material with modulation of the thermal conductivity

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Aix-les-Bains, France

Benoit Marie