Schott Solar Ag

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

Werner Buss

Hilmar Von Campe

Albrecht Seidl

Ingo Schwirtlich

Bernd Wildpanner

Dr Hilmar Von Campe

Sascha Reime

A semiconductor component including a first layer () of a semiconductor material as a substrate, a second layer () running on said first layer (), and at least two intermediate layers () made of the materials of the first and second layers running between the first and second layer, where the first intermediate layer () facing the second layer () may contain a eutectic mixture () made of the materials of the first and second layers. The invention is also directed to an electroconductive contact () forming an electroconductive connection to the first layer and originating at or running through the second layer, as well as to a method for producing the metal-semiconductor contact. In order to produce a mechanically durable, electrically flawless, removable contact in the area of the material of the second layer it is proposed that the electroconductive contact () include a solderable or wettable metallic material, which is alloyed into the second layer () or which forms a mixture with the material of the second layer.

Semiconductor component and method for producing a metal-semiconductor contact

A cutting mill for crushing broken polycrystalline needle-shaped silicon material, which contains particles that have an aspect ratio of Awith 5&#x3c;A&#x2266;30, and/or broken Si wafer consisting of laminar particles, wherein the cutting mill has an interior space that is lined with silicon and/or plastic, wherein the cutting mill has a rotational body configured as a multi-sided column, wherein said rotational body, in the regions facing the interior space of the cutting mill, is lined with silicon or features silicon, and wherein blades which run parallel with the longitudinal edges of the rotational body and are disposed in the rotational area of the rotational body, are arranged in the interior space of the cutting mill, and are adjustable with respect to the rotational body.

Method for recovering and/or recycling material

The invention relates to a method and a device for screening first particles out of a granulate comprised of first and second particles by conveying the granulate along a first screen surface which extends outward from a vibrating device, wherein the first particles have an aspect ratio a, with a&#x3e;3:1, and the dimensions of the second particles allow them to fall through the mesh of the first screen surface. To screen a certain material fraction which differs geometrically from the remainder of the material in terms of at least one dimension out of the granulate, it is proposed that the granulate be conveyed along the screen surface between said surface and a cover which extends along the screen surface, and that the cover should cause the first particles to be aligned with their longitudinal axes extending along the screen surface, wherein the longitudinal extension of each first particle is greater than the mesh width of the screen which forms the first screen surface, and the longitudinal extension of the second particles is equal to or less than the mesh width.

Method and device for screening out particles

A method for recovering and/or recycling starting silicon material by crushing the starting material. The recovered or recycled material is melted, and crystals, e.g. as a silicon block, tube, or strip, are grown from the obtained melt. To use starting materials that have a high aspect ratio to be able to convey the same without any problem, broken polycrystalline needle-shaped Si material (material I) containing particles having an aspect ratio A, 5&#x3c;A&#x2266;30, is used as a starting material. Material I is crushed so that the crushed particles (material II) have an aspect ratio A&#x3c;3. Alternatively, a broken Si wafer is used that is composed of laminar particles which are crushed so that the crushed particles (material III) have an aspect ratio A&#x3c;3.

Growing community of inventors

Hanau, Germany

Werner Buss