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H

Hans-Christof Dr. Freiheit

Researcher at Wacker Chemie

Publications -  5
Citations -  62

Hans-Christof Dr. Freiheit is an academic researcher from Wacker Chemie. The author has contributed to research in topics: Polycrystalline silicon & Rod. The author has an hindex of 3, co-authored 5 publications receiving 62 citations.

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Patent

Polycrystalline silicon rod for zone reflecting and a process for the production thereof

TL;DR: In this paper, a polysilicon rod for FZ applications is described, which is obtained by deposition of high-purity silicon from a silicon-containing reaction gas, which has been thermally decomposed or reduced by hydrogen, on a filament rod.
Patent

Polycrystalline silicon rod for floating zone method and a process for the production thereof

TL;DR: The polysilicon rod obtained onto a filament rod by depositing high-purity silicon from a silicon-containing reaction gas for floating zone (FZ) applications, comprises four different regions having different microstructures in the radial cross section of the rod as discussed by the authors.
Journal ArticleDOI

A general method for the calculation of segregation profiles in floating zone grown silicon ingots with non-uniform initial distribution of the solute

TL;DR: In this paper, a tool for the computation of final concentration profiles in floating zone grown ingots with non-uniform initial distributions is developed, which allows the re-calculation of polysilicon data from single crystal data.
Patent

Polykristalliner Siliciumstab für das Zonenziehen und ein Verfahren zu dessen Herstellung

TL;DR: Gegenstand der Erfindung ist ein Polysiliciumstab fur FZ-Anwendungen, notoriouslyerhaltlich durch Abscheidung von hochreinem Silicium ausÃÂÃÂeinem siliciumhaltigen Reaktionsgas, das thermisch zersetzt oder¯¯durch Wasserstoff reduziert wurde, an einem Filamentstab as mentioned in this paper.
Patent

Polykristalliner Siliciumstab für das Zonenschmelzverfahren und ein Verfahren zu dessen Herstellung

TL;DR: Gegenstand der Erfindung ist ein Polysiliciumstab fur FZ-Anwendungen erhaltlich durch Abscheidung von hochreinem Silicium aus einem siliciumhaltigen Reaktionsgas, das thermisch zersetzt oder durch Wasserstoff reduziert wurde, an einem Filamentstab.