Patent · US Expired

Method and apparatus for doping a melt with a dopant

US6660082B2 · kind B2 · utility

7Cited by

12References

5Claims

0Family size

Assignee

Wacker Siltronic Gesellschaft Fur Halbleitermaterialien AG · DE

Inventors

Martin Weber · Borgo San Lazzaro, DE
Erich Gmeilbauer · St. Pantaleon, AT
Robert Vorbuchner · Burghausen, DE
Walter Neumaier · Gumpersdorf, DE
Peter Vilzmann · Burghausen, DE

Key dates

Filing date	Feb 14, 2001
Grant date	Dec 9, 2003
Priority date	—
Expiry date	Feb 14, 2021

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T117/1056
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

A method for doping a melt with a dopant has the melt being provided in a crucible. The dopant is introduced into a vessel and the vessel is immersed in the melt, the dopant being transferred into the melt through an opening which forms in the vessel. There is also an apparatus which comprises a vessel containing the dopant and a device which is connected to the vessel, for lowering the vessel into a melt and for lifting the vessel out of the melt, the vessel being provided with an opening which is blocked by a closure piece which is of the same type of material as the melt and melts when it is brought into contact with the melt.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.