Removing a sheet from the surface of a melt using elasticity and buoyancy

Kellerman, Peter L.; Sun, Dawei; Helenbrook, Brian; Harvey, David S.

Title: Removing a sheet from the surface of a melt using elasticity and buoyancy

Abstract

Embodiments related to sheet production are disclosed. A melt of a material is cooled to form a sheet of the material on the melt. The sheet is formed in a first region at a first sheet height. The sheet is translated to a second region such that it has a second sheet height higher than the first sheet height. The sheet is then separated from the melt. A seed wafer may be used to form the sheet.

Inventors:: Kellerman, Peter L.; Sun, Dawei; Helenbrook, Brian; Harvey, David S.

Issue Date:: 2014-07-01

Research Org.:: Varian Semiconductor Equipment Associates, Inc., Gloucester, MA (USA).

Sponsoring Org.:: USDOE

OSTI Identifier:: 1136751

Patent Number(s):: 8764901

Application Number:: 13/039,808

Assignee:: Varian Semiconductor Equipment Associates, Inc. (Gloucester, MA)

Patent Classifications (CPCs):: C - CHEMISTRY C30 - CRYSTAL GROWTH C30B - SINGLE-CRYSTAL-GROWTH

Show more

C - CHEMISTRY C30 - CRYSTAL GROWTH C30B - SINGLE-CRYSTAL-GROWTH
C30B15/20 - Controlling or regulating
C30B29/06 - Silicon
C30B15/22 - Stabilisation or shape controlling of the molten zone near the pulled crystal
C30B15/00 - Single-crystal growth by pulling from a melt, e.g. Czochralski method
C30B15/06 - Non-vertical pulling
C30B11/007 - {Mechanisms for moving either the charge or the heater}

Show less

DOE Contract Number:: EE0000595

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE

Citation Formats


                    Kellerman, Peter L., Sun, Dawei, Helenbrook, Brian, and Harvey, David S. Removing a sheet from the surface of a melt using elasticity and buoyancy.  United States: N. p., 2014. 
        Web.

Copy to clipboard


                    Kellerman, Peter L., Sun, Dawei, Helenbrook, Brian, & Harvey, David S. Removing a sheet from the surface of a melt using elasticity and buoyancy.  United States.

Copy to clipboard


                    Kellerman, Peter L., Sun, Dawei, Helenbrook, Brian, and Harvey, David S. Tue .  
        "Removing a sheet from the surface of a melt using elasticity and buoyancy".  United States.  https://www.osti.gov/servlets/purl/1136751.

Copy to clipboard


                    
@article{osti_1136751,

  title        = {Removing a sheet from the surface of a melt using elasticity and buoyancy},

  author       = {Kellerman, Peter L. and Sun, Dawei and Helenbrook, Brian and Harvey, David S.},

  abstractNote = {Embodiments related to sheet production are disclosed. A melt of a material is cooled to form a sheet of the material on the melt. The sheet is formed in a first region at a first sheet height. The sheet is translated to a second region such that it has a second sheet height higher than the first sheet height. The sheet is then separated from the melt. A seed wafer may be used to form the sheet.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2014},

  month        = {7}

}

Copy to clipboard

Patent:

Save / Share:

Export Metadata

Save to My Library

Works referenced in this record:

Investigation of the meniscus stability in horizontal crystal ribbon growth
journal, September 1980

Rhodes, C. A.; Sarraf, M. M.; Liu, C. H.
Journal of Crystal Growth, Vol. 50, Issue 1, p. 94-101
https://doi.org/10.1016/0022-0248(80)90234-1

Improvements in the Horizontal Ribbon Growth technique for single crystal silicon
journal, September 1980

Kudo, B.
Journal of Crystal Growth, Vol. 50, Issue 1, p. 247-259
https://doi.org/10.1016/0022-0248(80)90248-1

Similar Records in DOE Patents and OSTI.GOV collections:

Sheet production apparatus for removing a crystalline sheet from the surface of a melt using gas jets located above and below the crystalline sheet

Patent Kellerman, Peter L.; Thronson, Gregory D.

In one embodiment, a sheet production apparatus comprises a vessel configured to hold a melt of a material. A cooling plate is disposed proximate the melt and is configured to form a sheet of the material on the melt. A first gas jet is configured to direct a gas toward an edge of the vessel. A sheet of a material is translated horizontally on a surface of the melt and the sheet is removed from the melt. The first gas jet may be directed at the meniscus and may stabilize this meniscus or increase local pressure within the meniscus.
Full Text Available
Removing a sheet from the surface of a melt using gas jets

Patent Kellerman, Peter L.; Thronson, Gregory D.; Sun, Dawei

In one embodiment, a sheet production apparatus comprises a vessel configured to hold a melt of a material. A cooling plate is disposed proximate the melt and is configured to form a sheet of the material on the melt. A first gas jet is configured to direct a gas toward an edge of the vessel. A sheet of a material is translated horizontally on a surface of the melt and the sheet is removed from the melt. The first gas jet may be directed at the meniscus and may stabilize this meniscus or increase local pressure within the meniscus.
Full Text Available
Removal of oxides from alkali metal melts by reductive titration to electrical resistance-change end points

Patent Tsang, Floris Y [Walnut Creek, CA]

Alkali metal oxides dissolved in alkali metal melts are reduced with soluble metals which are converted to insoluble oxides. The end points of the reduction is detected as an increase in electrical resistance across an alkali metal ion-conductive membrane interposed between the oxide-containing melt and a material capable of accepting the alkali metal ions from the membrane when a difference in electrical potential, of the appropriate polarity, is established across it. The resistance increase results from blocking of the membrane face by ions of the excess reductant metal, to which the membrane is essentially non-conductive.
Full Text Available
Expansible apparatus for removing the surface layer from a concrete object

Patent Allen, Charles H [Pasco, WA]

A method and apparatus for removing the surface layer from a concrete object. The method consists of providing a hole having a circular wall in the surface layer of the object, the hole being at least as deep as the thickness of the surface layer to be removed, and applying an outward wedging pressure on the wall of the hole sufficient to spall the surface layer around the hole. By the proper spacing of an appropriate number of holes, it is possible to remove the entire surface layer from an object. The apparatus consists of an elongated tubular-shaped body havingmore » « less
Full Text Available
Apparatus for melt growth of crystalline semiconductor sheets

Patent Ciszek, Theodore F [Evergreen, CO]; Hurd, Jeffery L [Golden, CO]

An economical method is presented for forming thin sheets of crystalline silicon suitable for use in a photovoltaic conversion cell by solidification from the liquid phase. Two spatially separated, generally coplanar filaments wettable by liquid silicon and joined together at the end by a bridge member are immersed in a silicon melt and then slowly withdrawn from the melt so that a silicon crystal is grown between the edge of the bridge and the filaments.
Full Text Available

Similar Records

Title: Removing a sheet from the surface of a melt using elasticity and buoyancy

Abstract

Citation Formats

Investigation of the meniscus stability in horizontal crystal ribbon growth journal, September 1980

Improvements in the Horizontal Ribbon Growth technique for single crystal silicon journal, September 1980

Investigation of the meniscus stability in horizontal crystal ribbon growth
journal, September 1980

Improvements in the Horizontal Ribbon Growth technique for single crystal silicon
journal, September 1980