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

Patent · Tue Jul 01 00:00:00 EDT 2014

OSTI ID:1136751

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

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.

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

Sponsoring Organization:: USDOE

DOE Contract Number:: EE0000595

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

Patent Number(s):: 8,764,901

Application Number:: 13/039,808

OSTI ID:: 1136751

Country of Publication:: United States

Language:: English

References (13)

Lateral pulling growth of crystal ribbons and apparatus therefor Shudo, Taro; Kudo, Bosshi; Tamai, Yasuhiro https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4264407 US Patent Document 4,264,407	patent	April 1981
Method and apparatus for producing crystalline ribbons Jewett, David N. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4289571 US Patent Document 4,289,571	patent	September 1981
Method for horizontal ribbon crystal growth Kudo, Bosshi; Matsuo, Kazuyoshi; Maki, Takeshi https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4322263 US Patent Document 4,322,263	patent	March 1982
Lateral pulling growth of crystal ribbons Kudo, Bosshi https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4329195 US Patent Document 4,329,195	patent	May 1982
Process for making solar cell base material Ast, Gerhard; Dietl, Josef; Helmreich, Dieter https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4366024 US Patent Document 4,366,024	patent	December 1982
Controlled heat sink for crystal ribbon growth Jewett, David N. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4417944 US Patent Document 4,417,944	patent	November 1983
Method and apparatus for the production of crystalline silicon substrates Clark, Roger F. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/7608146 US Patent Document 7,608,146	patent	October 2009
Method and apparatus for producing a dislocation-free crystalline sheet Kellerman, Peter L.; Sinclair, Frank; Carlson, Frederick M. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/7816153 US Patent Document 7,816,153	patent	October 2010
Floating sheet production apparatus and method Kellerman, Peter L.; Sinclair, Frank https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/7855087 US Patent Document 7,855,087	patent	December 2010
Floating Sheet Production Apparatus and Method Kellerman, Peter L.; Sinclair, Frank https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20090233396 US Patent Document 12/403206; 20090233396	patent-application	September 2009
Method and Apparatus for the Production of Crystalline Silicon Substrates Clark, Roger F. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20100025885 US Patent Application 12/576614; 20100025885	patent-application	February 2010
Investigation of the meniscus stability in horizontal crystal ribbon growth 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	journal	September 1980
Improvements in the Horizontal Ribbon Growth technique for single crystal silicon Kudo, B. Journal of Crystal Growth, Vol. 50, Issue 1, p. 247-259 https://doi.org/10.1016/0022-0248(80)90248-1	journal	September 1980

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