Title:
【発明の名称】柱状結晶粒状多結晶太陽電池基材及び改良された製造方法
Document Type and Number:
Japanese Patent JP2001516324
Kind Code:
A
Abstract:
The invention relates to improved techniques for manufacturing columnar-grained polycrystalline sheets which have particular utility as substrates or wafers for solar cells. The sheet is made from silicon on a setter material which supports the silicon material. The setter material and silicon are subjected to a thermal profile all of which promote columnar growth. The thermal profile sequentially creates a melt region where a thin-film capping layer grows at the top of the silicon, a nucleation region where preferential nucleation occurs at the capping-layer/molten-silicon interface, and then a growth region where both liquid and a growing polycrystalline sheet layer coexist. An annealing region is created where the temperature of the grown polycrystalline silicon sheet layer is controllably reduced to effect stress relief.
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Inventors:
Hall, Robert, Bee.
Burnett, Allen, M.
Collins, Sandra, Earl.
Chetchy, Joseph, Sea.
Ford, David, Etch.
Kendall, Christopher, Elle.
Rand, James, A.
Moore, Chad, Bee.
Burnett, Allen, M.
Collins, Sandra, Earl.
Chetchy, Joseph, Sea.
Ford, David, Etch.
Kendall, Christopher, Elle.
Rand, James, A.
Moore, Chad, Bee.
Application Number:
JP53863598A
Publication Date:
September 25, 2001
Filing Date:
March 02, 1998
Export Citation:
Assignee:
Astro Power, Incorporated
International Classes:
C01B33/02; C30B29/06; H01L21/20; H01L31/04; H01L31/18; (IPC1-7): C30B29/06; C01B33/02; H01L21/20; H01L31/04
Attorney, Agent or Firm:
Mikio Hatta (3 outside)