Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
January 29, 2008
Patent Application Number
11387624
Date Filed
March 22, 2006
Patent Primary Examiner
Patent abstract
In a method for manufacturing a granular silicon crystal by allowing silicon melt in a crucible to be granularly discharged and fallen from a nozzle part composed of silicon carbide or silicon nitride, and cooling and solidifying the granular silicon melt during falling, a carbon source is added when the nozzle part is composed of silicon carbide, and a nitrogen source is added when the nozzle part is composed of silicon nitride, to the silicon melt in the crucible. Thereby, melt droplets of uniform size can be generated, so that granular silicon crystals having narrow variations in particle size can be manufactured at high productivity and superior reproducibility.
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