Title:
PROCESS FOR PRODUCTION OF SILICON POWDER, MULTI-CRYSTAL-TYPE SOLAR CELL PANEL, AND PROCESS FOR PRODUCTION OF THE SOLAR CELL PANEL
Document Type and Number:
WIPO Patent Application WO/2011/048797
Kind Code:
A1
Abstract:
Disclosed is a process for producing a silicon powder, which comprises the steps of: powderizing a silicon ingot having a grade of 99.999% or more into a crude silicon powder having a particle diameter of 3 mm or less by means of high-pressure purified-water cutting; and reducing the crude silicon powder into a silicon powder having a particle diameter ranging from 0.01 to 10 μm inclusive by means of at least one method selected from jet milling, wet granulation, ultrasonic wave disruption and shock wave disruption. The process is a technique for producing a silicon powder rapidly from a silicon ingot without reducing purity.
Inventors:
NAKAYAMA ICHIRO
YAMANISHI HITOSHI
OOIDO YOSHIHISA
KAMIKIHARA NOBUYUKI
OKUMURA TOMOHIRO
YAMANISHI HITOSHI
OOIDO YOSHIHISA
KAMIKIHARA NOBUYUKI
OKUMURA TOMOHIRO
Application Number:
PCT/JP2010/006194
Publication Date:
April 28, 2011
Filing Date:
October 19, 2010
Export Citation:
Assignee:
PANASONIC CORP (JP)
NAKAYAMA ICHIRO
YAMANISHI HITOSHI
OOIDO YOSHIHISA
KAMIKIHARA NOBUYUKI
OKUMURA TOMOHIRO
NAKAYAMA ICHIRO
YAMANISHI HITOSHI
OOIDO YOSHIHISA
KAMIKIHARA NOBUYUKI
OKUMURA TOMOHIRO
International Classes:
H01L31/04; C01B33/02
Foreign References:
| JP2000279841A | 2000-10-10 | |||
| JPH06271309A | 1994-09-27 | |||
| JPH0487325A | 1992-03-19 | |||
| JP2001189478A | 2001-07-10 | |||
| JPH06252432A | 1994-09-09 | |||
| JPH078828A | 1995-01-13 | |||
| JP2000101109A | 2000-04-07 | |||
| JP2001269557A | 2001-10-02 |
Attorney, Agent or Firm:
WASHIDA, KIMIHITO (JP)
Koichi Washida (JP)
Koichi Washida (JP)
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