Title:
METHOD FOR PRODUCING SILICON BLOCK AND SILICON WAFER
Document Type and Number:
WIPO Patent Application WO/2006/120736
Kind Code:
A1
Abstract:
The purpose is to provide a silicon block which can be processed into a thin silicon wafer having reduced breakage of a substrate during the manufacture of a solar battery. A method for producing a silicon block by cutting a silicon ingot using a silicon ingot cutting slurry containing abrasive grains and a basic substance, the basic substance being contained in a content of at least 3.5% by mass relative to the total mass of the liquid components of the slurry, the slurry containing an organic amine at a ratio of 0.5 to 5.0 inclusive by mass relative to the mass of the moisture in the liquid components of the slurry, and the slurry having a pH of 12 or higher and being used at a temperature within the range from 65 to 95&ring C.
Inventors:
Morikawa, Hiroaki c/o Mitsubishi Denki Kabushiki Kaisha (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
Karakida, Shoichi c/o Mitsubishi Denki Kabushiki Kaisha (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
Kawasaki, Takafumi c/o Mitsubishi Denki Kabushiki Kaisha (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
Karakida, Shoichi c/o Mitsubishi Denki Kabushiki Kaisha (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
Kawasaki, Takafumi c/o Mitsubishi Denki Kabushiki Kaisha (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
Application Number:
PCT/JP2005/008603
Publication Date:
November 16, 2006
Filing Date:
May 11, 2005
Export Citation:
Assignee:
MITSUBISHI DENKI KABUSHIKI KAISHA (7-3 Marunouchi 2-chome, Chiyoda-ku Tokyo, 10, 10083, JP)
Morikawa, Hiroaki c/o Mitsubishi Denki Kabushiki Kaisha (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
Karakida, Shoichi c/o Mitsubishi Denki Kabushiki Kaisha (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
Kawasaki, Takafumi c/o Mitsubishi Denki Kabushiki Kaisha (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
Morikawa, Hiroaki c/o Mitsubishi Denki Kabushiki Kaisha (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
Karakida, Shoichi c/o Mitsubishi Denki Kabushiki Kaisha (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
Kawasaki, Takafumi c/o Mitsubishi Denki Kabushiki Kaisha (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
International Classes:
B28D5/04; C09K3/14; B28D5/04; C09K3/14
Attorney, Agent or Firm:
Soga, Michiteru (S. Soga & Co, 8th floor Kokusai Building, 1-1, Marunouchi 3-chom, Chiyoda-ku Tokyo, 100-0005, JP)
Download PDF:
Previous Patent: SOLAR BATTERY AND METHOD FOR MANUFACTURING SAME
Next Patent: CONTROL DEVICE FOR ELEVATOR
Next Patent: CONTROL DEVICE FOR ELEVATOR