Title:
SOLAR CELL, METHOD FOR PRODUCING SAME, AND DEVICE FOR PRODUCING SOLAR CELL
Document Type and Number:
WIPO Patent Application WO/2012/011188
Kind Code:
A1
Abstract:
One of the disclosed methods for producing a solar cell contains an immersion step for immersing a silicon substrate or a solar cell formed from the silicon substrate in a cyanide-containing solution of which the cyanide (CN) concentration is no greater than 5% more than 100 ppm and that is between 5°C and 50°C, inclusive. By means of this method of production, the level of defects that presumably exist on the surface and/or the p-n junction surface region of the silicon substrate or the solar cell formed from the silicon substrate can be decreased. Also, by means of the presence of cyanide ions (CN-), contamination by metals or the like present on the surface of the silicon substrate can be adequately eliminated. As a result, the solar cell can be caused to have higher efficiency.
Inventors:
KOBAYASHI, Hikaru (106 Honmachi 9-chome, Higashiyama-ku Kyoto-sh, Kyoto 81, 〒6050981, JP)
Application Number:
JP2010/062420
Publication Date:
January 26, 2012
Filing Date:
July 23, 2010
Export Citation:
Assignee:
KOBAYASHI, Hikaru (106 Honmachi 9-chome, Higashiyama-ku Kyoto-sh, Kyoto 81, 〒6050981, JP)
小林 光 (〒81 京都府京都市東山区本町９丁目１０６番地 Kyoto, 〒6050981, JP)
小林 光 (〒81 京都府京都市東山区本町９丁目１０６番地 Kyoto, 〒6050981, JP)
International Classes:
H01L31/04
Attorney, Agent or Firm:
KOUNO, Hiroaki (Suehiro-center Bldg. 7F, 4-8 Yorikimachi, Kita-ku, Osaka-sh, Osaka 36, 〒5300036, JP)
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