Title:
SOLAR CELL AND PROCESS FOR PRODUCTION THEREOF, AND SOLAR CELL PRODUCTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2012/014668
Kind Code:
A1
Abstract:
A process for producing a solar cell of the present invention comprises a step of bringing a semiconductor into contact with a nitric acid vapor produced from nitric acid having a concentration of 60 to 99.9 wt% inclusive and a temperature of room temperature to 120.7°C inclusive to form an insulating film on the front surface and/or the back surface of the semiconductor. By employing this process, it is possible to suppress the surface re-binding in a surface region of the semiconductor, in other words, to form a highly uniform insulating film that can achieve the inactivation of the surface of the semiconductor. As a result, the conversion efficiency of the solar cell can be remarkably improved.
Inventors:
KOBAYASHI, Hikaru (106 Honmachi 9-chome, Higashiyama-ku Kyoto-sh, Kyoto 81, 〒6050981, JP)
Application Number:
JP2011/065848
Publication Date:
February 02, 2012
Filing Date:
July 12, 2011
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:
H01L21/316; H01L21/336; H01L29/78; H01L29/786; 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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Claims:
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