Title:
TEXTURE-ETCHING LIQUID, LIQUID ADDITIVE FOR TEXTURE-ETCHING LIQUID, TEXTURED SUBSTRATE, METHOD FOR MANUFACTURING TEXTURED SUBSTRATE, AND SOLAR CELL
Document Type and Number:
WIPO Patent Application WO/2015/064174
Kind Code:
A1
Abstract:
This invention: provides, at low cost, a texture-etching liquid and a liquid additive therefor that make it easy to stably reproduce a highly uniform pattern of minute pyramidal concavities and convexities that is suitable for use in a monocrystalline solar cell or the like; uses said texture-etching liquid to provide a textured substrate having a uniform pattern of minute pyramidal concavities and convexities; and provides a high-efficiency solar cell using said textured substrate. Either a texture-etching liquid containing an alkali component, a tannin, and a stilbene derivative or a texture-etching liquid to which a liquid additive containing a tannin with a concentration of up to 30 wt.% and a stilbene derivative with a concentration of up to 30 wt.% is added is used to manufacture a silicon substrate with at least one surface thereof textured and a solar cell that contains said silicon substrate with (one of) the textured surface(s) thereof on a light-receiving-surface side.
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Inventors:
MURAKAMI TAKASHI (JP)
MATSUOKA TOSHIFUMI (JP)
MATSUOKA TOSHIFUMI (JP)
Application Number:
PCT/JP2014/071170
Publication Date:
May 07, 2015
Filing Date:
August 11, 2014
Export Citation:
Assignee:
JAPAN VAM & POVAL CO LTD (JP)
International Classes:
H01L21/308; H01L31/0236; H01L31/18
Foreign References:
| JP2011159745A | 2011-08-18 | |||
| JP2006351811A | 2006-12-28 | |||
| JP2005019605A | 2005-01-20 | |||
| JP2009123811A | 2009-06-04 |
Attorney, Agent or Firm:
IWATANI, Ryo (JP)
Tatsu Iwatani (JP)
Tatsu Iwatani (JP)
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