COMPOSITION FOR MANUFACTURING A BACK CONTACT FOR A CRYSTALLINE SOLAR CELL

WIPO Patent Application WO/2011/138998

A1

The present invention relates to a composition for manufacturing a back contact for a crystalline solar cell. The back contact material used for manufacturing a crystalline solar cell, a front contact and back contact of which are formed on the front side and rear side of a wafer, respectively, comprises a mixture composition consisting of an acrylate- or cellulose-based resin, aluminum powder, an inorganic binder, and an additive for increasing adhesion to a wafer, wherein the aluminum powder is a powder mixture containing aluminum powder, the size of which is 30-100 nm, and aluminum powder, the size of which is 2-10 μm. The composition of the present invention uses said types of aluminum powder, the sizes of which are smaller than those disclosed in prior art, thereby reducing Rs-contact resistance and thus enabling a solar cell to have excellent photoelectric conversion efficiency.

YOO SI-BUM (KR)
KIM HONG-HUN (KR)
HWANG SUN-AM (KR)
KANG DON-O (KR)
SA YOUNG-HO (KR)

PCT/KR2010/003436

November 10, 2011

May 29, 2010

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KOREA TAEYANG INK MFG CO LTD (KR)
YOO SI-BUM (KR)
KIM HONG-HUN (KR)
HWANG SUN-AM (KR)
KANG DON-O (KR)
SA YOUNG-HO (KR)

H01L31/042

KR100801168B1	2008-02-05
JP2004134775A	2004-04-30
JP2010083953A	2010-04-15

TAEDONG PATENT & LAW FIRM (KR)
특허법인 태동 (KR)

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