CONDUCTIVE PASTE COMPOSITION FOR SOLAR CELL

WIPO Patent Application WO/2012/002182

A1

Disclosed is a conductive paste composition for a solar cell, which enables the control of entry amount of an electrode material easier, while providing an ohmic contact easily when an electrode is formed by a fire-through process in a solar cell that has a shallow emitter structure with a thin n layer. Specifically, a light-receiving surface electrode is configured of a thick silver film that contains lead glass in an amount of 1-10 parts by weight relative to 100 parts by weight of silver, said lead glass having a composition that contains 20-62 mol% of PbO, 1-18 mol% of B2O3, 18-65 mol% of SiO2, 0.6-18 mol% of Li2O, 0-6 mol% of Al2O3, 0-6 mol% of TiO2, 0-30 mol% of ZnO, 0-6 mol% of P2O5 and 0-4 mol% of Sb2O5, with the Pb/Si molar ratio being within the range of 0.5-1.7. Consequently, good ohmic contact is obtained between the light-receiving surface electrode and the n layer and the contact resistance is reduced even though the light-receiving surface electrode has a narrow line width of about 100 μm.

YOSHINO Yasushi (LIMITED Miyoshi Office 300, Higashiyama, Miyoshi-cho, Miyoshi-sh, Aichi 93, 〒4700293, JP)
吉野　泰 (〒93 愛知県みよし市三好町東山３００番地　株式会社ノリタケカンパニーリミテド内 Aichi, 〒4700293, JP)

JP2011/063969

January 05, 2012

June 17, 2011

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NORITAKE CO., LIMITED (1-36, Noritake-shinmachi 3-chome Nishi-ku, Nagoya-sh, Aichi 01, 〒4518501, JP)
株式会社ノリタケカンパニーリミテド (〒01 愛知県名古屋市西区則武新町三丁目１番３６号 Aichi, 〒4518501, JP)
YOSHINO Yasushi (LIMITED Miyoshi Office 300, Higashiyama, Miyoshi-cho, Miyoshi-sh, Aichi 93, 〒4700293, JP)

H01L31/04; H01B1/20; H01L21/28

IKEDA Haruyuki (Ikeda Patent Office, Nagoya-Dia. Bldg. No.2 15-1, Meieki 3-chome, Nakamura-ku, Nagoya-sh, Aichi 02, 〒4500002, JP)

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