Noritake Co., Ltd.

Ayumi Murakami

Hiromichi Hayashi

Atsushi Nagai

Takahiro Sugiyama

The electroconductive inkjet ink disclosed herein contains at least inorganic powder containing high melting point metal particles, a dispersant, an organic solvent, and a poly(vinyl acetal) resin. In the electroconductive ink, the inorganic powder has an average primary particle diameter of 500 nm or less, a volume ratio of the inorganic powder is 7.5% by volume or lower, the ratio (S/V) of the specific surface area of the inorganic powder with respect to the volume of the dispersant is 0.25 or higher and 10 or lower, the poly(vinyl acetal) resin has an average molecular weight of 2.5×10or larger and 6.4×10or smaller, and the ratio (W/W) of the weight of the poly(vinyl acetal) resin with respect to the weight of the organic solvent is 0.5% by weight or higher and 3% by weight or lower.

Electroconductive inkjet ink

It is provided a paste composition for a solar cell electrode containing a conductive powder, a glass frit, and a vehicle, the glass frit being made of glass containing PbO, BO, and SiOat proportions within ranges of 46 to 57 (mol %), 1 to 7 (mol %), and 38 to 53 (mol %), respectively, in terms of oxide.

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Miyoshi, Japan

Ayumi Murakami