Aluminum paste composition for perc type solar cell
A technology for solar cells and paste-like compositions, which can be used in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as environmental impact, and achieve the effects of suppressing voids, excellent adhesion, and high conversion efficiency
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Embodiment 1
[0069] Prepared by B 2 O 3 -Bi 2 O 3 -SrO-BaO-Sb 2 O 3 The first glass frit composed of the composition ratio of 43 / 22 / 18 / 12 / 5 (mol%), and V 2 O 5 -BaO-P 2 O 5 -B 2 O 3 -A second glass frit composed of SrO with a composition ratio of 39 / 26 / 18 / 10 / 7 (mol%).
[0070] Using a well-known mixer such as a disperser or three-roller, 1.0 parts by mass of the above-mentioned first glass frit, 2.0 parts by mass of the second glass frit, and 100 parts by mass of aluminum with a D50 of 6.0 μm produced by the gas atomization method Powder, 25 parts by mass of aluminum-15% silicon alloy powder with a D50 of 6.0 μm produced by the gas atomization method, and 35 parts by mass of a resin solution made by dissolving ethyl cellulose in diethylene glycol butyl ether Mixing to prepare a paste composition. It is prepared so that the content of silicon (Si) contained in the paste composition is 3.0 parts by mass (Si / Al amount is 3.0 wt%) relative to 100 parts by mass of aluminum in the paste composition...
Embodiment 2
[0073] It was prepared by adjusting the amount of aluminum powder used so that the content of silicon (Si) contained in the paste composition was 7.0 parts by mass relative to 100 parts by mass of aluminum in the paste composition. , The paste composition was prepared by the same method as in Example 1 to obtain a solar battery cell.
Embodiment 3
[0075] It was prepared by adjusting the amount of aluminum powder used so that the content of silicon (Si) contained in the paste composition was 15.0 parts by mass relative to 100 parts by mass of aluminum in the paste composition. , The paste composition was prepared by the same method as in Example 1 to obtain a solar battery cell.
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