PASTE COMPOSITION AND SOLAR CELL ELEMENT USING THE SAME
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United States of America Patent
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Issued Date -
May 3, 2012
app pub date -
Jun 28, 2010
filing date -
Jul 30, 2009
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Abstract
A paste composition with no bow of a silicon semiconductor substrate and no blisters and globules of aluminum in the aluminum electrode layer obtained after firing. In addition, adhesiveness of an aluminum electrode layer and the silicon semiconductor substrate is enhanced and the reaction of the aluminum electrode layer and moisture is suppressed. A solar cell element including electrodes is formed by using the composition. The paste composition is a paste used for forming an electrode on a silicon semiconductor substrate including an aluminum powder, an organic vehicle, and glass frit. The glass frit including at least one kind of a transition metal oxide selected from the group including a titanium oxide, a vanadium oxide, an iron oxide, a molybdenum oxide, a neodymium oxide, and a tungsten oxide. A solar cell element includes a back side electrode formed by using the above paste composition.
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