Composition for forming solar cell electrode, and electrode produced from composition

A solar cell and composition technology, which is applied to conductive materials, circuits, electrical components and other directions dispersed in non-conductive inorganic materials, can solve problems such as difficulty in printing patterns, and achieve the effect of high aspect ratio
CN104903973AActive Publication Date: 2015-09-09上海匠聚新材料有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
上海匠聚新材料有限公司
Publication Date
2015-09-09

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Abstract

The present invention relates to a composition for forming a solar cell electrode which is characterized by including a conductive powder, a glass frit, an organic vehicle, and a thixotropic agent, and satisfying 3<TI 10=(viscosity at 1 rpm) / (viscosity at 10 rpm)<5.5, 4<TI 20=(viscosity at 2 rpm) / (viscosity at 20 rpm)<7, 6<TI 50=(viscosity at 5 rpm) / (viscosity at 50 rpm)<7.5, 6<TI 100=(viscosity at 10 rpm) / (viscosity at 100 rpm)<7.5, 1<¦TI 10-TI 20¦<2, 0.5<¦TI 20-TI 50¦<1.5, and 0<=¦TI 50-TI 100¦<0.8. Here, thixotropic index (TI) is a value calculated by substituting viscosity measured at each revolution (rpm) with a spindle number 14 by using a rotation viscometer at 23°C. The composition for forming a solar cell electrode can realize a print pattern having a fine line width and high aspect ratio, and has excellent conversion efficiency.
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Description

technical field

[0001] The present invention relates to a composition for solar cell electrodes and an electrode manufactured using the composition. More particularly, the present invention relates to a solar cell electrode composition which can be printed on a substrate with fine line width and high aspect ratio by screen printing and has high conversion efficiency, and The present invention relates to electrodes manufactured using the composition. Background technique

[0002] A solar cell generates electricity using a pn junction photovoltaic effect (photovoltaic effect) that converts photons of sunlight into electricity. In a solar cell, a front electrode and a back electrode are respectively formed on an upper surface and a lower surface of a semiconductor wafer or substrate having a pn junction. Then, the photovoltaic effect at the pn junction is induced by sunlight entering the semiconductor wafer, and electrons generated by the photovoltaic effect at the pn junctio...

Claims

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