Silver paste composition and solar cell using same

Abstract

The present invention relates to a silver paste composition and to a solar cell using the same. The silver paste composition of the present invention is applied onto an anti-reflective film, and comprises silver powder, glass frit powder, an organic binder and a plasticizer. The silver paste composition for the formation of a front electrode of a solar cell according to the present invention can be printed into a uniform pattern, and has superior bonding force to a substrate.

Description

technical field

[0001] The present invention relates to a silver paste composition and a solar cell using the silver paste composition, more particularly, to a silver paste composition for forming a front electrode of a solar cell, when the silver paste When the composition is applied by screen printing or the like, the uniformity, stability and adhesive strength of a printed pattern can be improved, and relates to a silicon solar cell using the silver paste composition. Background technique

[0002] In recent years, the depletion of conventional energy sources such as petroleum or charcoal is predicted, and therefore, attention to alternative energy sources has been increasing. Among these alternative energy sources, solar cells, in particular, have abundant energy resources and do not cause environmental pollution, so they have become the target of attention.

[0003] Solar cells are divided into solar thermal cells and solar photovoltaic cells. Solar thermal cells use th...

Examples

Embodiment 1～7 and comparative example 1

[0055] By mixing silver powder, glass powder, organic binder (ethyl cellulose) and additives (plasticizer, wetting agent and thixotropic agent) according to the composition (unit: weight %) shown in Table 1 below, and then using 3 Each silver paste composition was prepared by uniformly dispersing with a roll mill.

[0056] In Table 1, the plasticizer in Examples 1 to 4 is dipropylene glycol dibenzoate (DPD), the plasticizer in Example 5 is dioctyl phthalate (DOP), and in Example 6 The plasticizer in Example 7 is dioctyl adipate (DOA), and the plasticizer in Example 7 is tricresyl phosphate (TCP).

[0057] Table 1

[0058]

technical field

[0001] The present invention relates to a silver paste composition and a solar cell using the silver paste composition, more particularly, to a silver paste composition for forming a front electrode of a solar cell, when the silver paste When the composition is applied by screen printing or the like, the uniformity, stability and adhesive strength of a printed pattern can be improved, and relates to a silicon solar cell using the silver paste composition. Background technique

[0002] In recent years, the depletion of conventional energy sources such as petroleum or charcoal is predicted, and therefore, attention to alternative energy sources has been increasing. Among these alternative energy sources, solar cells, in particular, have abundant energy resources and do not cause environmental pollution, so they have become the target of attention.

[0003] Solar cells are divided into solar thermal cells and solar photovoltaic cells. Solar thermal cells use th...

Examples

Embodiment 1～7 and comparative example 1

[0055] By mixing silver powder, glass powder, organic binder (ethyl cellulose) and additives (plasticizer, wetting agent and thixotropic agent) according to the composition (unit: weight %) shown in Table 1 below, and then using 3 Each silver paste composition was prepared by uniformly dispersing with a roll mill.

[0056] In Table 1, the plasticizer in Examples 1 to 4 is dipropylene glycol dibenzoate (DPD), the plasticizer in Example 5 is dioctyl phthalate (DOP), and in Example 6 The plasticizer in Example 7 is dioctyl adipate (DOA), and the plasticizer in Example 7 is tricresyl phosphate (TCP).

[0057] Table 1

[0058]

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