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Composition for forming solar cell electrode and electrode prepared using same

A technology of solar cells and compositions, applied to conductive materials dispersed in non-conductive inorganic materials, circuits, photovoltaic power generation, etc., can solve problems such as poor contact resistance characteristics

Active Publication Date: 2020-03-06
CHANGZHOU JUHE NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compositions prepared by these methods suffer from poor contact resistance characteristics despite improved adhesion to substrates
Therefore, it is difficult to produce a composition for a solar cell electrode exhibiting good properties both in terms of adhesion to a substrate and resistance characteristics using the aforementioned methods

Method used

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  • Composition for forming solar cell electrode and electrode prepared using same
  • Composition for forming solar cell electrode and electrode prepared using same
  • Composition for forming solar cell electrode and electrode prepared using same

Examples

Experimental program
Comparison scheme
Effect test

example 1 to example 5

[0073]As an organic binder, 1.0 parts by weight of ethyl cellulose (STD4, Dow Chemical Company) was fully dissolved in 6.8 parts by weight of butyl carbitol at 60° C. Added 89.0 parts by weight of the average particle diameter of 1.0 μm spherical silver powder (AG-4-8, DowaHightech Co., Ltd.), 2.7 parts by weight of the average particle diameter of the above binder solution 1.0 μm glass frit, 0.2 parts by weight of dispersant BYK102 (BYK-chemie) and 0.3 parts by weight of thixotropic agent Thixatrol ST (Elementis Co., Ltd. Co., Ltd.)), and then mixed and kneaded in a 3-roll kneader to prepare a composition for solar cell electrodes. Here, the glass frit includes the first glass frit and the second glass frit respectively prepared according to the composition listed in Table 1 in the amount listed in Table 1, and the elemental silver of the first glass frit is derived from silver carbonate.

example 6 to example 15

[0075] In the same manner as in Example 1 to A composition for solar cell electrodes was prepared in the same manner as Example 5.

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Abstract

The invention provides a composition for forming a solar cell electrode and an electrode prepared by using the composition. A composition for a solar cell electrode comprising: silver powder; glass frit; and an organic vehicle, wherein the glass frit includes a first glass frit and a second glass frit, and wherein the first glass frit is mixed in a ratio of 75:1 to 1:25 The molar ratio (Te:Ag) comprises tellurium (Te) and silver (Ag), and the second glass frit comprises lead-tellurium-oxide (Pb-Te-O) based glass frit or bismuth-tellurium-oxide (Bi‑Te‑O)-based glass frit does not contain silver (Ag).

Description

[0001] Cross References to Related Applications [0002] This application claims the rights of Korean Patent Application 10-2016-0142435 filed on October 28, 2016, the entire disclosure of which is incorporated herein by reference. technical field [0003] The invention relates to a composition for solar battery electrodes and electrodes prepared using the same. More specifically, the present invention relates to a composition for a solar cell electrode having improved contact efficiency with a wafer, thereby exhibiting excellent contact resistance and series resistance, and the present invention relates to an electrode made using said composition. Background technique [0004] The solar cell generates electricity by utilizing the photovoltaic effect (photovoltaic effect) of a p-n junction (p-n junction) that converts photons of sunlight into electricity. In a solar cell, a front electrode and a rear electrode are formed on upper and lower surfaces of a semiconductor wafer...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B1/22H01L31/0224C03C3/00
CPCC03C3/00H01B1/22H01L31/022425C03C3/122C03C4/14C03C8/02C03C8/04C03C8/08C03C8/10C03C8/18C03C8/22Y02E10/50C03C8/14H01L31/02167H01L31/032C03C8/16C03C2204/00C03C2205/00H01L31/02168
Inventor 朴相熙丘显晋金泰俊朴珉秀李智先郑名成河贤辰
Owner CHANGZHOU JUHE NEW MATERIAL CO LTD