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Composition for forming solar cell electrode and electrode prepared using same

A solar cell and composition technology, applied to conductive materials dispersed in non-conductive inorganic materials, circuits, photovoltaic power generation, etc., can solve the problems of efficiency degradation, solar cell contact resistance increase, etc.

Active Publication Date: 2020-11-24
CHANGZHOU JUHE NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this case, there may be a problem of deterioration in efficiency due to an increase in the contact resistance of the solar cell

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

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0084] As an organic binder, 1.0% by weight of ethyl cellulose (STD4, Dow Chemical Company) was sufficiently dissolved in 6.5% by weight of butyl carbitol at 60° C., and bonded thereto 89.0% by weight of spherical silver powder (AG-4-8, DowaHightech Co., Ltd.) with an average particle diameter of 1.0 μm, 3.0% by weight of glass frit, 0.2% by weight The dispersant BYK 102 (BYK-chemie (BYK-chemie)) and the thixatrol ST (Elementis Co., Ltd.) of 0.3% by weight of the thixotropic agent were carried out in a 3-roll kneader Mixing and kneading prepares a composition for solar cell electrodes. Here, as the glass frit, the amounts of the first glass frit and the second glass frit in Table 1 and Table 2 are listed in Table 3.

example 2 to example 4

[0086] A composition for a solar cell electrode was prepared in the same manner as in Example 1, except that the types and amounts of the first glass frit and the second glass frit were changed as listed in Table 3.

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Abstract

A composition for solar cell electrodes and an electrode made using the composition. The composition for a solar cell electrode comprises: a conductive powder; a glass frit; and an organic vehicle, wherein the glass frit comprises a first glass frit having a melting temperature (Tm) of 400°C to 600°C and a melting temperature of 650°C to 650°C A mixture of the second frit at 800°C.

Description

technical field [0001] The invention relates to a composition for solar cell electrodes and an electrode made by using the composition. More specifically, the present invention relates to a composition for a solar cell electrode and an electrode produced using the composition, the composition comprising a first glass frit and a second glass frit having melting temperatures respectively within specific ranges. A blend of glass frits and thus can exhibit good properties in terms of contact resistance and line resistance while providing high tensile strength (pull strength) and thus high reliability. Background technique [0002] A solar cell generates electricity by utilizing the photovoltaic effect (photovoltaic effect) of a p-n junction (p-njunction) that converts photons of sunlight into electricity. In a solar cell, front and rear electrodes are respectively formed on the upper and lower surfaces of a semiconductor wafer or substrate having a p-n junction. Then, a photov...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B1/22H01L31/0224
CPCH01B1/22H01L31/022425Y02E10/50C03C8/12C03C8/14
Inventor 朴珉秀河贤辰金泰俊朴相熙郑名成
Owner CHANGZHOU JUHE NEW MATERIAL CO LTD