Positive electrode slurry of solar battery and glass powder

A technology for solar cells and front electrodes, applied in the field of solar cells, can solve the problems of narrow process window, large series resistance, low photoelectric conversion efficiency, etc., and achieve the effects of reducing series resistance, increasing photoelectric conversion efficiency, and high-quality open circuit voltage

Active Publication Date: 2013-01-16
SOLTRIUM ADVANCED MATERIALS TECH LTD SHENZHEN
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Problems solved by technology

[0005] In view of this, the purpose of the present invention is to provide a solar cell front electrode paste, which solves the technical problems of narrow process window of crystalline silicon solar cells, large series resistance and low photoelectric conversion efficiency in the prior art, and a glass frit

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  • Positive electrode slurry of solar battery and glass powder
  • Positive electrode slurry of solar battery and glass powder
  • Positive electrode slurry of solar battery and glass powder

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Embodiment Construction

[0030] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0031] An embodiment of the present invention provides a solar cell front electrode paste, comprising the following components in parts by weight:

[0032] Silver powder 70~90 parts

[0033] Glass powder 0.5~10 parts

[0034] Organic carrier 5~25 parts

[0035] Wherein, every 100 parts of glass powder comprises the component of following parts by weight:

[0036] Glass network former 5~35 parts

[0037] Glass network intermediate 5~30 parts

[0038] Heavy metal flux 50~90 parts.

[0039] In 100 parts by weight of the conductive paste, the parts by weight of the silver powder are 70-90 parts b...

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Abstract

The invention is applicable to the technical field of solar batteries and provides positive electrode slurry of a solar battery and glass powder. According to the positive electrode slurry of the solar battery, the glass powder comprising a glass network former, a glass network intermediate and a heavy metal fluxing body is adopted and the weight parts of the glass network intermediate are controlled, so that the series resistance of a crystalline silicon solar battery is greatly reduced, the photovoltaic conversion efficiency of the battery is obviously enhanced, and the crystalline silicon solar battery can achieve high-quality open circuit voltage, short circuit current, series resistance, filling factors and photovoltaic conversion efficiency in a wider process window range.

Description

technical field [0001] The invention belongs to the technical field of solar cells, in particular to a solar cell positive electrode paste and glass powder. Background technique [0002] A crystalline silicon solar cell generally consists of a front electrode, an anti-reflection layer, an emitter, a P / N junction region, a base, an aluminum back field and a back electrode. Among them, the front electrode supplies power to the outside by collecting the photogenerated carriers in the adjacent area. [0003] The front electrode is usually obtained by screen-printing a conductive paste with a certain pattern on the anti-reflection layer of the light-receiving surface of the crystalline silicon solar cell, and then undergoing high-temperature heat treatment, which metallizes the solar cell. During the metallization process, after high-temperature heat treatment, the glass powder is melted, and the molten glass frit wets the surrounding silver powder to promote the sintering of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/22H01B1/16C03C12/00H01L31/0224
CPCH01L31/0224H01L31/022425H01B1/16Y02E10/547H01L31/068H01B1/22
Inventor 郭冉李德林茆胜
Owner SOLTRIUM ADVANCED MATERIALS TECH LTD SHENZHEN
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