Glass powder for solar cell right side silver paste

A solar cell and glass powder technology, applied in the field of glass powder, can solve the problems of low electrode adhesion and high ohmic contact resistance of cells, and achieve the effect of dense electrodes, not easy to bond, and good sintering activity

Inactive Publication Date: 2014-08-20
NINGBO GUANGBO NEW NANOMATERIALS STOCK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after the sintering of the above-mentioned compositions, the ohmic contact resistance of the battery sheet will be high, and the adhesion of the electrode is low, which cannot form a good ohmic contact.

Method used

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  • Glass powder for solar cell right side silver paste
  • Glass powder for solar cell right side silver paste
  • Glass powder for solar cell right side silver paste

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Experimental program
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Effect test

Embodiment

[0019] The percentage by weight of the glass frit raw material used in the present invention in the total glass composition is listed in Table 1, wherein the zinc compound and bismuth compound are also listed in the table.

[0020] Each component and consumption of table 1 embodiment 1-14 glass frit

[0021]

[0022]

[0023] The preparation steps of the glass powder adopted in the present invention are:

[0024] (1) Accurately weigh the glass frits of each component according to the requirements of the formula, mix them evenly in a mortar, and put them in a drying oven with circulating ventilation. The drying temperature is controlled at 90-150°C for 30 minutes. This process is quite It is used to pre-fire the glass frit and evaporate part of the water at the same time;

[0025] (2) Pour the glass frit to be fired into a platinum alloy crucible, melt it in a lifting furnace, heat it to a peak temperature of 900°C-1200°C, and melt it for 1-2 hours to make the melt compl...

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Abstract

The invention discloses a glass powder for a solar cell right side silver paste. The glass powder is characterized by mainly comprising the following components by weight: 21-5% of SiO, 30.2-4% of Al2O, 1-5% of B2O3, 5-10% of ZnO or Zn3(PO4)2, 0.1-1.5% of BaCO3, 0.1-1.0% of MgO, 15-25% of TeO2, 0.1-1.0% of P2O5, and 60-70% of a lead compound and a bismuth compound. The glass powder provided by the invention can promote the sintering of a conductive silver powder, realize more compact electrode sintering, is conducive to the formation of a good ohmic contact, and has the advantages of reducing the solar cell series resistance and increasing electrode adhesion.

Description

technical field [0001] The invention belongs to the technical field of solar conductive paste, and in particular relates to a glass powder used for the front silver paste of a solar cell. Background technique [0002] With the reduction of European government subsidies to enterprises and the EU's anti-dumping of photovoltaic modules exported from China, the domestic photovoltaic industry has entered a trough from the prosperity before 2010, and the entire domestic photovoltaic market has been bleak. In order to save the photovoltaic market, the government began to initiate subsidy policies for domestic photovoltaic enterprises. At the same time, the government departments came forward to negotiate with the EU. After a series of measures, the solar photovoltaic market began to improve from the second half of 2013, and enterprises turned losses into profits. At present, solar cells in photovoltaic power generation are still dominated by crystalline silicon solar cells, with a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C12/00
Inventor 宋财根王利平
Owner NINGBO GUANGBO NEW NANOMATERIALS STOCK
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