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Glass raw material composition, inorganic glass powder, crystalline silicon solar battery aluminum conductive paste and preparation method of the crystalline silicon solar battery aluminum conductive paste

A technology of inorganic glass powder and glass raw material, which is applied to conductive materials dispersed in non-conductive inorganic materials, cable/conductor manufacturing, circuits, etc. The problem of high cost is to increase the oxidizing atmosphere, prevent high temperature reduction, and improve the boiling resistance.

Active Publication Date: 2015-05-27
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention solves the technical problems of high cost of aluminum conductive paste, poor photoelectric conversion efficiency and water boiling resistance of cells in the prior art

Method used

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  • Glass raw material composition, inorganic glass powder, crystalline silicon solar battery aluminum conductive paste and preparation method of the crystalline silicon solar battery aluminum conductive paste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] (1) Preparation of inorganic glass powder:

[0044] Weigh 50 parts by weight Bi 2 o 3 , 24 parts by weight B2 o 3 , 15 parts by weight SiO 2 , 2 parts by weight Sb 2 o 3 (median particle size D 50 2.5μm), 3 parts by weight Sb 2 o 5 (median particle size D 50 2.5 μm), 3.5 parts by weight CaO, 1.5 parts by weight MgO, 1.0 parts by weight Al 2 o 3 , 2 parts by weight Mg(NO 3 ) 2 , use a V-type mixer to mix the oxide powders evenly, transfer them into a corundum crucible, and place them in a silicon carbide rod furnace. Raise the temperature in the silicon carbide rod furnace to 550°C, keep it warm for 0.5h, then raise the temperature to 1250°C, keep it warm for 2h, quench and filter with water to obtain glass beads. Put the glass beads into the ball mill tank, according to the mass ratio of zirconia balls: glass beads: deionized water = 4:1:0.7, the tank speed is 300 rpm, wet milling for 6.5 hours, filtered and dried, and then dry milled for 0.5 h, The mass r...

Embodiment 2

[0050] The same steps as in Example 1 were used to prepare the inorganic glass powder S2 and the aluminum conductive paste S20 for crystalline silicon solar cells of this example, the difference being:

[0051] In step (1), weigh 52 parts by weight of Bi 2 o 3 , 24 parts by weight B 2 o 3 , 15 parts by weight SiO 2 , 1 part by weight Sb 2 o 3 (median particle size D 50 3μm), 2 parts by weight Sb 2 o 5 (median particle size D 50 2.5 μm), 3.5 parts by weight CaO, 1.5 parts by weight MgO, 1.0 parts by weight Al 2 o 3 , 0.5 parts by weight Mg(NO 3 ) 2 .

Embodiment 3

[0053] The same steps as in Example 1 were used to prepare the inorganic glass powder S3 and the aluminum conductive paste S30 for crystalline silicon solar cells of this example, the difference being:

[0054] In step (1), weigh 50 parts by weight of Bi 2 o 3 , 24 parts by weight B 2 o 3 , 15 parts by weight SiO 2 , 3 parts by weight Sb 2 o 3 (median particle size D 50 2μm), 5 parts by weight Sb 2 o 5 (median particle size D 50 2μm), 3.5 parts by weight CaO, 1.5 parts by weight MgO, 1.0 parts by weight Al 2 o 3 , 4.5 parts by weight Ca(NO 3 ) 2 .

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Abstract

The invention provides a glass raw material composition. The glass raw material composition comprises, by weight, 35 to 60 parts of Bi2O3, 10 to 30 parts of B2O3, 10 to 20 parts of SiO2, 1 to 5 parts of CaO, 0.5 to 5 parts of MgO, 0 to 5 parts of Al2O3, 3 to 8 parts of Sb2O3 and Sb2O5, and a nitrate of which the content is 0.5 to 1.5 times the content of Sb2O3, wherein the nitrate is magnesium nitrate or calcium nitrate. The invention also provides inorganic glass powder prepared from the glass raw material composition, crystalline silicon solar battery aluminum conductive paste prepared from the inorganic glass powder, and a preparation method of the crystalline silicon solar battery aluminum conductive paste. The clear inorganic glass powder can be prepared from the glass raw material composition and thus a battery piece prepared from the crystalline silicon solar battery aluminum conductive paste containing the inorganic glass powder has high photoelectric conversion efficiency and high water boiling resistance.

Description

technical field [0001] The invention belongs to the technical field of crystalline silicon solar cells, and in particular relates to a glass raw material composition, glass powder, an aluminum conductive paste for crystalline silicon solar cells and a preparation method thereof. Background technique [0002] Aluminum conductive paste is one of the electronic information materials, and it is also the main auxiliary material for making crystalline silicon solar cells, which occupies a considerable proportion in the cost of the battery materials. Crystalline silicon solar cells are an inexhaustible green and environmentally friendly renewable energy source, and international research is currently very active. The composition, production, printing and sintering process of aluminum paste have a great influence on the performance of crystalline silicon solar cells. At present, international large companies and some research institutes in my country have developed relatively matur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C3/064C03C12/00H01B1/22H01B13/00
Inventor 谭伟华
Owner BYD CO LTD
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