Silver paste and its use for manufacturing photovoltaic modules
A photovoltaic module and silver paste technology, applied in the direction of final product manufacturing, sustainable manufacturing/processing, electrical components, etc., to achieve the effect of overall performance improvement
Inactive Publication Date: 2015-09-02
DARFON ELECTRONICS (SUZHOU) CO LTD +1
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- Description
- Claims
- Application Information
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Problems solved by technology
[0006] However, no silver paste that can effectively promote the formation of a microstructure conducive to tunneling conductivity has been proposed so far.
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[0036] A silver paste according to a preferred embodiment of the present invention includes an organic vehicle, glass powder, and silver-containing material powder. The silver-containing material powder may be one of silver powder, organometallic silver compound powder or silver oxide powder. In particular, the silver paste of the present invention further comprises a silver microcrystal precipitation promoter in an amount of about 0.01-0.6% by weight of the silver paste. Thereby, when the silver paste of the present invention is used to manufacture the front electrode of the photovoltaic module, a large amount of silver microcrystals are precipitated at the interface between the interface glass layer and the silicon wafer, and there are also a large amount of nanometer crystals in the interface glass layer. The precipitation of silver particles improves the overall efficiency of the photovoltaic module manufactured by using the silver paste of the present invention.
[0037]...
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The invention relates to silver paste and an application of the silver paste to manufacturing of a photovoltaic assembly. The silver paste comprises an organic carrier, glass powder and silver-containing material powder which is silver powder, organic metal silver compound powder or silver oxide powder, especially the silver paste further comprises a silver micro-crystallization separation accelerant, wherein the weight percentage of the silver micro-crystallization separation accelerant to the silver paste is 0.01-0.6%. Compared with the prior art, the silver and the application of the silver paste to the manufacturing of the photovoltaic assembly, disclosed by the invention, have the advantages that when the silver paste is used for manufacturing a front-surface electrode of the photovoltaic assembly, a great amount of silver micro-crystal separates out in a joint between an interface glass layer and a silicon wafer, and a large number of nanometer silver particles also separate out in the interface glass layer, so that the integral efficiency of the photovoltaic assembly manufactured by utilizing the silver paste disclosed by the invention is improved.
Description
technical field [0001] The present invention relates to a kind of silver paste (silver paste) and its use for manufacturing photovoltaic components (photovoltaic device), and in particular, when it is used to manufacture front electrodes of photovoltaic components, it can promote the formation of (tunneling conductivity) microstructure silver paste. Background technique [0002] Photovoltaic devices are widely used because they convert easily obtained energy from light sources (such as sunlight) into electricity to control electronic devices such as calculators, computers, heaters, etc. . The most common photovoltaic modules are silicon-based solar cells. [0003] Silicon-based solar cells refer to solar cells made using crystalline silicon substrates from monocrystalline silicon rods or polycrystalline silicon ingots. In the prior art of forming electrodes on silicon-based solar cells, metal paste is first applied on the front and back surfaces of silicon-based solar cel...
Claims
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IPC IPC(8): H01B1/22H01L31/18
CPCY02P70/50
Inventor 陈威廷张天益许坤章石正玲
Owner DARFON ELECTRONICS (SUZHOU) CO LTD