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Solar cell back plate and solar cell

A solar cell and backplane technology, applied in the field of solar cells, can solve problems such as difficulty in blocking, detachment of the oxide layer, and reduction of the aging resistance of the backplane, and achieve enhanced aging resistance, excellent gas barrier performance, and good barrier properties. Gas effect

Active Publication Date: 2013-02-27
CHONGQING YUNTIANHUA HIGH END NEW MATERIALS DEV CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this backplane has the following problems: the oxide layer is easy to detach from the base film layer, so it is difficult to play a blocking role
Japanese Patent Application Laid-open No. 6-22976 proposed on the basis of the above-mentioned patents to apply a cross-linking reaction product of polyester and isocyanate between the oxide layer and the base film layer, although this method can improve the oxide layer and the base film layer. However, the cross-linking reaction product of polyester and isocyanate will hydrolyze the ester group under high temperature and high humidity conditions, resulting in a decrease in the gas barrier properties of the solar backsheet, and cannot effectively prevent the erosion of water vapor and oxygen , reducing the aging resistance of the backplane

Method used

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preparation example Construction

[0040] The preparation method of the inorganic layer is not limited in the present invention, and may be a vapor phase deposition method or a liquid phase method well known to those skilled in the art, preferably a sputtering method or an ion plating method. In the present invention, the barrier layer is preferably prepared according to the following method: an inorganic film of silicon oxide is plated on an organic layer made of polyethylene naphthalate by an ion plating process to obtain a barrier layer.

[0041]The inorganic layer prepared by vapor phase deposition method or liquid phase method can be combined with the organic layer to form a barrier layer without a binder, and the inorganic oxide and / or inorganic nitride have anti-corrosion and anti-aging properties, not It will be corroded by external conditions such as high temperature and high humidity. The barrier layer obtained by compounding the inorganic layer and the organic layer with excellent gas barrier propert...

Embodiment 1

[0067] The weather-resistant layer and the barrier layer are bonded together by an adhesive layer. The bonding layer is made of polyurethane adhesive with a thickness of 10 μm; the weather-resistant layer is made of polyvinylidene fluoride with a thickness of 30 μm, and the weather-resistant layer is treated with surface corona to make its dyne value is 56; the barrier layer is obtained by compounding an organic layer and an inorganic layer, and the composite method is: through an evaporation process, an inorganic layer made of silicon oxide is evaporated on the organic layer to obtain a barrier layer, wherein the The organic layer is made of polyethylene naphthalate and has a thickness of 80 μm, and the thickness of the inorganic layer is 50 μm. The bonding layer is composited with the inorganic layer in the barrier layer.

[0068] Through the double-layer co-extrusion process, the organic layer in the barrier layer is combined with the structural reinforcement layer. The st...

Embodiment 2

[0071] The weather-resistant layer and the barrier layer are bonded together by an adhesive layer. The bonding layer is made of polyurethane adhesive with a thickness of 10 μm; the weather-resistant layer is made of polyvinylidene fluoride with a thickness of 30 μm, and the weather-resistant layer is treated with surface corona to make its dyne value is 56; the barrier layer is obtained by compounding an organic layer and an inorganic layer, and the composite method is: through an evaporation process, an inorganic layer made of silicon oxide is evaporated on the organic layer to obtain a barrier layer, wherein the The organic layer is made of polyethylene naphthalate and has a thickness of 80 μm, and the thickness of the inorganic layer is 30 μm. The bonding layer is composited with the inorganic layer in the barrier layer.

[0072] Through the double-layer co-extrusion process, the organic layer in the barrier layer is combined with the structural reinforcement layer. The st...

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Abstract

The invention provides a solar cell back plate. The solar cell back plate comprises a weather-resistant layer, a bonding layer combined on the weather-resistant layer, a barrier layer combined on the bonding layer, a structure enhancement layer, and a bonding reflective layer combined on the structure enhancement layer, wherein the barrier layer comprises an inorganic layer combined on the bonding layer, and an organic layer combined on the inorganic layer; the inorganic layer is made from an inorganic oxide and / or an inorganic nitride; the organic layer is made from polyethylene naphthalate; and the structure enhancement layer is combined on the organic layer in the barrier layer. The solar cell back plate prepared by the invention has high gas barrier property, and can effectively prevent erosion of vapor and oxygen, thereby enhancing the anti-aging property of the back plate and prolonging the service life of the solar cell.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and in particular relates to a solar cell backboard and a solar cell. Background technique [0002] Solar energy is a clean, non-polluting and inexhaustible energy source. At present, the utilization of solar energy is mainly converted into electrical energy through solar cell components. According to the different materials used, solar cells can be divided into silicon solar cells, multi-component compound thin-film solar cells, polymer multilayer modified electrode solar cells, nanocrystalline solar cells, organic solar cells, etc. Among them, silicon solar cells are currently the most mature solar cells and occupy a dominant position in applications. Silicon solar cells can be divided into monocrystalline silicon solar cells, polycrystalline silicon thin film solar cells and amorphous silicon thin film solar cells. [0003] Existing crystalline silicon solar cell modules mainly include p...

Claims

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Application Information

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IPC IPC(8): H01L31/048H01L31/052B32B27/36H01L31/049
CPCY02E10/52Y02E10/50
Inventor 王守立吕新坤江林谭海军
Owner CHONGQING YUNTIANHUA HIGH END NEW MATERIALS DEV CO LTD
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