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A kind of thin film for solar battery backplane and preparation method thereof

A technology of solar cells and thin films, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of low photoelectric conversion efficiency, achieve high photoelectric conversion efficiency, good moisture resistance, and improve hardness and heat resistance.

Active Publication Date: 2015-08-19
MING CROWN ADVANCED MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Thin films for solar cell back plates have an impact on the photoelectric conversion efficiency of solar cell components, and the photoelectric conversion efficiency of solar cell components made of thin films for solar cell back plates in the prior art is low

Method used

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  • A kind of thin film for solar battery backplane and preparation method thereof

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Effect test

Embodiment 1

[0026] A film for a solar battery back plate, the thickness of the film is 15 μm, and the film includes the following raw materials in parts by weight: 10 parts of polyolefin resin, 90 parts of adhesive resin and 5 parts of functional masterbatch. The polyolefin resin is a mixture of chlorinated polyethylene, ethylene-butene copolymer and ethylene-cycloolefin copolymer in a weight ratio of 4:2:1; the adhesive resin is polyvinyl butyral .

[0027] The functional master batch includes the following raw materials in parts by weight: 5 parts of polyolefin resin powder, 25 parts of adhesive resin powder and 65 parts of functional auxiliary agent. The polyolefin resin powder is a mixture of cross-linked polyethylene, ethylene-octene copolymer and polypropylene in a weight ratio of 2:3:1; the adhesive resin powder is ethylene-vinyl acetate copolymer .

[0028] The functional auxiliary agent includes the following raw materials in parts by weight: 2 parts of fluorescent agent, 60 pa...

Embodiment 2

[0033] A film for a solar battery back plate, the thickness of the film is 45 μm, and the film includes the following raw materials in parts by weight: 20 parts of polyolefin resin, 80 parts of adhesive resin and 8 parts of functional masterbatch. The polyolefin resin is a mixture of polyethylene, ethylene-propylene copolymer and polypropylene in a weight ratio of 5:3:1; the polyethylene is made of low-density polyethylene and high-density polyethylene in a weight ratio of 2: 1; the adhesive resin is a mixture of ethylene-vinyl acetate copolymer and polyvinyl butyral in a weight ratio of 3.5:1.

[0034] The functional masterbatch includes the following raw materials in parts by weight: 10 parts of polyolefin resin powder, 20 parts of adhesive resin powder and 73 parts of functional auxiliary agent. The polyolefin resin powder is a mixture of polyethylene, ethylene-propylene copolymer and polypropylene in a weight ratio of 4:2:1; the polyethylene is made of low-density polyethy...

Embodiment 3

[0040] A film for a solar battery back plate, the thickness of the film is 75 μm, and the film includes the following raw materials in parts by weight: 40 parts of polyolefin resin, 60 parts of adhesive resin and 10 parts of functional masterbatch. The polyolefin resin is a mixture of polyethylene, ethylene-propylene copolymer and polypropylene in a weight ratio of 6:4:1; the polyethylene is made of linear low-density polyethylene and high-density polyethylene in a weight ratio of 2.1 : a mixture composed of 1; the adhesive resin is a mixture composed of ethylene-vinyl acetate copolymer and polyvinyl butyral in a weight ratio of 4:1.

[0041] The functional masterbatch includes the following raw materials in parts by weight: 15 parts of polyolefin resin powder, 15 parts of adhesive resin powder and 82 parts of functional auxiliary agent. The polyolefin resin powder is a mixture of polyethylene, ethylene-propylene copolymer and polypropylene in a weight ratio of 5:3:1; the poly...

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Abstract

The invention relates to the technical field of solar cell back plate, and particularly to a film used for a synergistic type solar cell back plate and a preparation method thereof. The film is 15-150 microns in thickness and comprises the following raw materials in parts by weight: 10-90 parts by weight of polyolefin resin, 10-90 parts by weight of adhesive resin and 5-25 parts by weight of functional master batch; the preparation method of the film comprises the following steps of: mixing a polyolefin resin powder material, an adhesive resin powder material and a functional assistant, and extruding the mixture at 100-250 DEG C by adopting a screw extruder to obtain the functional master batch; mixing the prepared functional master batch with the polyolefin resin and the adhesive resin, and preparing the film at 100-250 DEG C by adopting an extrusion tape casting mode or a blow molding mode. The film disclosed by the invention can absorb ultraviolet lights of 10-400 nm, can convert and utilize optical waves which an existing battery piece cannot convert, can widen a solar spectrum absorption and conversion range, and enables a prepared solar cell component to have high photoelectric conversion efficiency.

Description

technical field [0001] The invention relates to the technical field of solar battery backplanes, in particular to a thin film for solar battery backplanes and a preparation method thereof. Background technique [0002] With the increasing scarcity of traditional energy sources, the development and utilization of new energy sources around the world has increasingly become the focus of worldwide attention. Global attention is conducive to the industrialization of energy conversion. The current commercial crystalline silicon solar cells mainly absorb and utilize visible light of 400-700nm, and basically do not absorb and utilize light in the ultraviolet band below 400nm, resulting in part of the energy of sunlight not being effectively utilized, which affects solar energy to a certain extent. The efficiency of the cell makes the efficiency of the current commercial crystalline silicon solar cells basically at 13-15%, and it is difficult to improve to a greater extent under the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/049H01L31/048H01L31/18
CPCY02E10/50Y02P70/50
Inventor 张鹏纪孝熹方艳吴松董青山高小君唐春峰张曙光
Owner MING CROWN ADVANCED MATERIAL CO LTD
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