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EVA film for flexible or thin film solar cell 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 efficiency of solar cells, achieve the effects of improving overall efficiency, improving performance, and preventing light escape

Inactive Publication Date: 2014-07-02
ZHONGYUAN ENGINEERING COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the optical resonance also causes the nanoparticles to absorb light, which means the solar cell will be less efficient

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Mix EVA (vinyl acetate content 28%, Guangzhou Xieyu Chemical Co., Ltd.) 100kg; nano-aluminum powder 0.0001, stir and blend evenly with a stirrer at a temperature of -10~40°C; import the above blend into the screw to mix and extrude The extruder is blended and extruded, and the temperature is controlled at 80~90°C. The extruded product is filtered, metered and extruded, cast, cooled, stretched, drawn, coiled and other processes to obtain the EVA film for solar energy encapsulation.

[0019] The performance of the thin-film solar cell using the thin film is 6.8% higher than that of the unused thin-film solar cell.

Embodiment 2

[0021] EVA (36% vinyl acetate content, Guangzhou Xieyu Chemical Co., Ltd.) 100kg; nano-aluminum powder 0.0008, stir and blend evenly with a stirrer at a temperature of -10~40°C; import the above blend into the screw for mixing and extrusion The extruder is blended and extruded, and the temperature is controlled at 80~90°C. The extruded product is filtered, metered and extruded, cast, cooled, stretched, drawn, coiled and other processes to obtain the EVA film for solar energy encapsulation.

[0022] The performance of the thin-film solar cell using the thin film is 6.9% higher than that of the unused thin-film solar cell.

Embodiment 3

[0024] EVA (32% vinyl acetate content, Guangzhou Xieyu Chemical Co., Ltd.) 100kg; nano-aluminum powder 0.005, stir and blend evenly with a stirrer at a temperature of -10~40°C; import the above blend into the screw for mixing and extrusion The extruder is blended and extruded, and the temperature is controlled at 80~90°C. The extruded product is filtered, metered and extruded, cast, cooled, stretched, drawn, coiled and other processes to obtain the EVA film for solar energy encapsulation.

[0025] The performance of the thin-film solar cell using the thin film is 3.8% higher than that of the unused thin-film solar cell.

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PUM

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Abstract

Provided are an EVA film for a flexible or thin film solar cell and a preparation method thereof. The EVA film for the flexible or thin film solar cell is prepared through the following components, by weight, 100 parts of EVA resin and 0.0001-0.1 part of Nano-Al powder. The materials are guided into a tape casting die head after mixing, extruding and filtering, and the EVA film for the solar cell is obtained through cooling, stretching, reeling and other procedures. The product manufactured through the preparation method is attached to a light receiving surface of the thin film solar cell or serves as an upper encapsulation film of the solar cell, and the electric generating efficiency of flexible or thin film solar cell can be improved directly.

Description

technical field [0001] The invention relates to a flexible or thin-film solar cell and a preparation method thereof. The efficiency of the flexible or thin-film solar cell is directly improved by printing the film on the light-incident surface of the flexible or thin-film solar cell. Background technique [0002] Ethylene-vinyl acetate copolymer (EVA) demand is driven by rising demand for solar panels. Ethylene and vinyl acetate copolymer is the most important product in ethylene copolymer, and it is generally referred to as EVA in foreign countries. EVA resin is characterized by good softness, rubber-like elasticity, good flexibility at -50°C, good transparency and surface gloss, good chemical stability, anti-aging and ozone resistance. Well, non-toxic. Good blendability with fillers, good coloring and molding processability. The short-term goal of Asian manufacturers is to expand the production of vinyl acetate content of 30~33% to meet the needs of the solar panel mar...

Claims

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Application Information

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IPC IPC(8): H01L51/44H01L51/48
CPCY02E10/549H10K71/00H10K30/87H10K30/88
Inventor 张迎晨吴红艳
Owner ZHONGYUAN ENGINEERING COLLEGE
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