Photocuring EVA (ethylene-vinyl acetate) film for flexible or thin-film solar cells and preparation method thereof

A technology of solar cells and photocuring agents, applied in chemical instruments and methods, circuits, photovoltaic power generation, etc., can solve problems such as low efficiency of solar cells

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

[0023] (1) EVA (vinyl acetate content 28%) (Guangzhou Xieyu Chemical Co., Ltd.) 100 Kg; nano-aluminum powder 0.0001Kg; cross-linking curing agent (2,5-dimethyl-2,5 bis(tert-butyl base peroxy) hexane) 0.8Kg; UV absorber (2-hydroxy-4 methoxybenzophenone) 0.1 Kg; antioxidant (tetra[B-(3,5-di-tert-butyl-4 -hydroxyphenyl) propionate] pentaerythritol ester) 0.1 Kg; amine light stabilizer (bis(1-octyloxy-2,2,6,6-tetramethyl-4-piperidinyl)decanediate) 0.2 Kg, stir and blend evenly with a stirrer at a temperature of -10-5°C;

[0024] (2) Import the above blend into a screw mixing extruder for blending and extrusion, the temperature is controlled at 80°C, the extrudate is filtered through a 180-mesh filter, metered and extruded (the pressure difference between the inlet and outlet of the metering pump is 2MPa), flow A light-cured EVA film for flexible or thin-film solar cells is obtained by extending the film thickness to 50 UM, air cooling at 10°C, drawing at 2 times the drafting rati...

Embodiment 2

[0026] (1) EVA (vinyl acetate content 34%) (Guangzhou Xieyu Chemical Co., Ltd.) 100 Kg; nano-aluminum powder 0.1 Kg; cross-linking curing agent (2,5-dimethyl-2,5 bis(tert-butyl peroxy) hexane) 0.5 Kg; UV absorber (2-hydroxy-4 methoxybenzophenone) 0.12 Kg; antioxidant (tris(nonylphenyl) phosphite) 0.2 Kg; amines Light stabilizer (bis(1-octyloxy-2,2,6,6-tetramethyl-4-piperidinyl) decanedate) 0.1 Kg, stir with a stirrer at -10-40°C blend evenly;

[0027](2) Import the above blend into a screw mixing extruder for blending and extrusion, the temperature is controlled at 80-90°C, the extrudate is filtered through a 180-mesh filter, and metered and extruded (the pressure difference between the inlet and outlet of the metering pump is 2MPa) , cast film thickness 50UM, 10 ℃ air cooling, 2 times drafting ratio drafting, release paper coating, coiling and other processes to obtain a light-cured EVA film for flexible or thin film solar cells. The performance of the thin-film solar cell ...

Embodiment 3

[0029] (1) EVA100 (vinyl acetate content 36%) (Guangzhou Xieyu Chemical Co., Ltd.) Kg; nano-aluminum powder, 0.05Kg; 5-trimethylcyclohexane) 1.25Kg; UV light absorber (2-hydroxyl-4 n-octyloxybenzophenone) 0.16 Kg; antioxidant (phosphite tris(mononylbenzene and dinonyl Benzene) mixed ester) 0.15 Kg; amine light stabilizer ((2,2,6,6-tetramethyl-4-piperidinyl) sebacate) 0.15 Kg, use a stirrer at 0-10 °C Stir and blend evenly under ambient conditions;

[0030] (2) Import the above blend into a screw mixing extruder for blending and extrusion, the temperature is controlled at 83°C, the extrudate is filtered through a 180-mesh filter, metered and extruded (the pressure difference between the inlet and outlet of the metering pump is 2MPa), flow A light-cured EVA film for flexible or thin-film solar cells is obtained by extending the film thickness to 50 UM, air cooling at 10°C, drawing at 2 times the drafting ratio, covering with release paper, and winding.

[0031] The performance...

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PUM

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Abstract

The invention relates to a photocuring EVA (ethylene-vinyl acetate) film for flexible or thin-film solar cells and a preparation method thereof. The film is prepared from the following components in parts by weight: 100 parts of EVA (ethylene-vinyl acetate) resin, 0.0001-0.1 part of nano aluminum powder, 0.5-1.25 parts of photocuring agent, 0.1-0.2 part of ultraviolet absorbance agent, 0-0.4 part of tackifier, 0.1-0.2 part of ultraviolet absorbent and 0.1-0.2 part of amine photostabilizer. The preparation method comprises the following steps: blending and extruding the EVA, nano aluminum powder, photocuring agent, tackifier, ultraviolet absorbent, antioxidant, hindered amine photostabilizer and the like by a screw blending and extrusion apparatus, filtering, introducing into a running die head, cooling, drawing, coiling and the like to obtain the photocuring EVA film for solar cells. The product is attached to the photic surface of the thin-film solar cell or used as an upper packaging film of the solar cell to directly enhance the generating efficiency of the flexible or thin-film solar cell.

Description

technical field [0001] The invention relates to a light-cured EVA film for flexible or thin-film solar cells and a preparation method thereof. The efficiency of flexible or thin-film solar cells is directly improved by using the film to encapsulate the light-incident surface of the flexible or thin-film solar cells. Background technique [0002] Among the projects of effective utilization of solar energy: photovoltaic utilization is the fastest growing and most dynamic research field in recent years. Generally, the production of solar cells is mainly based on semiconductor materials, which use photoelectric materials to absorb light energy and generate photoelectric conversion reactions to generate electricity. According to the different materials used, solar cells can be divided into: 1. Silicon solar cells; 2. Solar cells made of inorganic salts such as gallium arsenide III-V compounds, cadmium sulfide, copper indium selenide and other multi-component compounds; 3. Solar ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L23/28C08L23/26C08K13/02C08K3/08B29C47/92H01L31/048B29C48/92
CPCB29C47/0057B29C47/8815B29C47/0021B29C47/92B29C48/92B29C2948/92704C08J5/18C08J2323/08C08K3/08C08K3/34C08K13/02C08K2003/0812C08K2201/011C08L2203/16C08L2203/204H01L31/0481C08L23/0853C08L23/28B29C48/0018B29C48/08B29C48/365B29C48/911B29C2948/92514B29C2948/92828B29C2948/92895B29C2948/92904B32B17/10788Y02E10/50
Inventor 张迎晨吴红艳
Owner ZHONGYUAN ENGINEERING COLLEGE
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