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A kind of light-cured EVA film for flexible or thin-film solar cell 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: 2016-07-06
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.) 100Kg; nano aluminum powder 0.0001Kg; cross-linking curing agent (2,5-dimethyl-2,5 double (tert-butyl) Peroxygen hexane) 0.8Kg; ultraviolet light absorber (2-hydroxy-4 methoxybenzophenone) 0.1Kg; antioxidant (four [B-(3,5-di-tert-butyl-4- Hydroxyphenyl) propionic acid] pentaerythritol ester) 0.1Kg; amine light stabilizer (bis(1-octyloxy-2,2,6,6-tetramethyl-4-piperidyl) sebacate) 0.2 Kg, stir and blend uniformly with a stirrer at a temperature of -10-5℃;

[0024] (2) Introduce the above blends into a screw mixing extruder for blending and extruding. The temperature is controlled at 80°C. The extrudates are filtered through a 180-mesh filter and metered and extruded (the pressure difference between the inlet and outlet of the metering pump is 2MPa). The film thickness is 50UM, air cooling at 10°C, drafting at 2 times the draft rate, release paper coating, winding and other processes to obtain a light-c...

Embodiment 2

[0026] (1) EVA (34% vinyl acetate content) (Guangzhou Xieyu Chemical Co., Ltd.) 100Kg; nano aluminum powder 0.1Kg; cross-linking curing agent (2,5-dimethyl-2,5 double (tert-butyl) Peroxygen hexane) 0.5Kg; UV absorber (2-hydroxy-4methoxybenzophenone) 0.12Kg; Antioxidant (tris(nonylbenzene) phosphite) 0.2Kg; Amine light Stabilizer (bis(1-octyloxy-2,2,6,6-tetramethyl-4-piperidinyl) decane diester) 0.1Kg, stir with a stirrer at -10-40℃ Mix well

[0027] (2) Introduce the above blend into a screw mixing extruder for blending and extruding. 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 metering pump inlet and outlet is 2MPa) , Cast film thickness 50UM, 10℃ air cooling, 2 times draft rate drawing, release paper coating, winding and other processes, to obtain a flexible or thin-film solar cell light-cured EVA film. The performance of thin-film solar cells using this film is 6.6% hi...

Embodiment 3

[0029] (1) EVA100 (36% vinyl acetate content) (Guangzhou Xieyu Chemical Co., Ltd.) Kg; nano aluminum powder, 0.05Kg; cross-linking curing agent (1,1-(di-tert-butyl peroxide) 3,3, 5-trimethylcyclohexane) 1.25Kg; ultraviolet light absorber (2-hydroxy-4 n-octyloxybenzophenone) 0.16Kg; antioxidant (tris(monononylbenzene and dinonyl) Benzene) mixed ester) 0.15Kg; amine light stabilizer ((2,2,6,6-tetramethyl-4-piperidinyl) sebacate) 0.15Kg, use a stirrer at 0-10℃ Stir and blend uniformly under the environment;

[0030] (2) Introduce the above blends into a screw mixing extruder for blending and extruding. The temperature is controlled at 83°C. The extrudates are filtered through a 180-mesh filter and metered and extruded (the pressure difference between the metering pump inlet and outlet is 2MPa). The film thickness is 50UM, air cooling at 10°C, drafting at 2 times the draft rate, release paper coating, winding and other processes to obtain a light-cured EVA film for flexible or thin-...

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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-curing EVA film for flexible or thin-film solar cells and a preparation method thereof. By using the film to encapsulate the light-incident surface of the flexible or thin-film solar cell, the efficiency of the flexible or thin-film solar cell is directly improved. 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 generate photoelectric conversion reaction after absorbing light energy. 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 selenium and other multi-element compounds; 3. Solar cells made of functiona...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08L23/28C08L23/26C08K13/02C08K3/08B29C47/92H01L31/048B29C48/92
CPCB29C48/92B29C2948/92704C08J5/18C08J2323/08C08K3/08C08K3/34C08K13/02C08K2003/0812C08K2201/011C08L2203/16C08L2203/204H01L31/0481C08L23/0853C08L23/28B29C48/0018B29C48/08B29C48/365B29C48/911B29C2948/92514B29C2948/92828B29C2948/92895B29C2948/92904B32B17/10788Y02E10/50
Inventor 张迎晨吴红艳
Owner ZHONGYUAN ENGINEERING COLLEGE
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