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Preparation method for solar cell spectrum conversion polymeric membrane

A solar cell and spectrum conversion technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of reducing the light transmittance of the encapsulation film, the photoelectric conversion efficiency of solar cells, limitations, uneven distribution of spectrum conversion materials, etc. The effect of light transmittance and utilization of sunlight, long life and high photoelectric conversion efficiency

Inactive Publication Date: 2013-08-21
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Prog. Photovolt: Res. Appl. 2011; 19:345~351 mentioned that encapsulating the film with conversion properties on the surface of solar cells improves the photoelectric conversion efficiency to a certain extent, but this film only has up-conversion Performance or only down-conversion performance, unable to simultaneously and fully convert high-energy ultraviolet light and low-energy infrared light into visible light or near-infrared light in sunlight
In addition, in Chinese patents with publication numbers CN200710302510.4 and CN201110021649.8, it is also mentioned that spectral conversion materials are added to the encapsulation film on the surface of solar cells, but the methods of adding the above two patents are limited to physical blending
The physical blending of spectral conversion materials and polymer films cannot avoid local agglomeration of spectral conversion material particles, resulting in uneven distribution of spectral conversion materials in the encapsulation film, thereby reducing the light transmittance of the encapsulation film and the photoelectric conversion of solar cells efficiency

Method used

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Examples

Experimental program
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Embodiment 1

[0034] (1) Preparation of spectral conversion material: Take 15 g of silsesquioxane and add it to 30 mL of dichloromethane to prepare a silsesquioxane solution, then take 360 ​​mg of rare earth chloride and add it to the above silsesquioxane solution , under the protection of nitrogen environment, under the condition of 130 ℃, stirred for 20 minutes and cooled to room temperature naturally to obtain solution A; take 120 mg of ammonium fluoride and 80 mg of sodium hydroxide mixed and dissolved in 10 mL of anhydrous methanol and add the above solution In A, after stirring at 40°C for 20 minutes, methanol volatilized to obtain solution B; under the protection of nitrogen environment, the temperature of solution B was raised to 280°C, kept for 40 minutes, then cooled to room temperature naturally, and the spectral conversion material was washed with ethanol The particles are separated out, and the spectrum conversion material I is obtained after repeated centrifugation, separation ...

Embodiment 2

[0040] (1) Preparation of Spectrum Conversion Material: Spectrum Conversion Material I was prepared in the same steps and conditions as in Example 1.

[0041] (2) Treatment of polymer film: plasma treatment of polyethylene composite film or polyvinyl fluoride composite film under the same conditions as in Example 1.

[0042] (3) Chemical grafting of spectral conversion material and treated polymer film: take 115 parts of plasma-treated polyethylene composite film or polyvinyl fluoride composite film according to raw material components and parts by weight, 10 parts of spectral conversion material I, light Stabilizer poly[1-(2-hydroxyethyl)-2,2,6,6-tetramethyl-4-hydroxypiperidine succinate] or sebacic acid bis-2,2,6,6-tetra 0.20 part of methyl piperidinol ester, 0.20 part of initiator azobisisobutyronitrile, ultraviolet light absorber 2-hydroxyl-4-n-octyloxybenzophenone or 2-(2H-benzotriazole-2 - 0.3 parts of -6-(dodecyl)-4-methylphenol, using the same steps and reaction condi...

Embodiment 3

[0045] (1) Preparation of Spectrum Conversion Material: Spectrum Conversion Material I was prepared in the same steps and conditions as in Example 1.

[0046] (2) Treatment of polymer film: plasma treatment of polyethylene composite film or polyvinyl fluoride composite film under the same conditions as in Example 1.

[0047] (3) Chemical grafting of spectral conversion material and treated polymer film: 130 parts of plasma-treated polyethylene composite film or polyvinyl fluoride composite film, 15 parts of spectral conversion material I, and light Stabilizer poly[1-(2-hydroxyethyl)-2,2,6,6-tetramethyl-4-hydroxypiperidine succinate] or sebacic acid bis-2,2,6,6-tetra 0.50 part of methyl piperidinol ester, 0.40 part of initiator azobisisobutyronitrile, ultraviolet light absorber 2-hydroxyl-4-n-octyloxybenzophenone or 2-(2H-benzotriazole-2 - 0.5 parts of -6-(dodecyl)-4-methylphenol, using the same steps and reaction conditions as in step (3) in Example 1 to prepare a spectral co...

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Abstract

The invention discloses a preparation method for a solar cell spectrum conversion polymeric membrane. The invention is characterized in that raw materials used in the method comprise, by weight, 100 to 150 parts of a polymer membrane, 0.01 to 1 part of a light stabilizing agent, 0.01 to 1 part of an ultraviolet absorber, 1 to 20 parts of a spectrum conversion material and 0.01 to 1 part of an initiator and the preparation method comprises the following steps: (1) reacting a rare earth chloride with silsesquioxane to prepare the spectrum conversion material; (2) processing the polymer membrane with a plasma processor; and (3) grafting the spectrum conversion material prepared in step (1) with the polymer membrane processed in step (2) so as to obtain the solar cell spectrum conversion polymeric membrane. The invention has the following advantages: the preparation process of the preparation method for the solar cell spectrum conversion polymeric membrane is simple; the prepared polymeric membrane has high light transmittance and good weatherability; and a solar cell prepared with the polymeric membrane as an assembly has high photoelectric conversion efficiency and a long service life.

Description

technical field [0001] The invention relates to a preparation method of a solar cell spectrum conversion encapsulation adhesive film, in particular to a preparation method of a solar cell spectrum conversion polymer film. Background technique [0002] A solar cell is a device that converts light energy into electrical energy, and its main components are tempered glass, packaging film, and solar cells. The spectral composition of sunlight covers the band from ultraviolet to far infrared, and as the wavelength increases, the photon energy of sunlight decreases. When sunlight hits the surface of the solar cell, it is separated into three parts: one part is reflected by the solar cell, one part is absorbed by the solar cell, and the other part directly passes through the solar cell. Due to the nature of the solar cell material, both the high-energy photon part (ultraviolet band) and the low-energy photon part (far-infrared band) of sunlight cannot be absorbed by the solar cell ...

Claims

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Application Information

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IPC IPC(8): C08J7/12C08J7/00H01L31/048H01L31/055
CPCY02E10/50Y02E10/52
Inventor 李鹏侯琳熙张祥洲张小梅
Owner NINGBO UNIV
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