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Preparation method of EVA/lead sulfide quantum dot composite packaging adhesive film material with light converting function

A technology for encapsulating film and quantum dots, which is applied in the field of photofunctional materials for solar cells, can solve the problems of short lifespan of rare earth organic complexes, and achieve excellent light conversion and long lifespan

Active Publication Date: 2015-09-23
无锡市钱氏功能塑胶有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in order to make better use of solar energy to improve battery efficiency, some research work (such as: Chinese patent CN104152065A; CN103709946A; CN103254495A, etc.) has been done by compounding rare earth organic complexes with light-transferring functions and EVA to improve battery efficiency, and it has also been obtained The EVA packaging film with light conversion function has been developed, but its application is limited due to the short life of rare earth organic complexes.

Method used

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  • Preparation method of EVA/lead sulfide quantum dot composite packaging adhesive film material with light converting function
  • Preparation method of EVA/lead sulfide quantum dot composite packaging adhesive film material with light converting function
  • Preparation method of EVA/lead sulfide quantum dot composite packaging adhesive film material with light converting function

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Experimental program
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Effect test

Embodiment 1

[0029] In parts by weight, 5 parts of lead sulfide quantum dots and 0.05 part of silane coupling agent were added to 100 parts of acetone, and ultrasonicated for 10 minutes, as the lead sulfide quantum dot suspension A for later use.

[0030] 100 parts of EVA (VA content of 24%wt), 0.2 parts of dioxane peroxide, 0.3 parts of 2,4-dihydroxybenzophenone, 1 part of N, N'-bis[3-(3,5-bis tert-butyl-4-hydroxyphenyl)propionyl]hydrazine, 2 parts of dilauryl thiodipropionate, 0.1 part of white wax oil and 20 parts of the above suspension A, put into a high-speed mixer and mix evenly, and then mix at 80°C Mix evenly in an open mill to obtain an EVA / lead sulfide quantum dot composite packaging film material with light conversion function, the light transmittance in the visible light range is ≥ 70%, and the light conversion range is 400-600nm.

Embodiment 2

[0032]In 100 parts of tetrahydrofuran, add 20 parts of lead sulfide quantum dots, 2 parts of titanate coupling agent, ultrasonic for 120 minutes, as lead sulfide quantum dot suspension A for later use.

[0033] 100 parts of EVA (VA content is 28%wt), 0.5 parts of benzoyl peroxide, 2 parts of isooctyl peroxide tert-butyl ester, 0.3 parts of bis(2,2,6,6-tetramethyl-4- Piperidyl) sebacate, 2.5 parts of 2-phenylbenzimidazole-5-sulfonic acid, 1 part of pentaerythritol bisphosphite (2,4-di-tert-butylphenyl) ester, 0.5 parts of 2,2 '-Methylenebis(4-methyl-6-tert-butylphenol), 10 parts of citric acid ester and 10 parts of the above suspension A, put into a high-speed mixer and mix evenly, and then mix evenly in a 100°C internal mixer , that is, an EVA / lead sulfide quantum dot composite packaging film material with the function of light conversion is obtained, and the light transmittance in the visible light range is ≥73%; figure 1 It is the emission spectrum of the EVA / lead sulfide q...

Embodiment 3

[0035] In 100 parts of cyclohexane, add 10 parts of lead sulfide quantum dots, 0.5 parts of aluminate coupling agent, ultrasonic for 180 minutes, and use it as lead sulfide quantum dot suspension A for later use.

[0036] 100 parts of EVA (VA content is 40%), 5 parts of dicumyl peroxide, 5 parts of 2-(2'-hydroxy-3', 5'-dipentylphenyl) benzotriazole, 0.1 parts Put 2,6-di-tert-butyl-4-methylphenol, 15 parts of stearic acid and 1 part of the above suspension A into a high-speed mixer and mix them uniformly, and then mix them uniformly in an extruder at 130°C to obtain a EVA / lead sulfide quantum dot composite packaging film material with light conversion function, the light conversion range is 400-600nm; figure 2 It is the ultraviolet-visible spectrogram of the EVA / lead sulfide quantum dot composite encapsulation adhesive film material with the light conversion function of embodiment 3, by figure 2 It can be seen that the light transmittance of the packaging film in visible lig...

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Abstract

The invention discloses a preparation method of an EVA / lead sulfide quantum dot composite packaging adhesive film material with a light converting function. The material is formed by compounding lead sulfide quantum dots and an EVA packaging adhesive film, wherein the lead sulfide quantum dots are lead sulfide nano-particles of which the sizes are 1 to 20 nm. The preparation method comprises the following steps: conducting surface treatment on the lead sulfide quantum dots under an ultrasonic condition; carrying out melt compounding between the treated lead sulfide quantum dots, and EVA, a cross-linking agent, an ultraviolet stabilizer, an anti-oxygen, a plasticizer and the like to prepare the EVA / lead sulfide quantum dot composite packaging adhesive film material with the light converting function. The material prepared according to the method can absorb ultraviolet light and emit visible light, so as to improve the ultraviolet light utilization ratio of a solar cell module, and further improve efficiency; moreover, the material prepared according to the method is longer in service life than a rare earth light converting material.

Description

technical field [0001] The invention belongs to the field of photofunctional materials for solar cells, and in particular relates to a preparation method of an EVA / lead sulfide quantum dot compound light-converting packaging adhesive film material. Background technique [0002] Solar energy is an inexhaustible green renewable energy that does not pollute the environment. Therefore, it is gradually favored by people under the circumstances that mineral energy is depleted and environmental pollution is becoming more and more serious. The utilization of solar energy mainly includes photothermal, photochemical conversion and photovoltaic power generation utilization. Among them, photovoltaic power generation converts light energy into electrical energy through photoelectric conversion, which facilitates energy transmission, and has the irreplaceable advantages of the other two methods in terms of storage and versatility. With the development of photovoltaic power generation tec...

Claims

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Application Information

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IPC IPC(8): C09J7/00C09J123/08C09J11/06C09J11/04H01L31/048
CPCY02E10/50
Inventor 钱镭戚嵘嵘李海波吴佳玮钱维均
Owner 无锡市钱氏功能塑胶有限公司
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