Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Solar cell EVA packaging adhesive film material having light conversion function, and preparation method thereof

A solar cell and encapsulation adhesive film technology, which is applied in photovoltaic power generation, circuits, adhesives, etc., can solve the problems of increasing powder, unused, etc., and achieve the effect of improving efficiency

Inactive Publication Date: 2014-04-09
NANJING UNIV OF TECH
View PDF5 Cites 32 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In October 2012, four companies applied for related patents on the EVA film with light conversion function, such as Chinese patents: 201210341265.9, 201210450694.X, 201210546044.5, 201210234834.X. These patents do not use the microwave ultrasonic method of the present invention to Synthesize small-sized and uniform rare earth organic complexes with dual photoconversion functions (UV down-conversion and near-infrared up-conversion), and none of them use the solution method to dissolve and compound to increase the dispersion uniformity of the powder in the EVA film

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Solar cell EVA packaging adhesive film material having light conversion function, and preparation method thereof
  • Solar cell EVA packaging adhesive film material having light conversion function, and preparation method thereof
  • Solar cell EVA packaging adhesive film material having light conversion function, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Preparation of Sm by Microwave Ultrasonic Method 0.5 Yb 0.5 (TTA) 3 Phen (MU-5-150) light-converting nanomaterials, weighing 3mmol samarium chloride (SmCl 3 ·6H 2 O)+3mmol ytterbium chloride (YbCl 3 ·6H2 (0) 40ml ethanol solution, 6mmol1,10-phenanthroline (Phen) 30ml ethanol solution, the ethanol solution of 18mmol α-thienoyl trifluoroacetone (HTTA) 70ml, in a microwave ultrasonic combined reactor (microwave power 500W, ultrasonic power 500W, reaction temperature 60°C, reaction time 60min) into a four-port flat-bottomed glass reaction vessel, first add HTTA solution, and then use a peristaltic pump to sequentially add SmCl 3 ·6H 2 O+YbCl 3 ·6H 2 For O solution and Phen solution, use 1mol / L NaOH to adjust the pH value between 5-6; after the reaction, filter water and alcohol, wash each for several times, dry in vacuum at 60°C, and store in a desiccator. SEM taken with a JSM-5900 scanning electron microscope such as figure 1 As shown, oblong particles with submic...

Embodiment 2

[0031] Preparation of Sm by Microwave Ultrasonic Method 0.5 Yb 0.5 (TTA) 3 Phen (MU-OA-150) light-converting nanomaterials, weighing 6mmol samarium chloride (SmCl 3 ·6H 2 O)+3mmol ytterbium chloride (YbCl 3 ·6H 2 O) 40ml ethanol solution, 6mmol1,10-phenanthroline (Phen) 30ml ethanol solution, 18mmol α-thienoyl trifluoroacetone (HTTA) 70ml ethanol solution, 6mmol oleic acid (OA) 35ml ethanol solution, in microwave ultrasonic First add HTTA solution into the four-port flat-bottomed glass reaction vessel of the combined reactor (microwave power 500W, ultrasonic power 800W, reaction temperature 60°C, reaction time 60min), and then use a peristaltic pump to sequentially add SmCl 3 ·6H 2 O+YbCl 3 ·6H 2 O solution, Phen solution, and finally OA solution were introduced, and 1mol / L NaOH was used to adjust the pH value between 5-6; after the reaction was completed, the water and alcohol were filtered and washed several times, dried in vacuum at 60°C, and stored in a desiccator....

Embodiment 3

[0033] Up and down bidirectional light conversion complex powder Sm 0.5 Yb 0.5 (TTA) 3 Compounding of Phen with EVA granules (EST-0.2), using Sm with up and down bidirectional light conversion complexes 0.5 Yb 0.5 (TTA) 3 Compound 0.02g of Phen powder with 10g of EVA: use 200mlTHF to completely dissolve 10g of EVA particles at room temperature (25°C) in advance, and then add Sm, which is fully ultrasonically dispersed with isopropanol 500W / 30min 0.5 Yb 0.5 (TTA) 3 Phen powder particles and 0.1g cross-linking agent BPO are stirred with a magnetic stirrer at 2400r / min, and dried at 40°C for 2 hours to form a film; then use a flat vulcanizer to press the film: temperature 145°C, pressure 10MPa, holding time 10min.

[0034] The contrast curve of transmittance between EVA film material with up and down two-way light conversion function and EVA pure sample is as follows: Figure 5 As shown, the up and down bidirectional light conversion organic powder Sm 0.5 Yb 0.5 (TTA) ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a solar cell EVA packaging adhesive film material having a light conversion function. The material is obtained by compounding a rare earth organic complex with an EVA packaging adhesive; the rare earth organic complex is a nano-micro-scale rare earth organic complex having ultraviolet down-conversion and near infrared up-conversion functions; and the EVA packaging adhesive is an ethylene-vinyl acetate copolymer, wherein the content of vinyl acetate (VA) in the EVA packaging adhesive is 25-42%, and the melt index of the EVA packaging adhesive is 10-45g / 10min. The invention also discloses a preparation method of the material. The method comprises the following steps: dissolving the EVA in THF according to a certain ratio at room temperature to form a THF solution of the EVA, setting an ultrasonic dispersion power, and dispersing the rare earth organic complex in a solvent to form a complete clear solution; adding the formed THF solution into the formed clear solution, adding a cross-linking agent benzoyl peroxide, reacting for 1-6h, drying to form a film, and squeezing the film by using a flat vulcanizing machine to obtain the transparent light-conversion adhesive film material having a transmissivity of 90% or more, wherein the thickness of an EVA packaging adhesive film is 0.1-5.0mm.

Description

technical field [0001] The invention relates to the field of photofunctional materials, in particular to a solar cell EVA packaging adhesive film material with photoconversion function and a preparation method thereof. Background technique [0002] Sunlight is the source of power for the survival and development of humans, animals and plants. Nowadays, the loss and pollution of a large number of non-renewable energy sources make humans have to focus on the development and utilization of new natural and pollution-free energy sources: solar energy. But so far, what humans can use in large quantities is only limited to the energy of some visible light, and most of the infrared light and high-energy ultraviolet light are wasted and lost by human beings and have not been fully utilized by humans. In recent years, most of the utilization of solar energy is to convert light energy into electrical energy through solar panels, which is then used for human survival. At present, ethyl...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C09J7/00C09J123/08C09J11/06H01L31/048
CPCY02E10/50
Inventor 倪亚茹陶静陈杰陆春华许仲梓
Owner NANJING UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com