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Luminescent ethylene-based copolymer, sealing material composition for solar cell, and solar cell module obtained using same

A technology of solar cells and packaging material layers, applied in luminescent materials, photovoltaic power generation, electrolytic capacitors, etc., can solve the problems of decomposition, labor cleaning, resin temperature rise, etc., and achieves high processability, easy handling, and excellent processability. Effect

Inactive Publication Date: 2017-04-26
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In such a case, the temperature of the resin rises during kneading, which may cause the following disadvantages: the crosslinking agent (organic peroxide) that starts to react by heating is decomposed during kneading; etc.
In addition, in the kneading device, the added phosphor may adhere to the inside of the device, requiring labor to clean it.

Method used

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  • Luminescent ethylene-based copolymer, sealing material composition for solar cell, and solar cell module obtained using same
  • Luminescent ethylene-based copolymer, sealing material composition for solar cell, and solar cell module obtained using same
  • Luminescent ethylene-based copolymer, sealing material composition for solar cell, and solar cell module obtained using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0144] In an autoclave (capacity 1L) with an electromagnetic up-and-down stirrer, add 10 parts by weight of vinyl acetate, 100 parts by weight of tert-butanol, 0.2 parts by weight of AIBN, and 2 parts by weight of a fluorescent pigment compound (compound (1)). Nitrogen gas was blown into the above mixed solution for about 5 minutes to remove dissolved air, and the lid of the autoclave was closed. And then, in the autoclave, blow into nitrogen, with about 30kg / cm 2 The pressure was replaced 5 times. The same operation was carried out with ethylene gas. Then, start heating while operating the mixer, and when the internal temperature reaches 65° C., pressurize ethylene gas from a high-pressure gas cylinder to feed so that the ethylene pressure becomes 70 kg / cm 2 . Then, stirring was carried out at a reaction temperature of 65°C for 6 hours, and then the autoclave was cooled to room temperature to terminate the reaction and release unreacted ethylene. For the obtained reactan...

Embodiment 2～12

[0149]In the same manner as in Example 1, each solar cell encapsulating sheet using compounds (2) to (12) instead of compound (1) was produced.

[0150] [chemical formula 2]

[0151]

[0152] [chemical formula 3]

[0153]

[0154] [chemical formula 4]

[0155]

[0156] [chemical formula 5]

[0157]

[0158] [chemical formula 6]

[0159]

Embodiment 13

[0165] In an autoclave (capacity 1L) with an electromagnetic up-and-down stirrer, add 10 parts by weight of vinyl acetate, 100 parts by weight of tert-butanol, 0.2 parts by weight of AIBN, and 20 parts by weight of a fluorescent pigment compound (compound (1)). Nitrogen gas was blown into the above mixed solution for about 5 minutes to remove dissolved air, and the lid of the autoclave was closed. And then, in the autoclave, blow into nitrogen, with about 30kg / cm 2 The pressure was replaced 5 times. The same operation was carried out with ethylene gas. Then, start heating while operating the mixer, and when the internal temperature reaches 65° C., pressurize ethylene gas from a high-pressure gas cylinder to feed so that the ethylene pressure becomes 70 kg / cm 2 . Then, stirring was carried out at a reaction temperature of 65°C for 6 hours, and then the autoclave was cooled to room temperature to terminate the reaction and release unreacted ethylene. For the obtained reacta...

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Abstract

The purpose of the present invention is to provide: a luminescent ethylene-based copolymer which is free from problems of the migration or bleeding of fluorescent substances, has high processability, desirable optical properties, and satisfactory light stability, and is easy to handle in a kneading step; and a sealing material composition for solar cells which includes the ethylene-based copolymer. The invention further provides: a sealing material layer for solar cells which was formed from the sealing material composition for solar cells and which is free from problems of the migration or bleeding of fluorescent substances and has desirable optical properties and satisfactory light stability; and a photovoltaic module including the sealing material layer. The luminescent ethylene-based copolymer contains, as a monomer component, a florescent colorant compound having an unsaturated bond.

Description

technical field [0001] The present invention relates to a light-emitting ethylene-based copolymer particularly suitable for use in solar cells, which has a suitable absorption wavelength when used as a solar cell encapsulation material, a fluorescent film forming material, and the like, and has excellent photostability, and a method for producing the same , a wavelength conversion type encapsulant composition for solar cells using the same, a wavelength conversion type encapsulant layer for solar cells (wavelength conversion film, wavelength conversion sheet, etc.), and a solar cell module. The encapsulant layer described above has the potential to significantly increase the sunlight harvesting efficiency of photovoltaic or solar cell devices. Background technique [0002] Through the utilization of solar energy, it is possible to provide an energy source that is expected to replace conventional fossil fuels. Therefore, the development of devices that can convert solar energ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F210/02C08L23/08C09B69/10C09K11/06H01G9/20H01L31/048H01L31/055
CPCC09K11/06H01L31/055Y02E10/52H01G9/2077C08F210/02C09B69/109H01L31/0481Y02E10/547H10K30/88C08F218/08H01L31/028
Inventor 尾之内久成中西贞裕川满升一
Owner NITTO DENKO CORP