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Material used for solar cell rear panels and preparation method of material

A technology for solar cells and back sheets, applied in the field of solar cells, can solve the problems of the complexity of the production process, the reduction of efficiency, the increase of production costs, etc., and achieve the effects of excellent water vapor barrier properties, avoiding the use of adhesives, and good performance.

Active Publication Date: 2013-09-18
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Adhesives are usually used between the multilayer structures of solar cell backsheets currently used. The use of adhesives will bring environmental problems during the production and use of solar cells. At the same time, the structure of multilayer boards also brings The complexity of the production process and the rise of production costs and the reduction of efficiency

Method used

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  • Material used for solar cell rear panels and preparation method of material

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Embodiment 1

[0020] Add 3-fluoro-1,2-propanediol and 1,4-butanediol with a molar ratio of 1:1 into the reactor with a reflux and stirring device, and then add 2,6-naphthalene dicarboxylic acid with a molar ratio of 0.9:1 and isophthalic acid were added, wherein the ratio of the total moles of diols to the total moles of dibasic acids was controlled at 1.40:1, and the stirrer was started at 60 revolutions per minute; the mixture was heated to 210°C , add 100ppm of tetrabutyl titanate and 20ppm of sodium tungstate relative to the total mass of alcohol and acid, and react for 4 hours under stirring, then add europium carbonate hydrate and graphene oxide with a mass ratio of 0.4:1, and the addition amount is 9% of the total mass of alcohol and acid; increase the stirring speed to 210 rpm, and stir for 30 minutes; then use a vacuum pump to extract the air in the reactor, and use 1.5 hours to make the vacuum of the system greater than 100Pa, and then react at 210°C for 3 hour, promptly obtain th...

Embodiment 2

[0022] Add 3-fluoro-1,2-propanediol and 1,4-butanediol with a molar ratio of 2:1 into the reactor with a reflux and stirring device, and then add 2,6-naphthalene dicarboxylic acid with a molar ratio of 0.4:1 and isophthalic acid are added therein, wherein the ratio of the total moles of dibasic alcohols to the total moles of dibasic acids is controlled at 1.2:1, and the stirrer is started at a speed of 60 revolutions per minute; the mixture is heated to 220°C , add 200ppm of zinc acetate and 30ppm of sodium tungstate relative to the total mass of alcohol and acid, and react for 4 hours under stirring, then add hydrated europium carbonate and graphene oxide with a mass ratio of 0.48:1. 7% of the mass; increase the stirring speed to 210 rpm, and stir for 30 minutes; then use a vacuum pump to extract the air in the reactor, use 2 hours to make the vacuum of the system greater than 100Pa, and then react at 240 ° C for 4 hours to obtain Materials described in the present invention....

Embodiment 3

[0024] Add 3-fluoro-1,2-propanediol and 1,4-butanediol in a molar ratio of 3:1 into a reaction kettle with a reflux and stirring device, and then add 2,6-naphthalene dicarboxylic acid in a molar ratio of 1:1 and isophthalic acid are added therein, wherein the ratio of the total moles of dibasic alcohols to the total moles of dibasic acids is controlled at 1.4:1, and the stirrer is started at a speed of 80 revolutions per minute; the mixture is heated to 210°C , add 200ppm of zinc acetate and 30ppm of sodium tungstate relative to the total mass of alcohol and acid, and react for 4 hours under stirring, then add hydrated europium carbonate and graphene oxide with a mass ratio of 0.6:1. 19% of the mass; increase the stirring speed to 220 rpm, and stir for 30 minutes; then use a vacuum pump to extract the air in the reactor, use 2 hours to make the vacuum of the system greater than 100Pa, and then react at 240 ° C for 5 hours to obtain Materials described in the present invention....

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Abstract

The invention provides a hybrid polymer material used for solar cell rear panels and a preparation method of the material. Single-layer solar cell rear panels can be produced by utilizing the material, the hybrid polymer material is composed of a polymer obtained by copolymerizing functional powder (i) composed of europium carbonate and graphene oxide at a specific mass ratio of 0.3-0.65:1 and several monomers including 1,4-cyclohexane dicarboxylic acid, 2,6-naphthalic acid, 3-fluorine-1,2-propylene glycol and 1,4 butanediol, and the functional powder is added in the process of polymer synthesis. By utilizing the material to manufacture the single-layer solar cell rear panels, process complexity in production of the solar cell rear panels is lowered, adhesive consumption is avoided, and excellent blocking resistance and mechanical performance are provided.

Description

technical field [0001] The invention relates to the field of solar cells, in particular to a solar cell back sheet, and more specifically to a material for producing a solar cell back sheet. technical background [0002] Solar energy is a renewable energy and the most abundant energy available to human beings. With the gradual scarcity of non-renewable energy and various pollution problems caused by the production and use of mineral resources, solar energy, as a recyclable clean energy, has achieved unprecedented rapid development in various countries. Solar power generation, also known as photovoltaic power generation, usually uses the photovoltaic effect of semiconductor devices for photoelectric conversion. The required solar cells (also known as photovoltaic cells) are usually composed of glass, EVA, silicon wafer cells, and backplanes. The backplane is located on the outermost layer on the back of the photovoltaic cell and is an important part of the photovoltaic cell....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/048H01L31/18
CPCY02E10/50Y02P70/50
Inventor 徐勇
Owner NANJING UNIV OF SCI & TECH
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