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Method for preparing self-cleaning protective film of solar cell

A solar cell and self-cleaning technology, which is applied in the field of preparation of solar cell self-cleaning protective film, can solve problems such as solar cells are easily broken and easily corroded, achieve low cost, increase transmittance, and reduce transmittance decline Effect

Inactive Publication Date: 2010-11-24
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The solar cell itself is fragile and easily corroded. If it is directly exposed to the atmosphere, it will degrade due to the influence of humidity, dust, acid rain, etc.

Method used

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  • Method for preparing self-cleaning protective film of solar cell
  • Method for preparing self-cleaning protective film of solar cell

Examples

Experimental program
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Embodiment 1

[0029] Using 12ml of ethyl orthosilicate, 40ml of ethanol and 6ml of water as raw materials, hydrochloric acid as a catalyst (3~5 drops to make the solution PH=3), carry out hydrolysis and polycondensation reaction at 70~75℃, add 0.25% in the process (mol %) EuCl 3 ·6H 2 Doping with O, adjust the pH to 3 after the solution is cooled, fully stir for 1 hour, and stand for 2-12 hours to prepare for coating.

[0030] Rinse the substrate glass with detergent and deionized water several times, then put it in absolute ethanol and clean it with an ultrasonic cleaner for 15 minutes, and finally wipe the surface droplets with lens paper, and place it in an electric blower at 50℃ Dry for later use.

[0031] Use a homogenizer to coat the substrate at room temperature, and set the first-stage rotation speed to 500 rpm and the time to 9s; the second stage rotation speed to 3950 rpm and the time to 30s. The coated glass is first dried in a drying oven at 50°C for half an hour, and then the sampl...

Embodiment 2

[0038] Using 12ml of ethyl orthosilicate, 40ml of ethanol and 6ml of water as raw materials, hydrochloric acid as a catalyst (3~5 drops to make the solution PH=3), carry out the hydrolysis and polycondensation reaction at 70~75℃, and add 0.5% in the process (mol %) EuCl 3 ·6H 2 Doping with O, adjust the pH to 3 after the solution is cooled, fully stir for 1 hour, and stand for 2-12 hours to prepare for coating.

[0039] Rinse the substrate glass with detergent and deionized water several times, then put it in absolute ethanol and clean it with an ultrasonic cleaner for 15 minutes, and finally wipe the surface droplets with lens paper, and place it in an electric blower at 50℃ Dry for later use.

[0040] Use a homogenizer to coat the substrate at room temperature, and set the first-stage rotation speed to 500 rpm and the time to 9s; the second stage rotation speed to 3950 rpm and the time to 30s. The coated glass is first dried in a drying oven at 50°C for half an hour, and then th...

Embodiment 3

[0047] Using 12ml of ethyl orthosilicate, 40ml of ethanol and 6ml of water as raw materials, hydrochloric acid as a catalyst (3~5 drops to make the solution PH=3), carry out the hydrolysis and polycondensation reaction at 70~75℃, and add 0.75% during this process (mol %) EuCl 3 ·6H 2 Doping with O, adjust the pH to 3 after the solution is cooled, fully stir for 1 hour, and stand for 2-12 hours to prepare for coating.

[0048] Rinse the substrate glass with detergent and deionized water several times, then put it in absolute ethanol and clean it with an ultrasonic cleaner for 15 minutes, and finally wipe the surface droplets with lens paper, and place it in an electric blower at 50℃ Dry for later use.

[0049] Use a homogenizer to coat the substrate at room temperature, and set the first-stage rotation speed to 500 rpm and the time to 9s; the second stage rotation speed to 3950 rpm and the time to 30s. The coated glass is first dried in a drying oven at 50°C for half an hour, and t...

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Abstract

The invention relates to a method for preparing a self-cleaning protective film of a solar cell, which comprises the following steps of: (1) performing hydrolytic polycondensation on tetraethoxysilane, deionized water and ethanol serving as raw materials in a volume ratio of 8-12:4-6:40-50 in the presence of hydrochloric acid serving as a catalyst at the temperature of between 68 and 75 DEG C, and adding EuCl3.6H2O in the reaction process for doping; (2) washing a glass substrate for multiple times with a detergent and the deionized water, putting the glass substrate into absolute ethyl alcohol to perform ultrasonic cleaning for 15 minutes, and drying the cleaned glass substrate at the temperature of 50 DEG C for later use; and (3) coating a film on the substrate at room temperature with a spin coater to obtain the required protective film. The method has a simple process; and the prepared film has super-hydrophilic property, and can effectively improve the transmittance and surface hardness of cover glass within the visible light range, have self-cleaning and physical protection functions on the solar cell, and prolong the service life of the solar cell.

Description

Technical field [0001] The invention belongs to the preparation field of surface treatment of solar cell cover plates, and particularly relates to a preparation method of a solar cell self-cleaning protective film. Background technique [0002] Solar energy is a clean new energy with great potential. Compared with coal, petroleum and nuclear energy, it has unique advantages: First, it does not use fossil fuels or nuclear fuels to generate hazardous waste and gas, and does not pollute the environment; second, it has no geographical and Resources are limited, where sunlight can be used everywhere, it is convenient and safe to use; third, there is no limit to energy, which is renewable energy. Therefore, the research and application of solar energy is one of the main directions of human energy development in the future. [0003] In the process of developing and using solar energy, people have developed solar cells to convert solar energy into electricity or other energy. The materia...

Claims

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Application Information

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IPC IPC(8): C03C17/22
Inventor 李茜琪王海风姚雪亮
Owner DONGHUA UNIV
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