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Preparation method of double-layer antireflection coating of crystalline silicon solar battery

A technology of solar cells and anti-reflection coatings, applied in the field of solar cells, can solve problems such as low reflectivity and reduced reflectivity, and achieve the effects of high power, improved photoelectric conversion efficiency, and improved absorption

Inactive Publication Date: 2009-12-23
上海泰阳绿色能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the reflectivity of silicon solar cells with silicon nitride anti-reflection film is not very low, how to further reduce the reflectivity has become a big problem

Method used

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  • Preparation method of double-layer antireflection coating of crystalline silicon solar battery

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Experimental program
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Embodiment 2

[0026] A method for preparing a double-layer anti-reflection film for a crystalline silicon solar cell, the specific steps are:

[0027] Step 1: Measure tetraethyl orthosilicate, absolute ethanol, deionized water, 36.5wt% hydrochloric acid and organic additives with a molar ratio of 1:50:10:1:0.2, and add hydrochloric acid to the Dilute in ionized water, mix tetraethyl orthosilicate and absolute ethanol, stir and heat to 100°C, add the diluted hydrochloric acid solution to the above solution in 10 times, wait for the temperature to stabilize, continue to stir for 180 minutes, cool, add organic additives Compound silane coupling agent KH-560, stir to dissolve, seal and age to obtain a sol;

[0028] Step 2: Measure tetraethyl orthosilicate, absolute ethanol, deionized water, ammonia water and organic additives with a molar ratio of 1:50:10:1:0.2, add ammonia water to deionized water and dilute Mix tetraethyl orthosilicate and absolute ethanol, stir and heat to 100°C, add the diluted...

Embodiment 3

[0033] A method for preparing a double-layer anti-reflection film for a crystalline silicon solar cell, which is characterized in that the specific steps are:

[0034] Step 1: Measure tetraethyl orthosilicate, absolute ethanol, deionized water, 36.5wt% hydrochloric acid and organic additives with a molar ratio of 1:50:10:1:0.2, and add hydrochloric acid to the Dilute in ionized water, mix tetraethyl orthosilicate and absolute ethanol, stir and heat to 100℃, add the diluted hydrochloric acid solution to the above solution in 10 times, wait for the temperature to stabilize, continue to stir for 180 minutes, cool, add organic additives Cetyltrimethylammonium bromide, N,N-dimethylformamide, and polyethylene glycol with a molar ratio of 1:1:1 are stirred to dissolve, sealed and aged to obtain a sol;

[0035] Step 2: Measure tetraethyl orthosilicate, absolute ethanol, deionized water, ammonia and organic additives in a molar ratio of 1:50:10:1:0.2, add ammonia to deionized water and dil...

Embodiment 4

[0040] A method for manufacturing a double-layer anti-reflection film for a crystalline silicon solar cell, which is characterized in that the specific steps are:

[0041] Step 1: Measure tetraethyl orthosilicate, ethanol, deionized water, 36.5wt% hydrochloric acid and organic additives in a molar ratio of 0.1:20:0.2:0.01:0.006, and add hydrochloric acid to the deionized water Dilute, mix tetraethyl orthosilicate and absolute ethanol, stir and heat to 50°C, add the diluted hydrochloric acid solution to the above solution in 10 steps, wait for the temperature to stabilize, continue to stir for 60 minutes, cool to 20°C, add moles The organic additive silane coupling agent KH-560 and cetyltrimethylammonium bromide (CTAB) with a ratio of 1:5 were stirred to dissolve, sealed and aged for 1 day to obtain a sol;

[0042] The second step: Measure tetraethyl orthosilicate, ethanol, deionized water, ammonia water and organic additives in a molar ratio of 0.1:20:0.2:0.01:0.006, add the ammon...

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Abstract

The invention relates to a preparation method of a double-layer antireflection coating of a crystalline silicon solar battery, comprising following concrete steps: firstly, mixing tetraethyl orthosilicate and ethanol, stirring and heating; adding attenuant hydrochloric acid solution into the mixed solution; after cooling, adding organic superaddition into the solution, stirring and dissolving, sealing and maturing to obtain acid catalysis colloidal sol; mixing tetraethyl orthosilicate and ethanol, stirring and heating, adding aattenuant aqua ammonia into the mixed solution; after cooling, adding organic superaddition into the solution, stirring and dissolving, sealing and maturing to obtain base catalysis colloidal sol; mixing the prepared acid catalysis SiO2 colloidal sol and the base catalysis SiO2 colloidal sol, evenly stirring the solution, sealing, standing and maturing for one day to obtain new colloidal sol; preparing a crystalline silicon solar battery substrate, forming a silicon nitride film, spraying the prepared colloidal sol on the silicon nitride film to prepare a silicon dioxide film, hot processing the obtained silicon dioxide film, printing the front back electrodes and back surface fields, drying and sintering.

Description

Technical field [0001] The invention belongs to the technical field of solar cells, and particularly relates to a method for manufacturing a double-layer anti-reflection film of a crystalline silicon solar cell. Background technique [0002] Crystalline silicon solar cells are optoelectronic devices that convert light energy into electrical energy. Its photoelectric conversion efficiency is defined as the ratio of the total output power to the total power of sunlight incident on the surface of the solar cell. [0003] In order to improve the photoelectric conversion efficiency of crystalline silicon solar cells, the reflection loss of light on the surface of the cell should be reduced, and the light transmission should be increased. At present, two methods are mainly used: (1) Corroding the surface of the battery into a suede, increasing the number of incidents of light on the surface of the battery; (2) Plating one or more layers of anti-reflection coatings with matching optical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/18
CPCY02P70/50
Inventor 郭明星熊胜虎盛鹏孔慧
Owner 上海泰阳绿色能源有限公司
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