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Self-cleaning solar cell anti-reflective coating

A technology of solar cells and anti-reflection coatings, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as difficult cleaning and efficiency loss, and achieve the effects of saving costs, improving light conversion rate, and widely promoting application value

Active Publication Date: 2014-07-23
浙江冠旗纳米科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Transparent tempered glass usually has a light transmittance of only about 90% at most, which virtually affects the power generation capacity of the solar panel. Therefore, it is necessary to install an anti-reflection film on the transparent tempered glass, and because the anti-reflection film on the tempered glass is exposed, the anti-reflection After the film is exposed to the sun and rain, it is easy to cause efficiency loss. When rain and dirt adhere to the surface of the tempered glass, it is not easy to clean. In addition, most of the existing anti-reflection films are in the visible light sensitive area, that is, the area around 550nm wavelength For the AR target area, not very suitable for working with solar panels

Method used

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Embodiment 1

[0011] A self-cleaning solar cell anti-reflection film, with transparent materials as the base material, the base material can be selected from transparent tempered glass, PC, PS, PMMA; in this embodiment, the base material is selected from transparent tempered glass, generally speaking, the solar cell is There is no response to ultraviolet rays with a wavelength of less than 350nm and infrared rays with a wavelength greater than 1150nm, and the peak value of the response appears at 800nm~900nm. From one side to the outside, it gradually becomes a silicon dioxide film layer, a titanium dioxide film layer, and a silicon dioxide film layer;

[0012] With the wavelength of 800nm ​​as the reference wavelength, the layer of silicon dioxide film close to the transparent tempered glass is used by the sol-gel method, the optical thickness is a quarter of the reference wavelength, and the thickness of the film layer is 137nm; although the sol-gel method is The surface of the silicon di...

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Abstract

The invention relates to the field of anti-reflective coatings, in particular to a solar cell anti-reflective coating. The self-cleaning solar cell anti-reflective coating is characterized in that transparent tempered glass serves as base materials, the anti-reflective coating comprises three coating bodies, namely the silicon dioxide coating body, the titanium dioxide coating body and the silicon dioxide coating body, the silicon dioxide coating body, the titanium dioxide coating body and the silicon dioxide coating body are sequentially arranged from the side close to the transparent tempered glass to the outside, the reference wavelength is the 800-nm wavelength, a sol-gel method is adopted for the silicon dioxide coating body close to the transparent tempered glass, the optical thickness of the silicon dioxide coating body is one fourth of the reference wavelength, magnetron sputtering coating is adopted for the titanium dioxide coating body, the optical thickness of the titanium dioxide coating body is a half of the reference wavelength, magnetron sputtering coating is adopted for the silicon dioxide coating body on the outer side, and the optical thickness of the silicon dioxide coating body is one fourth of the reference wavelength. According to the self-cleaning solar cell anti-reflective coating, the photocatalysis self-cleaning function of titanium dioxide and the hydrophobicity of nanoscale silicon dioxide are sufficiently used, the light conversion rate can be increased by 1%, the durability of the glass of the anti-reflective coating can be further improved, a solar cell panel can be easily applied outdoors for a long time, and the cost of solar power generation is greatly saved.

Description

technical field [0001] The invention relates to the field of anti-reflection films, in particular to an anti-reflection film for solar cells. Background technique [0002] Solar energy, as a clean and renewable new energy source, has attracted more and more attention from various countries. In order to improve the light wave absorption capacity in the range of 350-1000nm response range, solar panels are usually installed on the light-receiving surface of crystalline silicon wafers to cover Multi-layer anti-reflection film, in addition to protecting the fragile solar panel, a layer of transparent tempered glass is pasted on the solar panel with EVA film. [0003] Transparent tempered glass usually has a light transmittance of only about 90% at most, which virtually affects the power generation capacity of the solar panel. Therefore, it is necessary to install an anti-reflection film on the transparent tempered glass, and because the anti-reflection film on the tempered gl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/0216H01L31/18
CPCH01L31/02168H02S40/00Y02E10/50Y02P70/50
Inventor 林峰
Owner 浙江冠旗纳米科技有限公司
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