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Method for producing solar cell with flexible transfer underlay by using suede temporary underlay

A technology for transferring substrates and solar cells, applied in circuits, electrical components, climate sustainability, etc., can solve the problems of deterioration of battery performance, inability to completely cover the surface of metal foil, and difficulty in densifying the film, so as to improve short-circuit current and Open circuit voltage, improve photoelectric conversion efficiency, improve the effect of light absorption

Inactive Publication Date: 2009-07-08
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In this new type of flexible transfer substrate solar cell structure, low-cost metal aluminum foil can be used as a temporary substrate, but there are many mechanical scratches and pits on the surface of the untreated metal aluminum foil due to rolling and transportation. , while the prepared front electrode (SnO 2 , ITO, etc.) and silicon thin-film batteries are all on the order of microns. The existence of these scratches will make it difficult for these films to be dense and cannot completely cover the surface of the metal foil, deteriorating the performance of the battery, and more seriously, when it needs to be removed In the follow-up process of the metal aluminum foil temporary substrate of the battery, the battery will be affected by the corrosive liquid and fall off, which will cause the performance of the solar battery to decrease or even become unusable

Method used

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  • Method for producing solar cell with flexible transfer underlay by using suede temporary underlay
  • Method for producing solar cell with flexible transfer underlay by using suede temporary underlay
  • Method for producing solar cell with flexible transfer underlay by using suede temporary underlay

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Embodiment 1

[0037] The electrolyte uses perchloric acid (or other corresponding acid chemicals that are not easy to damage aluminum foil) and absolute ethanol (or other organic solvents), and the ratio is 1:4;

[0038] Surface treatment voltage: 12V;

[0039] Electrolyte temperature: 15°C;

[0040] Electrode spacing: 2.5cm;

[0041] Surface treatment time: 2.5 minutes.

[0042] After the treatment of metal aluminum foil, SnO was first prepared by ultrasonic spray technology 2 Transparent conductive film, laser cutting and scribing, and then put it into the PECVD deposition system after ultrasonic cleaning to deposit P, I, N layers in the battery. After deposition, laser cutting and scribing are used to prepare the back electrode A1 by evaporation technology , and then laser cut and scribed, laminated with a polymer, put into an etching solution after lamination to remove the temporary substrate aluminum foil, and then pack the battery.

Embodiment 2

[0044] The electrolyte uses perchloric acid (or other corresponding acid chemicals that are not easy to damage aluminum foil) and absolute ethanol (or other organic solvents), and the ratio is 1:4;

[0045] Surface treatment voltage: 18.5V;

[0046] Electrolyte temperature: 2°C;

[0047] Electrode spacing: 4cm;

[0048] Surface treatment time: 1 minute.

[0049]It is worth noting that one of the effective ways to improve silicon thin-film solar cells is to use a light-trapping structure. The transparent conductive front electrode with textured structure is the key factor for the efficient light-trapping structure of silicon thin film solar cells. In order to achieve a good light-trapping structure in the flexible transfer substrate solar cell, when the surface of the aluminum foil is surface-treated, the surface of the aluminum foil has a certain velvet by controlling the surface treatment process parameters, so that the transparent conductive material prepared on the surfa...

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Abstract

The invention discloses a method for preparing flexible transfer substrate solar battery by luster temporary substrate, wherein, the method is that a metal substrate is immerged into electrolyte for surface processing so that the metal substrate has pile face structure. The pile face metal aluminum foil is prepared with a front electrode, laser cutting, preparation of P-I-N layer, laser cutting, preparation of back electrode, laser cutting, and lamination polymer substrate, as a result, the metal substrate is removed to prepare the flexible transfer substrate solar battery. The metal substrate as the flexible transfer substrate of the invention has a neat surface and pile face structure, and the front electrode deposited on the surface has a certain woolen degree, such that the prepared solar battery has good light trap structure, thereby improving efficiency of the solar battery.

Description

【Technical field】 [0001] The invention relates to a manufacturing process of a thin-film solar cell device, in particular to a method for preparing a flexible transfer substrate solar cell using a suede temporary substrate 【Background technique】 [0002] The development of human society is accompanied by the increase of energy consumption. At the same time, the reserves of conventional energy (such as oil, coal, etc.) are decreasing year by year, and the use of conventional energy causes environmental pollution and climate deterioration, leading to increasingly serious pollution and damage to the earth's ecological environment. . Therefore, the research, development and utilization of "renewable energy" and "green energy" are becoming more and more important and urgent. Among them, solar energy is undoubtedly the first choice for human future energy. Since the 1970s, many countries have set off an upsurge of solar photovoltaic power generation. The United States, Japan, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/18
CPCY02P70/50
Inventor 赵颖张晓丹魏长春熊绍珍耿新华孙建张德坤薛俊明侯国付任慧志张建军蔡宁
Owner NANKAI UNIV