Flexible solar cell and preparation method thereof

A solar cell and battery technology, applied in the field of solar cells, can solve the problems of complex production process, short service life, poor device performance, etc., and achieve the effects of high electrical conductivity, lower production costs, and avoid environmental pollution and resource waste.

Inactive Publication Date: 2020-06-23
紫石能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a flexible solar cell and its preparation method, which are used to at least partially solve the problems of complex production process, high cost, waste of resources, environmental protection, poor device performance and short service life

Method used

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  • Flexible solar cell and preparation method thereof
  • Flexible solar cell and preparation method thereof
  • Flexible solar cell and preparation method thereof

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Embodiment 1

[0042] Such as figure 1 As shown, Embodiment 1 of the present invention provides a flexible solar cell. The flexible solar cell includes a substrate layer 1 and a battery layer 2. The battery layer 2 is formed on the substrate layer 1. The material of the substrate layer 1 is graphite paper.

[0043] The flexible solar cell provided by Example 1 of the present invention can directly transfer the battery layer 2 by using flexible graphite paper as the material of the substrate layer 1. In this way, the substrate layer 1 does not need to be removed, which not only simplifies the production process, but also avoids environmental pollution. and waste of resources. In addition, graphite paper has the characteristics of high thermal conductivity and high electrical conductivity, so it can replace the back metal electrode, and can also improve the thermal conductivity of flexible solar cells, thereby improving the stability and life of flexible solar cells. Moreover, compared with e...

Embodiment 2

[0055] Embodiment 2 of the present invention provides a flexible solar cell. The difference between the flexible solar cell in Embodiment 2 and the flexible solar cell in Embodiment 1 is that the number of buffer layers is different.

[0056] Such as figure 2 As shown, the flexible solar cell provided by Example 2 of the present invention includes a second buffer layer 7 and a third buffer layer 8 stacked, and the second buffer layer 7 and the third buffer layer 8 are located between the battery layer 2 and the substrate layer 1 , and the second buffer layer 7 is adjacent to the substrate layer 1 , and the third buffer layer 8 is adjacent to the battery layer 2 .

[0057] The material of the second buffer layer 7 is lattice-matched with the graphite paper, and the material of the third buffer layer 8 is lattice-matched with the material of the battery layer 2. Like this, by arranging two buffer layer structures, it can be respectively connected with the substrate layers on bo...

Embodiment 3

[0061] Embodiment 3 of the present invention provides a method for preparing a flexible solar cell, the method is used to prepare the flexible solar cell described in Embodiment 1, combining figure 1 with image 3 As shown, the method includes the following steps:

[0062] S11 , preparing a battery layer 2 on the substrate layer 1 .

[0063] Wherein, the material of the substrate layer 1 is graphite paper, and the thickness of the substrate layer 1 is 10-100 microns. Preferably, the thermal conductivity of the graphite paper is greater than 1500W / mK. In this way, the thermal conductivity of the flexible solar cell can be improved, thereby improving the flexibility of the flexible solar energy. Battery stability and life.

[0064] It should be noted that, in order to remove impurities and ensure the crystal growth quality of the battery layer 2, the substrate layer 1 needs to be cleaned before use. Specifically, it can be rinsed with acetone, ethanol and deionized water for 3...

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Abstract

The invention provides a flexible solar cell and a preparation method thereof. The flexible solar cell comprises a substrate layer and a cell layer formed on the substrate layer, wherein the materialof the substrate layer is graphite paper, the cell layer can be directly transferred, and the operation of removing the substrate in the traditional flexible solar cell preparation process is not needed, so that the production process can be simplified, and environmental pollution and resource waste can be avoided. The graphite paper has the characteristics of high heat conductivity coefficient and high conductivity, so that a back metal electrode can be replaced, the heat conductivity of the cell structure can be improved, the stability of the cell is improved, and the service life of the cell is prolonged. Moreover, compared with an existing substrate material, the graphite paper is low in price, so that the production cost can be reduced.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a flexible solar cell and a preparation method thereof. Background technique [0002] Flexible solar cells have the characteristics of light weight, softness, rollability and folding, and are used more and more widely. The conversion efficiency of traditional flexible silicon-based solar cells is only 4%-10%, while the photoelectric conversion efficiency of copper indium gallium selenium flexible solar cells is about 10%, and the photoelectric conversion efficiency of IV-V semiconductor flexible solar cells can reach more than 30%, so , with high photoelectric conversion efficiency IV-V semiconductor flexible solar cells have been widely used. [0003] Existing IV-V semiconductor flexible solar cells usually use sapphire, silicon carbide, germanium, etc. as substrate materials. These materials are expensive, have low thermal conductivity, and limited resources, which will no...

Claims

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Application Information

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IPC IPC(8): H01L31/0392H01L31/075H01L31/18
CPCH01L31/03926H01L31/075H01L31/184H01L31/1844H01L31/1856H01L31/1852Y02E10/548Y02E10/544Y02P70/50
Inventor 罗轶李琳琳宋士佳
Owner 紫石能源有限公司
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