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Preparation method and product of large-area all-solid-state perovskite mesoscopic solar cells

A technology based on solar cells and perovskites, applied in the field of solar cells, can solve problems such as cell efficiency attenuation, extreme instability, and solar cell performance degradation, and achieve excellent performance, improve filling performance, and optimize layout.

Active Publication Date: 2018-05-22
HUBEI WONDER SOLAR LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the conversion efficiency of this perovskite solar cell is only 5.1%, which is seriously lower than the photoelectric conversion efficiency of the current traditional small-area cells. still not practical
[0004] Further studies have shown that the reason why the current large-area solar cells have low photoelectric conversion efficiency is that the increase in the effective light-absorbing area causes uneven filling of perovskite, making it extremely unstable at high temperatures. Inhomogeneous and unstable mineral filling will directly lead to a sharp decline in the performance of large-area solar cells in all aspects, making the current battery performance unable to meet industrial applications.

Method used

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  • Preparation method and product of large-area all-solid-state perovskite mesoscopic solar cells
  • Preparation method and product of large-area all-solid-state perovskite mesoscopic solar cells

Examples

Experimental program
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Effect test

Embodiment 1

[0025] In this example, the specific process steps for preparing a large-area all-solid-state perovskite mesoscopic solar cell are as follows:

[0026] First, use a cutting machine to cut the conductive glass into glass sheets of a certain size. For example, the preferred size in this embodiment is 100mm×100mm, but it can also be other sizes. Use a laser to cut the conductive layer of the glass sheet at a certain distance from one of the edges. Etch an insulating strip parallel to the edge (preferably such as 5 mm from the edge in this embodiment), and etch a plurality of parallel insulating strips in the remaining area to divide the glass sheet into multiple regions, such as in this embodiment It is preferable to etch 4 parallel insulating strips again, thereby dividing the glass sheet into five positive electrode regions and negative electrode regions, so that the conductive layer cannot be completely conducted, and the etched glass sheet is ultrasonically cleaned with deterg...

Embodiment 2

[0035] In the present embodiment, different from Embodiment 1, the distance between the insulating tape and one edge of the glass sheet is preferably 3.5 mm, and the number of parallel insulating tape strips etched is preferably eight in the present embodiment, so that the glass sheet is divided into 8 areas to be printed that are not connected to each other.

[0036] Using screen printing technology, print a strip of silver paste parallel to the insulating tape on each area to be printed, the size can be the same as or different from the embodiment, for example, 0.5mm×100mm in this embodiment, and dry to form a metal wire . Print a layer of glass paste on the metal wires to completely cover the metal wires. After drying, it is sprayed on the surface of the glass sheet at 450°C to form a dense titanium dioxide film.

[0037] Correspondingly, print 8 titanium dioxide pastes on the dense titanium dioxide thin film layer, the size can be the same as that in Example 1, for examp...

Embodiment 3

[0041] In this embodiment, compared with Embodiment 2, the difference is that the number of parallel insulating strips etched is preferably ten in this embodiment, so that the glass sheet is divided into ten non-conductive regions to be printed. .

[0042] In addition, in the process of printing the silver paste parallel to the insulating tape, the size of the silver paste may be different from that in Embodiment 2, for example, the size of the silver paste in this embodiment is preferably 0.5mm×20mm. The spraying temperature of the titanium dioxide thin film may also be the same as or different from that in Embodiment 2. For example, the spraying temperature in this embodiment is 500° C., of course, the spraying temperature can be selected according to specific requirements.

[0043] The corresponding number of strips of titanium dioxide paste printed on the titanium dioxide thin film layer is 10, and the size may be different from that of Embodiment 2, for example, it is 5.5...

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Abstract

The invention discloses a method for preparing a large-area all-solid-state perovskite mesoscopic solar cell. The method includes etching an insulating layer on the conductive layer of conductive glass and forming a region to be printed, and printing layer by layer in the region to be printed. Metal wire, printing metal protective layer, spraying dense layer, printing nanocrystalline layer, printing insulating layer and printing porous counter electrode, and filling perovskite precursor solution, wherein the perovskite precursor solution includes pentaaminovaleric acid, and its The content of the perovskite precursor solution is 2%-6%. At the same time, the perovskite precursor solution is dripped continuously from the edge of the insulating layer etched on the conductive glass conductive layer, so as to realize the uniform filling of the perovskite precursor solution . After encapsulation, a perovskite all-solid-state mesoscopic solar cell with a large area is obtained. The photoelectric conversion efficiency of the large-area perovskite solar cell prepared by the invention reaches more than 10%, and can work stably under the condition of continuous light for 2000 hours.

Description

technical field [0001] The invention relates to the technical field of mesoscopic solar cell preparation, in particular to a method for preparing an all-solid-state perovskite mesoscopic solar cell and the solar cell prepared by the method. Background technique [0002] As the third generation of solar cells, perovskite solar cells have attracted more and more attention due to their high photoelectric conversion efficiency, low cost and no pollution. However, this high-efficiency solar cell uses organic hole transport materials and noble metal gold electrodes. This structure brings many practical problems, such as small effective area, high manufacturing cost, limited material sources, and high temperature instability. And other defects, which greatly hinder the practical application of perovskite all-solid-state mesoscopic solar cells to the market. In addition, the effective light-absorbing area of ​​the battery researched in the laboratory at this stage is very small. Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/48H01L51/46H01L51/42
CPCH10K71/12H10K71/611H10K85/00H10K30/15Y02E10/549
Inventor 韩宏伟司思
Owner HUBEI WONDER SOLAR LLC
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