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Electron transport layer for perovskite solar cells based on three-dimensional sea urchin-like zno superstructure array and its preparation method and application

A technology of electron transport layer and solar cell, applied in circuits, electrical components, photovoltaic power generation, etc., can solve problems such as large gaps, and achieve the effects of increasing utilization, reducing recombination rate, and stabilizing the structure

Active Publication Date: 2020-03-17
KAILI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the performance of the material has been improved after the research, there is still a big gap from the industrial production

Method used

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  • Electron transport layer for perovskite solar cells based on three-dimensional sea urchin-like zno superstructure array and its preparation method and application
  • Electron transport layer for perovskite solar cells based on three-dimensional sea urchin-like zno superstructure array and its preparation method and application
  • Electron transport layer for perovskite solar cells based on three-dimensional sea urchin-like zno superstructure array and its preparation method and application

Examples

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Embodiment 1

[0033] A perovskite solar cell electron transport layer based on a three-dimensional sea urchin-like ZnO superstructure array of the present invention, the perovskite solar cell electron transport layer comprising a three-dimensional sea urchin-like ZnO superstructure array and a perovskite organic-inorganic hybrid system CH 3 NH 3 PB 3 ; Perovskite organic-inorganic hybrid system CH 3 NH 3 PB 3 Coated on the 3D sea urchin-like ZnO superstructure array.

[0034] In this embodiment, the three-dimensional sea urchin-shaped ZnO superstructure array is composed of the three-dimensional sea urchin-shaped ZnO superstructure; the three-dimensional sea urchin-shaped ZnO superstructure is composed of ZnO nanoneedles with a common center; the radius of the ZnO nanoneedles is 60 nm.

[0035] In this embodiment, the specific surface area of ​​the electron transport layer of the perovskite solar cell is 119.66m 2 / g.

[0036] In this example, the perovskite-type organic-inorganic hy...

Embodiment 2

[0054] A method for preparing the electron transport layer of a perovskite solar cell based on a three-dimensional sea urchin-shaped ZnO superstructure array of the present invention is basically the same as the preparation method in Example 1, the only difference being that the three-dimensional sea urchin-shaped ZnO superstructure array in step (6) The molar concentrations of zinc nitrate and hexamethylenetetramine in the structure array precursor solution were both 0.8mol / L.

Embodiment 3

[0056] A method for preparing the electron transport layer of a perovskite solar cell based on a three-dimensional sea urchin-shaped ZnO superstructure array of the present invention is basically the same as the preparation method in Example 1, the only difference being that the three-dimensional sea urchin-shaped ZnO superstructure array in step (6) The molar concentrations of zinc nitrate and hexamethylenetetramine in the structure array precursor solution were both 0.9mol / L.

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Abstract

The invention discloses a perovskite solar cell electron transport layer based on a three-dimensional sea urchin-like ZnO superstructure array and its preparation method and application. The perovskite solar cell electron transport layer comprises a three-dimensional sea urchin-like ZnO superstructure array and perovskite Mineral organic-inorganic hybrid system CH 3 NH 3 PB 3 , a perovskite-type organic-inorganic hybrid system CH 3 NH 3 PB 3 Coated on the 3D sea urchin-like ZnO superstructure array. Its preparation method includes PbI 2 coated on the 3D sea urchin-like ZnO superstructure array, and then impregnated in CH 3 NH 3 I in isopropanol solution. The electron transport layer of the present invention has a large specific surface area and high porosity, can increase the utilization rate of sunlight, and can reduce the electron-hole recombination rate, and its preparation method is simple and easy to control. The electron transport layer of the present invention is applied to In solar cells, the conversion efficiency of the cells can be improved.

Description

technical field [0001] The invention belongs to the field of functional materials, and in particular relates to an electron transport layer of a perovskite solar cell based on a three-dimensional sea urchin-like ZnO superstructure array and a preparation method and application thereof. Background technique [0002] In recent years, the outstanding performance of organic / inorganic hybrid perovskite solar cells has brought great hope for the development of solar cells with high efficiency, low cost, and high photoelectric conversion efficiency, which has attracted great attention from the academic community and has developed rapidly. Although this type of perovskite material has appeared decades ago, its low stability, high electron-hole recombination rate, and complicated preparation process limit the application of this type of material. [0003] In order to improve the performance of materials and make perovskite solar cells industrialized and used by people, researchers ha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/42H01L51/48
CPCH10K30/352H10K30/35Y02E10/549
Inventor 李荡
Owner KAILI UNIV
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