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Solar cell based on two-dimensional perovskite single crystal and production method thereof

A technology of solar cells and perovskites, applied in circuits, photovoltaic power generation, electrical components, etc., to achieve the effects of less interface defects, improved photoelectric conversion efficiency, and improved environmental stability

Inactive Publication Date: 2020-07-24
SHANGHAI NATLINEAR ELECTRONICS CO LTD
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Problems solved by technology

[0006] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a solar cell based on a two-dimensional perovskite single crystal and its preparation method, which is used to solve the environmental problems faced by perovskite solar cells in the prior art Stability and photoelectric conversion efficiency issues

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  • Solar cell based on two-dimensional perovskite single crystal and production method thereof
  • Solar cell based on two-dimensional perovskite single crystal and production method thereof
  • Solar cell based on two-dimensional perovskite single crystal and production method thereof

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preparation example Construction

[0065] refer to image 3 and Figure 4 , this embodiment also provides a method for preparing a solar cell based on a two-dimensional perovskite single crystal, which specifically includes the following steps:

[0066] providing a substrate 100;

[0067] forming a first electrode layer 200 on the substrate 100;

[0068] forming a first conductive transmission layer 300 on the first electrode layer 200;

[0069] A two-dimensional perovskite single crystal 400 is formed on the first conductive transport layer 300, and the two-dimensional perovskite single crystal 400 includes N layers of two-dimensional perovskite single layers, N≥2; the two-dimensional calcium The titanite monolayer includes n layers of corner-sharing lead iodide octahedra, n-1 layers of organic ligands A and 2 layers of organic ligands B, n≥1, and the two-dimensional perovskite monolayers all have the same n value, the organic ligand A is embedded in the gap of the angle-sharing lead iodide octahedron, the o...

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Abstract

The invention provides a solar cell based on a two-dimensional perovskite single crystal and a production method thereof. The two-dimensional perovskite single crystal is used as a light absorption material of the solar cell, the two-dimensional perovskite single crystal comprises N layers of two-dimensional perovskite single layers, and the N is greater than or equal to 2; the two-dimensional perovskite single layer comprises n layers of common-angle lead iodide octahedrons, n-1 layers of organic ligands A and two layers of organic ligands B, wherein n is greater than or equal to 1, and the two-dimensional perovskite single layers have the same n value; the organic ligands A are embedded into a gap of the common-angle lead iodide octahedrons, the organic ligands B are located on two opposite sides of the common-angle lead iodide octahedrons respectively, a chemical formula of the two-dimensional perovskite single layers is B2An-1PbnI3n+1, and the number of carbon atoms of the organicligands B is larger than that of the organic ligands A; and the solar cell based on the two-dimensional perovskite single crystal has advantages of high environmental stability and high photoelectricconversion efficiency.

Description

technical field [0001] The invention belongs to the field of semiconductor optoelectronic devices, and relates to a solar cell based on a two-dimensional perovskite single crystal and a preparation method thereof. Background technique [0002] Since solar energy does not cause any pollution to the environment and is inexhaustible, it has been recognized by countries all over the world as a new type of energy. [0003] The utilization of solar energy is mainly to generate electricity through solar cells. Thanks to the high fluorescence quantum yield and electron mobility, three-dimensional perovskites can be widely used in optoelectronic devices such as solar cells. With the continuous improvement of the efficiency of 3D perovskite solar cells, their stability has also received more and more attention. Two-dimensional perovskites have better moisture resistance than three-dimensional perovskites, making the environmental stability of two-dimensional perovskites much higher t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCH10K85/30H10K30/00Y02E10/549
Inventor 蒋小强何云许剑刘桂芝
Owner SHANGHAI NATLINEAR ELECTRONICS CO LTD
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