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Perovskite solar cell based on crystalline hydrophobic micromolecule and hydrophobic polymer composite hole transport material and preparation method thereof

A technology of hole transport material and hydrophobic polymer, which is used in circuits, photovoltaic power generation, electrical components, etc. to achieve the effect of no hysteresis effect, efficient charge transfer and good stability

Pending Publication Date: 2022-02-18
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing perovskite solar cells are difficult to have high efficiency, high stability, and low cost at the same time, to provide a simple preparation process, low cost, high photoelectric conversion efficiency, and excellent stability Preparation method of perovskite solar cells

Method used

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  • Perovskite solar cell based on crystalline hydrophobic micromolecule and hydrophobic polymer composite hole transport material and preparation method thereof
  • Perovskite solar cell based on crystalline hydrophobic micromolecule and hydrophobic polymer composite hole transport material and preparation method thereof
  • Perovskite solar cell based on crystalline hydrophobic micromolecule and hydrophobic polymer composite hole transport material and preparation method thereof

Examples

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preparation example Construction

[0036] The perovskite solar cell and its preparation method based on crystalline hydrophobic small molecules and hydrophobic polymer composite hole transport materials provided by the present invention comprise the following steps:

[0037] S1. Pretreating the transparent conductive glass substrate;

[0038] S2. Spin-coat a mixed solution of crystalline hydrophobic small molecules and hydrophobic polymers on a transparent conductive glass substrate. The crystalline hydrophobic small molecules are N,N'-diphenyl-N,N'-(1-naphthyl)- 1,1'-biphenyl-4,4'-diamine, N,N'-bis(3-methylphenyl)-N,N'-diphenyl-1,1'-biphenyl-4, 4'-diamine, and one or more of related derivatives thereof, to obtain a composite hole transport layer;

[0039] S3. heat-treating the composite hole transport layer to obtain a heat-treated composite hole transport layer;

[0040] S4. spin-coating and depositing a perovskite active layer on the surface of the heat-treated composite hole transport layer;

[0041] S5....

Embodiment 1

[0068] In this example, a perovskite solar cell based on a composite hole transport material of crystalline hydrophobic small molecules and hydrophobic polymers was prepared. The difference between this embodiment and Comparative Example 4 is that: in the above step S2, the PCDTBT:15%NPB thin film deposited on the surface of the ITO substrate by spin coating needs to be heat treated at 120°C for 20min; other steps are basically the same as those of Comparative Example 4. This will not be repeated here.

Embodiment 2-4 and comparative example 5-6

[0070] The difference between Examples 2-4 and Comparative Examples 5-6 and Example 1 is that in the above step S2, the amount of crystalline hydrophobic small molecule NPB added in the PCDTBT:NPB film deposited on the surface of the ITO substrate by spin coating accounts for The mass ratio of the material PCDTBT is different, and the other steps are basically the same as those in Example 1, and will not be repeated here. The ratio of the amount of NPB added in the hole transport materials of Examples 2-4 and Comparative Examples 5-6 is shown in the following table:

[0071]

[0072]

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Abstract

The invention discloses a perovskite solar cell based on a crystalline hydrophobic micromolecule and hydrophobic polymer composite hole transport material and a preparation method of the perovskite solar cell. According to the preparation method, the crystalline hydrophobic small molecule material is simply blended and doped, and then heat treatment is performed, so that the conductivity of the original hydrophobic polymer-based hole transport layer is improved while the hydrophobic performance is not sacrificed, and the prepared perovskite solar cell has excellent photoelectric conversion efficiency and excellent stability. In addition, due to the fact that charge transmission of the selected electron transmission material and the hole transmission material is balanced, the battery almost has no hysteresis effect. The process flow is simple, the raw material cost is low, the action effect is outstanding, and the application prospect is wide.

Description

technical field [0001] The invention relates to the technical field of solar cell preparation, in particular to a perovskite solar cell based on a crystalline hydrophobic small molecule and a hydrophobic polymer composite hole transport material and a preparation method thereof. Background technique [0002] The hole transport layer is an important part of the perovskite solar cell. In the solar cell, it collects and transports the holes injected by the perovskite absorbing layer, realizes the effective separation of electrons and holes, and blocks the perovskite layer from the outside. The role of direct contact with water and oxygen in the environment, therefore, the choice of hole transport materials directly determines the photoelectric conversion efficiency and stability of perovskite solar cells. [0003] High-performance hole transport materials should have the characteristics of simple synthesis, low cost, matching with the energy level of perovskite materials, good ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/48H01L51/42H01L51/46
CPCH10K71/12H10K85/111H10K85/113H10K85/631H10K30/00Y02E10/549
Inventor 杨丽燕王栋王涛李沐芳马俊刘琪
Owner WUHAN TEXTILE UNIV
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