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Perovskite solar cell based on double-layer composite hole transport layer and preparation method

A hole transport layer and solar cell technology, applied in the field of solar cells, can solve the problems of instability, instability of perovskite solar cells, and high cost of organic holes, achieve low cost, improve carrier mobility, and improve The effect of hole transport capability

Inactive Publication Date: 2019-09-17
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, high-efficiency perovskite solar cells use organic hole transport materials, but the cost of organic holes is high and unstable, which is an important factor leading to the instability of perovskite solar cells

Method used

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  • Perovskite solar cell based on double-layer composite hole transport layer and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A method for preparing a perovskite solar cell based on a double-layer composite hole transport layer includes sequentially preparing an electron transport layer, a perovskite structure light-absorbing layer, an organic-inorganic double-layer composite hole transport layer, and a top electrode on a transparent conductive substrate;

[0025] To prepare the organic-inorganic double-layer composite hole transport layer: use oxygen with a purity of 99.9000% in 1×10 3 The Spiro-OMeTAD solution with a concentration of 72.3mg / mL was oxidized for 60 minutes in the Pa vacuum sealed space to prepare the organic hole transport layer and CuI was used to prepare the organic hole transport layer, and finally an organic-inorganic double-layer composite hole with a thickness of 80nm was formed Transport layer.

[0026] The specific steps of the method are:

[0027] Step S10, using detergent, deionized water, acetone and ethanol to sequentially ultrasonically clean the surface of the ITO trans...

Embodiment 2

[0037] A method for preparing a perovskite solar cell based on a double-layer composite hole transport layer includes sequentially preparing an electron transport layer, a perovskite structure light-absorbing layer, an organic-inorganic double-layer composite hole transport layer, and a top electrode on a transparent conductive substrate;

[0038] To prepare the organic-inorganic double-layer composite hole transport layer: use oxygen with a purity of 99.9000% in 1×10 3 The Spiro-OMeTAD solution with a concentration of 72.3mg / mL was oxidized for 60 minutes in the Pa vacuum sealed space to prepare the organic hole transport layer and CuI was used to prepare the organic hole transport layer, and finally an organic-inorganic double-layer composite hole with a thickness of 80nm was formed Transport layer.

[0039] Most of the specific preparation steps in the preparation method of this embodiment are the same as in Example 1, except for the following differences:

[0040] Dissolve CuSCN ...

Embodiment 3

[0042] A method for preparing a perovskite solar cell based on a double-layer composite hole transport layer includes sequentially preparing an electron transport layer, a perovskite structure light-absorbing layer, an organic-inorganic double-layer composite hole transport layer, and a top electrode on a transparent conductive substrate;

[0043] To prepare the organic-inorganic double-layer composite hole transport layer: use a purity of 99.0000% oxygen in 1×10 3 The Spiro-OMeTAD solution with a concentration of 72.3mg / mL was oxidized for 60 minutes in the Pa vacuum sealed space to prepare the organic hole transport layer and CuI was used to prepare the organic hole transport layer, and finally an organic-inorganic double-layer composite hole with a thickness of 80nm was formed Transport layer.

[0044] Most of the specific preparation steps in the preparation method of this embodiment are the same as in Example 1, except for the following differences:

[0045] Weigh 72.3mg Spiro-O...

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Abstract

The invention discloses a perovskite solar cell based on a double-layer composite hole transport layer and a preparation method. An electron transport layer, a perovskite structure light absorption layer, an organic-inorganic double-layer composite hole transport layer and a top electrode are sequentially prepared on a transparent conductive substrate. The specific process for preparing the organic-inorganic double-layer composite hole transport layer comprises the following steps of: introducing oxygen into a Spiro-OMeTAD solution for oxidation, stirring, carrying out spin coating to prepare a pre-oxidization Spiro-OMeTAD hole transport layer, and preparing an inorganic hole transport layer from an inorganic hole material solution. According to the invention, based on the organic-inorganic double-layer hole transport layer, through the pre-oxidation Spiro-OMeTAD hole transport layer and the inorganic hole transport layer, the perovskite thin film degradation problem caused by the post-oxidation of a traditional hole transport layer can be effectively inhibited and the carrier transport capability and the energy band matching of the hole transport layer are remarkably improved, so that the performance of the perovskite solar cell is improved.

Description

Technical field [0001] The invention relates to a perovskite solar cell based on a double-layer composite hole transport layer and a preparation method thereof, and belongs to the technical field of solar cells. Background technique [0002] With the development and progress of human society, people's consumption and dependence on energy are gradually increasing. At present, about 74% of the energy consumed by humans comes from traditional fossil energy, mainly coal, oil and natural gas. Due to human over-exploitation and utilization, non-renewable energy is gradually experiencing a crisis of exhaustion. In the face of such a severe energy crisis, the development and effective use of renewable clean energy has become a focus of attention. Among various renewable energies, solar energy has inexhaustible energy, clean and without any pollution, and has become one of the most promising new energy sources. In recent years, solar cell technology has made great progress. Commerciall...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/48
CPCH10K30/10H10K30/00Y02E10/549
Inventor 马柱张富肖政黄德军周薇亚张华
Owner SOUTHWEST PETROLEUM UNIV
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