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Perovskite solar cell based on pre-oxidation composite hole transport layer and preparation method thereof

A hole transport layer and solar cell technology, applied in the field of solar cells, can solve problems such as long oxidation time and the influence of perovskite structure, and achieve the effects of improving performance, improving hole transport capacity, and solving bottlenecks

Inactive Publication Date: 2019-09-20
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the post-oxidation process of the film cannot avoid the direct contact between the perovskite layer and the moisture in the air, and after the film is made, the oxidation time in the atmospheric environment is longer than that in the pure oxygen environment, so the impact on the structure of the perovskite is huge.

Method used

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  • Perovskite solar cell based on pre-oxidation composite hole transport layer and preparation method thereof
  • Perovskite solar cell based on pre-oxidation composite hole transport layer and preparation method thereof

Examples

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Embodiment 1

[0025] A method for preparing a perovskite solar cell based on a pre-oxidized composite hole transport layer, comprising sequentially preparing an electron transport layer, a perovskite light-absorbing layer, a composite hole transport layer, and a top electrode on a transparent conductive substrate;

[0026] Preparation of the composite hole transport layer: use oxygen with a purity of 99.9000% at 1×10 3 Oxidize 72.3mg / mL Spiro-OMeTAD solution in a vacuum sealed space for 5 minutes, mix and stir with 10mg / mL PTAA at a volume ratio of 1:1 to prepare a precursor solution, and then prepare a composite hole transport layer with a thickness of 80nm.

[0027] The concrete steps of this method are:

[0028] Step S10, using detergent, deionized water, acetone and ethanol to perform ultrasonic cleaning on the surface of the ITO transparent conductive glass substrate whose surface roughness is less than 1 nm in sequence, and blow dry with dry nitrogen after cleaning;

[0029] Step S20...

Embodiment 2

[0038] A method for preparing a perovskite solar cell based on a pre-oxidized composite hole transport layer, comprising sequentially preparing an electron transport layer, a perovskite light-absorbing layer, a composite hole transport layer, and a top electrode on a transparent conductive substrate;

[0039] Preparation of the composite hole transport layer: use oxygen with a purity of 99.0000% at 1×10 3 Oxidize 72.3 mg / mL Spiro-OMeTAD solution in Pa vacuum sealed space for 60 minutes, mix and stir with 25 mg / mL PTAA at a volume ratio of 1:1 to prepare a precursor solution, and prepare a composite hole transport layer with a thickness of 80 nm.

[0040] The preparation method of its perovskite solar cell is as follows:

[0041] The specific steps for preparing the electron transport layer, the perovskite light-absorbing layer, and the top electrode in the preparation method of this example are the same as those in Example 1, and the difference lies in the specific preparation...

Embodiment 3

[0044] A method for preparing a perovskite solar cell based on a pre-oxidized composite hole transport layer, comprising sequentially preparing an electron transport layer, a perovskite light-absorbing layer, a composite hole transport layer, and a top electrode on a transparent conductive substrate;

[0045] Preparation of the composite hole transport layer: use oxygen with a purity of 99.9000% at 1×10 3 Oxidize 72.3mg / mL Spiro-OMeTAD solution in Pa vacuum sealed space for 60 minutes, mix and stir with 35mg / mL PTAA at a volume ratio of 1:1 to prepare a mixed hole transport layer precursor, and prepare a composite hole transport layer with a preparation degree of 80nm Floor.

[0046] Most of the specific preparation steps in the preparation method of this embodiment are the same as in Example 1, only the following differences:

[0047] Weigh 35mg of PTAA, an organic hole material that does not need to be oxidized, dissolve it in 1mL of chlorobenzene, prepare a mixed solution ...

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Abstract

The invention discloses a perovskite solar cell based on a pre-oxidation composite hole transport layer and a preparation method thereof.An electron transport layer, a perovskite light absorbing layer, a composite hole transport layer and a top electrode are prepared on a transparent conductive substrate in turn. The specific process of preparing the composite hole transport layer is as follows: a Spiro-OMeTAD solution oxidized by piping oxygen and an organic hole transport material solution without oxidation are mixed to prepare a precursor solution, and then the precursor solution is applied to the perovskite light absorbing layer to prepare the composite hole transport layer. The composite hole transport layer is subjected to the pre-solution oxidation process, so that that post-oxidation process of the hole transport layer thin film can be effectively replaced and the degradation of the perovskite light absorbing layer thin film can be suppressed; and the composite hole transport layer can further improve the hole transport capability, passivate the grain boundary and regulate the energy band so that the performance of the perovskite solar cell can be improved and the bottleneck of the current hole transport can be solved.

Description

technical field [0001] The invention relates to a perovskite solar cell based on a pre-oxidized composite hole transport layer and a preparation method, and belongs to the technical field of solar cells. Background technique [0002] In recent years, environmental pollution has seriously threatened the development of society and economy and the survival of everyone. Today, when the global fossil energy is increasingly depleted and environmental pollution is increasing, solar energy has become an ideal supplementary and alternative energy source for non-renewable energy sources such as oil, coal, and natural gas. With the rapid development of the photovoltaic industry, the conversion efficiency of solar cells has been continuously improved and the cost has been continuously reduced, making the prospect of photovoltaic power generation brighter and broader. Among various renewable energy sources, solar energy is an inexhaustible source of energy, clean and without any polluti...

Claims

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Application Information

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IPC IPC(8): H01L51/48H01L51/42
CPCH10K71/10H10K71/15H10K30/30Y02E10/549
Inventor 马柱黄德军肖政周薇亚张华张富
Owner SOUTHWEST PETROLEUM UNIV
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