Method for preparing perovskite solar cell based on one-step spraying process

A solar cell and perovskite technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as inability to large-scale continuous production, and achieve the effects of efficient and stable conversion efficiency, simple process, and strong operability

Inactive Publication Date: 2017-11-17
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings that the general solution spin coating preparation process cannot be produced continuously on a large scale, and provide a method for preparing a perovskite solar ce

Method used

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  • Method for preparing perovskite solar cell based on one-step spraying process
  • Method for preparing perovskite solar cell based on one-step spraying process
  • Method for preparing perovskite solar cell based on one-step spraying process

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0025] Example 1:

[0026] The patterned ITO conductive glass substrate with a square resistance of 15Ω was washed sequentially with deionized water, absolute ethanol, acetone, and isopropanol, and heated and dried to remove residual solvent. UV ozone treatment for 10 minutes to remove small organic molecules remaining on the surface of the conductive glass.

[0027] A PEDOT:PSS solution with a concentration of 13 g / L was filtered with an aqueous PVDF filter membrane, and 40 μl of the solution was coated on a processed transparent ITO conductive glass substrate of 20 mm×15 mm at a rotation speed of 5000 rpm. The coated substrate was heat-treated at 135°C for 20 minutes, and the excess part was wiped off with a cotton swab to obtain a PEDOT:PSS film as a hole transport layer.

[0028] The lead iodide and potassium iodide amine are formulated into a perovskite precursor solution with a concentration of 400 mg / ml at a molar ratio of 1:1, and the solvent is dimethyl sulfoxide and γ-buty...

Example Embodiment

[0036] Example 2-5:

[0037] The cleaning of the ITO substrate and the preparation method of the hole transport layer, the electron transport layer, the silver electrode, the spraying parameters and the heat treatment method, the addition content of the anti-solvent isopropanol is the same as in Example 1, and the content ratio of GBL and DMSO is changed. The device effects of solar cells are as follows:

[0038] Table 3 Example 2-5 Solar cell device performance

[0039]

Example Embodiment

[0040] Example 6-7

[0041] The cleaning of the ITO substrate and the preparation method of the hole transport layer, the electron transport layer, the silver electrode, the spraying parameters and the heat treatment method. The content ratio of GBL and DMSO is the same as in Example 1. The addition amount of isopropanol is changed to obtain solar energy The device effects of the battery are as follows:

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Abstract

The invention relates to the preparation technology of a perovskite solar cell, and specifically relates to a method for preparing the perovskite solar cell based on a one-step spraying process. The method comprises the steps of preparing a perovskite layer, wherein the preparation method of the perovskite layer comprises the steps of preparing a precursor solution; spraying a substrate with the obtained precursor solution to form a wet film; performing continuous heat treatment on the obtained wet film to obtain the perovskite layer, wherein the precursor solution comprises a precursor material and a perovskite solvent; and the perovskite solvent comprises a mixed solution of dimethyl sulfoxide and <gamma>-butyrolactone at volume ratio of 3:7 to 7:3, and isopropanol which accounts for 2.5-5% of the total volume of the solvent. The method is simple in process, high in operability and continuous and stable in preparation process; the area and thickness of the prepared battery device can be flexibly controlled, and the solar cell is high in conversion efficiency and stable; and therefore, the method provides an effective technological means for industrial production of the perovskite solar cell.

Description

technical field [0001] The invention relates to a perovskite solar cell preparation technology, in particular to a method for preparing a perovskite solar cell based on a one-step spraying process. Background technique [0002] As one of the material foundations for the survival and development of human society, energy occupies an important position. Throughout the history of the development of human society, every major progress of human civilization is accompanied by the improvement and replacement of energy. The development and utilization of energy has greatly promoted the development of the world economy and human society. With the continuous progress of human society, energy has become one of the most important factors restricting the current social and economic development. People still mainly rely on traditional non-renewable energy such as petroleum and coal, while solar energy, wind energy, tidal energy, geothermal energy, etc., as renewable energy, will be the e...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/48
CPCH10K71/12H10K30/10Y02E10/549Y02P70/50
Inventor 王涛姚佳序蔡飞龙
Owner WUHAN UNIV OF TECH
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