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Light absorption layer material of solar cell, ternary cation perovskite solar cell and preparation method of ternary cation perovskite solar cell

A solar cell and light-absorbing layer technology, applied in the field of solar cells, can solve problems such as difficult repeatability, low photovoltaic parameters, and restrictions on the industrial development of perovskite solar cells, achieve high energy conversion efficiency, suppress phase separation, and facilitate The effect of large area blade coating production

Active Publication Date: 2021-07-16
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CH currently produced internationally 3 NH 3 PB 3 Perovskite solar cells (Zhang K, Duan J, Liu F, et al.Low-temperature-deposited SnO2 films efficient planar CH3NH3PbI3 photovoltaics[J].Journal of Materials Science,2021,56(1):1-14.) Generally, the n-i-p structure is adopted, and the photoelectric conversion efficiency is generally around 18%, and it is difficult to achieve the repeatability of experiments in different places. Industrialization development path of mining solar cells

Method used

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  • Light absorption layer material of solar cell, ternary cation perovskite solar cell and preparation method of ternary cation perovskite solar cell
  • Light absorption layer material of solar cell, ternary cation perovskite solar cell and preparation method of ternary cation perovskite solar cell
  • Light absorption layer material of solar cell, ternary cation perovskite solar cell and preparation method of ternary cation perovskite solar cell

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Step 1: Configure the perovskite battery precursor solution

[0057] (1) Add 0.013gCsI, 0.0239gMAI, 0.1462gFAI, 0.484gPbI 2 Mix 0.0024gMABr, 0.0058gPbCl 2 Dissolve it in a mixed solvent of 560 microliters of DMF and 140 microliters of DMSO to obtain a molar amount corresponding to 1 / 3, which is recorded as 2% mol MAPbBrCl 2 Excessive perovskite precursor solution.

[0058] (2) Mix and dissolve the tin oxide nano-aqueous solution in deionized water to obtain 20 mg / ml of SnO 2 solution.

[0059] (3) Take 0.072g of Spiro-OMeTAD solid; dissolve lithium salt LiTFSi in acetonitrile, mix well and configure a concentration of 520mg / ml, take 18 microliters of acetonitrile solution of lithium salt LiTFSi and 29 microliters of tributyl phosphate in Mix evenly in 1ml of chlorobenzene solvent to prepare a 720mg / ml Spiro-OMeTAD solution.

[0060] Step 2: Preparation of Thin Film Battery

[0061] (1) The glass substrate coated with the ITO layer was ultrasonically cleaned with a...

Embodiment 2

[0072] Step 1: Configure the perovskite battery precursor solution

[0073] (1) Add 0.013gCsI, 0.0239gMAI, 0.1462gFAI, 0.484gPbI 2 Mix 0.0047gMABr, 0.0117gPbCl 2 Dissolved in a mixed solvent of 560 microliters of DMF and 140 microliters of DMSO to obtain a molar amount corresponding to 1 / 3, recorded as 4% mol MAPbBrCl 2 Excessive perovskite precursor solution.

[0074] (2) Mix and dissolve the tin oxide nano-aqueous solution in deionized water to obtain 20 mg / ml of SnO 2 solution.

[0075] (3) Take 0.072g of Spiro-OMeTAD solid; dissolve lithium salt LiTFSi in acetonitrile, mix well and configure a concentration of 520mg / ml, take 18 microliters of acetonitrile solution of lithium salt LiTFSi and 29 microliters of tributyl phosphate in Mix evenly in 1ml of chlorobenzene solvent to prepare a 720mg / ml Spiro-OMeTAD solution.

[0076] Step 2: Preparation of Thin Film Battery

[0077] (1) The glass substrate coated with the ITO layer was ultrasonically cleaned with acetone, mic...

Embodiment 3

[0088] Step 1: Configure the perovskite battery precursor solution

[0089] (1) Add 0.013gCsI, 0.0239gMAI, 0.1462gFAI, 0.484gPbI 2 Mix 0.0094gMABr, 0.0234gPbCl 2 Dissolve it in a mixed solvent of 560 microliters of DMF and 140 microliters of DMSO to obtain a molar amount corresponding to 1 / 3, which is recorded as 8% mol MAPbBrCl 2 Excessive perovskite precursor solution.

[0090] (2) Mix and dissolve the tin oxide nano-aqueous solution in deionized water to obtain 20 mg / ml of SnO 2 solution.

[0091] (3) Take 0.072g of Spiro-OMeTAD solid; dissolve lithium salt LiTFSi in acetonitrile, mix well and configure a concentration of 520mg / ml, take 18 microliters of acetonitrile solution of lithium salt LiTFSi and 29 microliters of tributyl phosphate in Mix evenly in 1ml of chlorobenzene solvent to prepare a 720mg / ml Spiro-OMeTAD solution.

[0092] Step 2: Preparation of Thin Film Battery

[0093] (1) The glass substrate coated with the ITO layer was ultrasonically cleaned with a...

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Abstract

The invention discloses a light absorption layer material of a solar cell, a ternary cation perovskite solar cell and a preparation method of the ternary cation perovskite solar cell. The material of the light absorption layer is a perovskite material with 0%-12% by mole of MAPbBrCl2 surplus, and the original perovskite molecular formula is FA0.8 MA0.14 Cs 0.05 PbI3. The active layer of the ternary cation perovskite solar cell is prepared by adding methylamine chloride and lead bromide solids into a prepared perovskite precursor solution, and then annealing and crystallizing through an anti-solvent spin-coating method. According to the light absorption layer material of the solar cell, the ternary cation perovskite solar cell and the preparation method of the ternary cation perovskite solar cell of the invention, the nucleation rate of an intermediate phase can be effectively improved, the precipitation of lead iodide of the perovskite active layer can be inhibited, the fill factor and open-circuit voltage of the device can be improved, and the photoelectric conversion efficiency and stability of the perovskite solar cell can be improved. The perovskite solar cell prepared by the preparation method of the invention has the advantage of low-temperature preparation, and is expected to realize large-area preparation of photovoltaic devices.

Description

technical field [0001] The invention belongs to the field of solar cells, and in particular relates to a light-absorbing layer material of a solar cell, a ternary cationic perovskite solar cell and a preparation method thereof. Background technique [0002] As we know, energy has always been one of the important driving forces for the development of human civilization and culture. With the development of society, new forms of energy are constantly being discovered and utilized, and old energy sources with low utilization rates and low efficiency are gradually being replaced. replace. We are currently relying on fossil energy such as coal, oil, and natural gas to move forward. However, these are non-renewable energy sources. Huge energy pressure problem. The first-generation solar cells with crystalline silicon solar cells as the core have better environmental stability and higher photoelectric conversion performance, but the manufacturing cost is relatively high, the purit...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/46H01L51/44H01L51/48
CPCH10K71/12H10K85/30H10K30/81H10K30/00Y02P70/50
Inventor 王磊王富增叶轩立薛启帆谢燊坤
Owner SOUTH CHINA UNIV OF TECH