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Thickness-insensitive inverse-type thick-film two-dimensional hybrid perovskite solar cell and preparation method thereof

A solar cell and perovskite technology, applied in circuits, electrical components, photovoltaic power generation, etc., can solve problems such as excessive fluctuations in device performance, reduced sensitivity, and insensitivity to film thickness, so as to improve battery efficiency and improve carrier efficiency. Transmission characteristics, the effect of improving light absorption

Active Publication Date: 2021-01-01
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Two-dimensional perovskite materials have better moisture resistance than three-dimensional perovskite, but solar cells based on two-dimensional perovskite are less efficient than three-dimensional perovskite solar cells
At the same time, when the hybrid perovskite battery is prepared by a large-area solution method, the thickness of the hybrid perovskite film is often not completely consistent, resulting in excessive fluctuations in device performance, thus reducing the efficiency of the hybrid perovskite battery. The sensitivity of perovskite film thickness is also very important
At present, there is no public report on the preparation of a film-thickness-insensitive 2D hybrid perovskite solar cell with an inversion structure

Method used

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  • Thickness-insensitive inverse-type thick-film two-dimensional hybrid perovskite solar cell and preparation method thereof
  • Thickness-insensitive inverse-type thick-film two-dimensional hybrid perovskite solar cell and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0028] The ITO glass substrate was ultrasonically washed with detergent, acetone, isopropanol and ethanol for 5 minutes, rinsed with deionized water and dried. After the dried ITO glass substrate was treated with ultraviolet-ozone, a PEDOT:PSS layer with a thickness of about 25nm was prepared by spin coating, and it was baked at 140°C for 15 minutes and then taken out. Mix and dissolve phenethylamine hydriodide, guanidine hydriodide, methylamine hydriodide, and lead iodide in N,N-dimethylformamide, lead iodide and N,N-dimethyl The proportioning of formamide is M mg: 1 milliliter, phenethylamine hydroiodide: guanidine hydroiodide: methylamine hydroiodide: lead iodide (molar ratio) is (2-2x): x: 2 :3, x=0.01, stirred overnight to obtain the precursor solution; adopt the method of solution spin coating, take the precursor solution of 25 ℃ and spin-coat the PEDOT:PSS layer on the surface of the ITO glass substrate at 25 ℃ to form a film, and anneal at 70 ℃ In 5 minutes, a certain...

Embodiment 2

[0031] The ITO glass substrate was ultrasonically washed with detergent, acetone, isopropanol and ethanol for 5 minutes, rinsed with deionized water and dried. After the dried ITO glass substrate was treated with ultraviolet-ozone, a PEDOT:PSS layer with a thickness of about 25nm was prepared by spin coating, and it was baked at 140°C for 15 minutes and then taken out. Mix and dissolve n-butylamine hydriodide, guanidine hydriodide, methylamine hydriodide, and lead iodide in formamide, n-butylamine hydriodide: guanidine hydriodide: methylamine hydriodide Acid acid salt: lead iodide (molar ratio) is (2-2x): x:4:5, x=0.3, stir overnight, obtain precursor solution; Adopt the method for solution spin coating, take the precursor solution of 150 ℃ in The PEDOT:PSS layer on the surface of the ITO glass substrate at 150°C was spin-coated and annealed at 150°C for 20 minutes to obtain a two-dimensional hybrid perovskite thick film material with a thickness of more than 500nm. Electron ...

Embodiment 3

[0033] The ITO glass substrate was ultrasonically washed with detergent, acetone, isopropanol and ethanol for 5 minutes, rinsed with deionized water and dried. After the dried ITO glass substrate was treated with ultraviolet-ozone, a PEDOT:PSS layer with a thickness of about 25nm was prepared by spin coating, and it was baked at 140°C for 15 minutes and then taken out. Mix and dissolve tert-butylamine hydriodide, guanidine hydriodide, methylamine hydriodide, and lead iodide in dimethyl sulfoxide, tert-butylamine hydriodide: guanidine hydriodide: methylamine hydriodate Salt: lead iodide (molar ratio) is (2-2x): x:3:4, x=0.2, stir overnight, obtain precursor solution; Adopt the method of solution spin coating, take the precursor solution of 70 ℃ in 70 Spin-coat the PEDOT:PSS layer on the surface of the ITO glass substrate at ℃, and anneal at 100℃ for 15 minutes to obtain a two-dimensional hybrid perovskite thick film material with a thickness of more than 500nm. The cross-sectio...

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Abstract

The invention discloses an inverse thick-film two-dimensional hybrid perovskite solar cell insensitive to film thickness and a preparation method thereof, belonging to the field of organic-inorganic hybrid perovskite materials. The solar cell uses a two-dimensional hybrid perovskite thick film material as the light absorption layer, and its thickness range is 500-800nm, which is helpful for fully absorbing sunlight; the thick film material can be obtained from the addition of guanidine hydroiodide It is obtained by depositing in the precursor solution of the above, and is composed of large crystal grains grown along the thickness direction. The inverse structure solar cell prepared with this thick film material as the light absorbing layer has a high cell efficiency in the range of 500-800nm ​​film thickness. The fluctuation range is less than 5%. This is of great value for the large-area solution method preparation of high-performance hybrid perovskite solar cells.

Description

technical field [0001] The invention belongs to the field of organic-inorganic hybrid perovskite materials, and in particular relates to an inverse thick-film two-dimensional hybrid perovskite solar cell with insensitive film thickness and a preparation method thereof. [0002] technical background [0003] With the continuous improvement of the efficiency of 3D organic-inorganic hybrid perovskite solar cells, their stability has also received more and more attention. Two-dimensional perovskite materials have better moisture resistance than three-dimensional perovskite, but solar cells based on two-dimensional perovskite are less efficient than three-dimensional perovskite solar cells. [0004] Improving the carrier transport ability of two-dimensional perovskite thin film materials and improving its ability to absorb sunlight are conducive to obtaining high-efficiency two-dimensional perovskite solar cells. In terms of improving the carrier transport ability of two-dimensio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/42H01L51/46H01L51/48H10K99/00
CPCH10K71/12H10K71/40H10K85/60H10K30/10H10K30/20H10K30/50H10K85/50H10K30/82H10K85/6565
Inventor 吴刚连小梅陈杰焕陈红征
Owner ZHEJIANG UNIV