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Mesoporous perovskite solar cell and preparation method thereof

A solar cell and perovskite technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of large transmission loss, low electron collection efficiency, low current, etc., to improve short-circuit current density and open-circuit voltage, reduce Interfacial resistance and the effect of carrier interfacial recombination

Inactive Publication Date: 2015-11-18
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, its electron mobility is lower than that of similar inorganic oxide semiconductors such as ZnO, which leads to electrons in TiO 2 The transmission loss inside the layer is relatively large; due to the TiO 2 Internal defects, insufficient contact with the perovskite interface and other factors lead to low electron collection efficiency, resulting in low current

Method used

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  • Mesoporous perovskite solar cell and preparation method thereof
  • Mesoporous perovskite solar cell and preparation method thereof
  • Mesoporous perovskite solar cell and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] 1) Preparation of transparent conductive substrate:

[0052] Etch the FTO conductive glass with 1:1 concentrated hydrochloric acid and zinc powder to form the required electrode pattern, and ultrasonically clean it with alkaline detergent aqueous solution for 60 minutes. Wash with deionized water, absolute ethanol, and acetone in sequence, then dry with cold dry air, and treat at a high temperature of 510°C for 20 minutes.

[0053] 2) Prepare the dense layer:

[0054] Spin-coat a 5-40 mM tetraisopropyl titanate isopropanol solution on the FTO transparent conductive glass at a speed of 3000-6000 rpm for 30 s. Then high temperature treatment at 510°C for 20 minutes to form 5-150nm TiO 2 dense layer.

[0055] 3) Preparation of perovskite light-absorbing layer:

[0056] Prepared using a two-step method, 350-500 mg of PbI 2 Dissolve in 1mL DMF (N,N-dimethylformamide), heat at 70°C for 12h to dissolve. This PbI2 solution was then spin-coated on BaSnO 3 On the skeleton ...

Embodiment 2

[0064] 1) Prepare a transparent conductive substrate. With embodiment 1.

[0065] 2) Prepare a dense layer. With embodiment 1.

[0066] 3) Prepare the skeleton layer:

[0067] Dilute commercial TiO with absolute ethanol at a mass ratio of 3:1 2 slurry, and then stirred for 12h until the diluted slurry was completely mixed evenly. The mixed slurry is spin-coated on the dense layer at a rotation speed of 2000-6000rpm for 30s. Then high temperature treatment at 510°C for 20 minutes to form 200-600nm thick TiO 2 Skeleton layer.

[0068] 4) Prepare the perovskite light-absorbing layer. With embodiment 1.

[0069] 5) Prepare the hole transport layer. With embodiment 1.

[0070] 6) Preparation of electrodes. With embodiment 1.

[0071] 7) Test:

[0072] The test conditions are spectral distribution AM1.5G, light intensity 1000W / m 2 The standard light source, the effective area of ​​the battery is 0.09cm 2 . After optimizing the parameters, the obtained photoelectric c...

Embodiment 3

[0074] 1) Prepare a transparent conductive substrate. With embodiment 1.

[0075] 2) Prepare a dense layer. With embodiment 1.

[0076] 3) Prepare the skeleton layer:

[0077] Dilute BaSnO with absolute ethanol at a mass ratio of 3:1 3 slurry, and then stirred for 12h until the diluted slurry was completely mixed evenly. The mixed slurry was spin-coated on the dense layer at a rotation speed of 3000 rpm for 30 s. Then high temperature treatment at 510°C for 20 minutes to form 200nm thick BaSnO 3 Skeleton layer.

[0078] 4) Prepare the perovskite light-absorbing layer. With embodiment 1.

[0079] 5) Prepare the hole transport layer. With embodiment 1.

[0080] 6) Preparation of electrodes. With embodiment 1.

[0081] 7) Test:

[0082] The test conditions are spectral distribution AM1.5G, light intensity 1000W / m 2 The standard light source, the effective area of ​​the battery is 0.09cm 2 . After optimizing the parameters, the obtained photoelectric conversion eff...

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Abstract

The invention discloses a mesoporous perovskite solar cell and a preparation method thereof. The mesoporous perovskite solar cell comprises a transparent conductive base, a compact layer, a skeleton layer, a perovskite layer, a hole transmission layer and a counter electrode, wherein the compact layer, the skeleton layer, the perovskite layer, the hole transmission layer and the counter electrode are sequentially stacked on the transparent conductive base; and the skeleton layer is a barium stannate film with a perovskite structure and the like, and has p-type conductivity or n-type conductivity or comprises an insulator. With a novel perovskite oxide as the skeleton layer, the mesoporous perovskite solar cell has relatively high charge collection efficiency, and is relatively good in contact with a perovskite layer interface. Compared with a traditional titanium dioxide compact layer, the photoelectric properties such as short-circuit current and filling factors can be effectively improved; leakage current caused by contact of the hollow transmission layer and an electron transmission layer is reduced; reverse recombination of photoelectrons is prevented; and the photoelectric conversion efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of perovskite thin-film solar cells, and in particular relates to a mesoporous perovskite solar cell and a preparation method thereof. Background technique [0002] With the continuous development of society, the energy problem has become one of the most important problems plaguing mankind, and it can even be said that it has reached the point of energy crisis. Traditional energy resources, such as coal and oil, are not only non-renewable, but also cause serious environmental pollution. Finding and developing new renewable energy is the primary way to solve this problem. As a representative of new energy, solar energy has been widely concerned as a hot spot in the field of scientific research. Since the invention of monocrystalline silicon solar cells in 1954, the use of solar power to solve energy problems has given people great hope. At present, the widely used solar cells mainly include silicon cells, c...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/44H01L51/46H01L51/48
CPCH10K30/80H10K30/00Y02E10/549
Inventor 戴松元潘旭朱梁正胡林华姚建曦
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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