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Preparation method for uniform organic-inorganic perovskite film solar cell

A technology of solar cells and inorganic calcium, applied in the field of solar cells, can solve the problems of the influence of the photoelectric properties of thin films, residues, etc., and achieve the effects of improving repeatability, low environmental requirements, and improving coverage.

Inactive Publication Date: 2015-09-09
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method solves the film coverage problem very well, but since additives may remain in the film, it will have a certain impact on the photoelectric properties of the film

Method used

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  • Preparation method for uniform organic-inorganic perovskite film solar cell
  • Preparation method for uniform organic-inorganic perovskite film solar cell
  • Preparation method for uniform organic-inorganic perovskite film solar cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1) First, 1.48 g of potassium hydroxide (KOH) was dissolved in 65 mL of methanol to obtain solution X, and then 2.95 g of zinc acetate dihydrate was dissolved in 125 mL of methanol to obtain solution Y. Put the solution Y in a water bath at 60°C, and add all the solution X to the solution Y dropwise under constant stirring. The temperature of the water bath was raised to 65°C, and stirred at this temperature for 2.5h to obtain a sol. After the sol was cooled to room temperature and naturally precipitated, the precipitate was washed twice with methanol, and then an appropriate amount of the precipitate was dispersed into 2mL of methanol, 2mL of chloroform and 16mL of n-butanol to obtain zinc oxide with a concentration of 6mg / mL The sol is ready for use.

[0026] 2) Add 2.3g of lead iodide and 0.8g of potassium iodide ammonium to a 10ml brown screw bottle, and then add 5ml of N,N-dimethylformamide (DMF) and dimethyl sulfoxide (DMSO) to it, wherein The volume ratio of DM...

Embodiment 2

[0030] 1) First, dissolve 1.45 potassium hydroxide (KOH) in 65 mL of methanol to obtain solution X, then dissolve 2.9 g of zinc acetate dihydrate in 130 mL of methanol to obtain solution Y. Put the solution Y in a water bath at 60°C, and add all the solution X to the solution Y dropwise under constant stirring. The temperature of the water bath was raised to 65°C, and stirred at this temperature for 2.5h to obtain a sol. After the sol was cooled to room temperature and naturally precipitated, the precipitate was washed twice with methanol, and then an appropriate amount of the precipitate was dispersed into 2mL of methanol, 2mL of chloroform and 16mL of n-butanol to obtain zinc oxide with a concentration of 6mg / mL The sol is ready for use.

[0031] 2) Add 2.3g of lead iodide and 0.8g of potassium iodide ammonium to a 10ml brown screw bottle, and then add 5ml of N,N-dimethylformamide (DMF) and dimethyl sulfoxide (DMSO) to it, wherein The volume ratio of DMF and DMSO is 5:5. ...

Embodiment 3

[0035] 1) First, 1.5 g of potassium hydroxide (KOH) was dissolved in 70 mL of methanol to obtain solution X, and then 2.95 g of zinc acetate dihydrate was dissolved in 120 mL of methanol to obtain solution Y. Put the solution Y in a water bath at 60°C, and add all the solution X to the solution Y dropwise under constant stirring. The temperature of the water bath was raised to 65°C, and stirred at this temperature for 2.5h to obtain a sol. After the sol was cooled to room temperature and naturally precipitated, the precipitate was washed twice with methanol, and then an appropriate amount of the precipitate was dispersed in 2 mL of methanol, 2 mL of chloroform and 16 mL of n-butanol to obtain zinc oxide with a concentration of 5 mg / mL The sol is ready for use.

[0036] 2) Add 2.3g of lead iodide and 0.8g of potassium iodide ammonium to a 10ml brown screw bottle, and then add 5ml of N,N-dimethylformamide (DMF) and dimethyl sulfoxide (DMSO) to it, wherein The volume ratio of D...

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Abstract

The invention discloses a preparation method for a uniform organic-inorganic perovskite film solar cell, and the method comprises the steps: firstly preparing perovskite sol precursor solution in proportion; secondly preparing a perovskite film on a clean conductive glass substrate through a multi-step rotating coating method; processing the film through dropping addition of an organic solvent at the last stage of the rotating coating in order to obtain a uniform and smooth organic-inorganic perovskite film; and finally drying the film, thereby obtaining the uniform and smooth organic-inorganic perovskite film. PEDOT: PSS serves as a hole transmission layer, PCBM is used for electronic transmission, and a ZnO nano-particle film serves as a hole blocking layer, so as to prepare a cell device. The method is advantageous in that 1, a one-step liquid-phase preparation method is employed for preparing the perovskite film, and the uniform and smooth organic-inorganic perovskite film can be obtained very easily without complex equipment; 2, self-made ZnO nano-particle sol is used for forming the film, serving as the hole blocking layer, through rotating coating, thereby obtaining the high-efficiency cell device.

Description

【Technical field】 [0001] The invention relates to the technical field of solar cells, in particular to a uniform organic-inorganic perovskite thin film and a method for preparing the solar cell. 【Background technique】 [0002] Vigorously developing solar power generation technology has become an inevitable choice for human beings to deal with energy crisis and environmental pollution. The cost of power generation of silicon-based solar cells, which is currently dominant in the market, is still unable to compete with traditional fossil energy, which restricts its large-scale utilization and promotion. In recent years, organic-inorganic hybrid perovskite materials, as a new type of light-absorbing material, have made significant progress in the field of solar cells, and their photoelectric conversion efficiency has increased rapidly from 3.8% in 2009 to 9.7% in 2012. The highest efficiency reported so far has reached 19.3%, and this record is still being refreshed. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/48H01L51/42
CPCH10K30/00Y02E10/549Y02P70/50
Inventor 尹行天阙文修阙美丹
Owner XI AN JIAOTONG UNIV
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