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Method for preparing perovskite active layer of perovskite solar battery in the air

A solar cell and perovskite technology, applied in climate sustainability, circuits, photovoltaic power generation, etc., can solve problems such as hindering large-scale and industrialized production, and achieve the effects of improving photoelectric conversion efficiency, improving surface defects, and improving purity.

Inactive Publication Date: 2017-12-05
CENT SOUTH UNIV
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since perovskite materials are particularly unstable to water, the preparation of high-quality perovskite films requires strict control of humidity. The laboratory is generally prepared in an inert environment filled with nitrogen or argon. This harsh condition Seriously hindered its large-scale, industrialized production process

Method used

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  • Method for preparing perovskite active layer of perovskite solar battery in the air
  • Method for preparing perovskite active layer of perovskite solar battery in the air
  • Method for preparing perovskite active layer of perovskite solar battery in the air

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Such as figure 1 As shown, the perovskite solar cell device structure includes: FTO conductive glass glass substrate, titanium dioxide dense layer, titanium dioxide mesoporous layer, perovskite active layer, hole transport layer, and metal cathode.

[0028] In this example, the selected additive 3,5-lutidine is added in an amount of 100 μL per 1 mL of lead iodide solution.

[0029] In this example, the specific steps for preparing the perovskite active layer are: configure 1mol / L lead iodide solution, the solvent is N,N-dimethylformamide, add 100μL 3,5-dimethylformamide to 1mL lead iodide solution Pyridine, lead iodide and the glass substrate coated with TiO2 mesoporous layer were preheated at 70 °C, then the lead iodide solution was spin-coated on the TiO2 mesoporous layer, annealed at 70 °C, soaked in 10 mg / mL iodine In the methylamine solution, the perovskite active layer was obtained after annealing.

[0030] In this example, the hole transport layer is Spiro-OMeT...

Embodiment 2

[0034] In this example, the additive is 4-ethylpyridine, and 100 μL is added per 1 mL of lead iodide solution.

[0035] In this example, the hole transport layer is Spiro-OMeTAD and the metal electrode is silver.

[0036] In this example, the structure of the perovskite solar device, the preparation process and the thickness of each layer are consistent with Example 1.

[0037] In this example, the preparation process is carried out under two conditions of relative humidity control of 45% and 70%.

Embodiment 3

[0039] In this example, the additive is 4-tert-butylpyridine, and 100 μL is added per 1 mL of lead iodide solution.

[0040] In this example, the hole transport layer is Spiro-OMeTAD and the metal electrode is silver.

[0041] In this example, the structure of the perovskite solar device, the preparation process and the thickness of each layer are consistent with Example 1.

[0042] In this example, the preparation process is carried out under two conditions of relative humidity control of 45% and 70%.

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Abstract

The invention discloses a method for preparing a perovskite active layer of a perovskite solar battery in the air. According to the method, a proper amount of pyridine type small organic molecules are added to a lead iodide solution to be used as an additive in the preparation of the perovskite active layer by a two-step method; by adoption of the method, influence from humidity in the preparation of the perovskite active layer can be reduced; the perovskite active layer with relatively high quality still can be prepared in a high-humidity natural air condition, to obtain the high-efficiency perovskite solar battery; and therefore, preparation of the high-efficiency perovskite solar battery in the air is realized, the preparation cost can be lowered, and industrialization of the perovskite solar battery can be facilitated.

Description

technical field [0001] The invention relates to a method for preparing a perovskite solar cell in air, in particular to a method for preparing a perovskite active layer of a perovskite solar cell in air, and belongs to the technical field of perovskite solar cells. Background technique [0002] With the continuous development of the economy, the depletion of fossil energy, and the continuous deterioration of the ecological environment, finding clean new energy has become the most important research topic in all countries in the world. As the clean renewable energy with the most abundant reserves and the widest geographical range on the earth, solar energy has attracted widespread attention. Among them, silicon-based solar cells and other devices, which are currently the most widely used on the market, have high utilization costs due to their demanding raw materials and manufacturing processes. No less, looking for low-cost solar cell materials and technologies has become a r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/48
CPCH10K71/12Y02E10/549Y02P70/50
Inventor 潘春跃丁文辉徐保民
Owner CENT SOUTH UNIV
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