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Preparation of perovskite solar cells based on room temperature molten salt of methylamine acetate as a green solvent and its method and application

A technology of solar cells and methylamine acetate, which is applied in the field of optoelectronic materials, can solve the problems of increasing the preparation cost and not being easy to control the crystallization process, and achieves the effects of low cost, reduced toxicity, and simple operation

Active Publication Date: 2019-12-27
NANJING TECH UNIV
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Problems solved by technology

This greatly increases the cost of preparation, and it is not easy to control the crystallization process

Method used

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  • Preparation of perovskite solar cells based on room temperature molten salt of methylamine acetate as a green solvent and its method and application
  • Preparation of perovskite solar cells based on room temperature molten salt of methylamine acetate as a green solvent and its method and application
  • Preparation of perovskite solar cells based on room temperature molten salt of methylamine acetate as a green solvent and its method and application

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Embodiment

[0044] In this example, an inverted planar heterojunction perovskite solar cell is prepared using methylamine acetate as a solvent of the present invention, so as to fully understand the present invention. It mainly includes the following steps:

[0045] Step 1) Take 90ml of methylamine and place it in an ice-water bath in a round-bottomed flask, and slowly add 27.6ml of glacial acetic acid dropwise therein. After 2 hours in the ice-water bath, spin-evaporate at 55°C until there is no droplet, and prepare methylamine acetate for use.

[0046] Step 2) Clean the cut ITO conductive glass, the sequence is ethanol, ultrapure water, cleaning agent, ultrapure water, and ethanol, respectively, sonicating for 10 minutes. And blow dry with nitrogen to obtain a clean conductive glass substrate.

[0047] Step 3) Weigh 261.6mg of lead iodide and 38.31mg of methylamine chloride, dissolve them in 1ml of the methylamine acetate solvent prepared in step 1), stir at 60°C for 2 hours until comp...

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Abstract

The invention relates to a method and application for preparing a perovskite solar cell based on methylamine acetate room temperature molten salt as a green solvent, and belongs to the field of optoelectronic materials and devices. In this invention, acetic acid and methylamine are stirred in an ice-water bath according to a stoichiometric ratio of 1:1.5 for 2 hours, and then rotary evaporated on a rotary evaporator until there is no liquid drop to prepare methylamine acetate room temperature molten salt. Then lead iodide and methyl chloride were dissolved in the methylamine acetate solution according to the stoichiometric ratio of 1:1 to prepare the perovskite precursor solution, and the precursor solution was spin-coated on the existing space by using hot spin coating technology. On the ITO conductive substrate of the hole transport layer or the electron transport layer, a dense, uniform and highly stable perovskite film is formed after annealing, and the whole process is completely operated in the air. Then an electron transport layer or a hole transport layer is spin-coated on the thin film, and a modification layer and a metal Al electrode are evaporated by vacuum evaporation technology.

Description

technical field [0001] The present invention relates to a kind of methylamine acetate room temperature molten salt green solvent for preparing perovskite solar cell and its method and application, especially a kind of green solvent which can make perovskite solar cell be prepared in the air, which belongs to the field of optoelectronic material and technology . Background technique [0002] With the continuous development of society, people pay more and more attention to the energy crisis and the environmental problems caused by traditional fossil energy, and it is imminent to expand environmentally friendly and renewable energy. As a renewable and clean resource, solar energy has attracted people's attention, and the development of solar cells is one of the important ways to utilize solar energy. At present, silicon-based solar cells are mainly widely used, but the manufacturing cost of silicon-based solar cells is relatively high, and the energy consumption is relatively ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCH10K71/12H10K85/341H10K30/15Y02E10/549
Inventor 陈永华晁凌锋夏英东黄维
Owner NANJING TECH UNIV
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