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Perovskite solar cell prepared based on acetic acid-methylamine room-temperature molten salt as green solvent and method and application of perovskite solar cell

A technology of solar cells and methylamine acetate, which is applied in the field of optoelectronic materials, can solve the problems of difficult control of the crystallization process and increase of production costs, and achieve the effects of low cost, reduced toxicity, and simple operation

Active Publication Date: 2018-10-16
NANJING UNIV OF TECH
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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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  • Perovskite solar cell prepared based on acetic acid-methylamine room-temperature molten salt as green solvent and method and application of perovskite solar cell
  • Perovskite solar cell prepared based on acetic acid-methylamine room-temperature molten salt as green solvent and method and application of perovskite solar cell
  • Perovskite solar cell prepared based on acetic acid-methylamine room-temperature molten salt as green solvent and method and application of perovskite solar cell

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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 perovskite solar cell prepared based on an acetic acid-methylamine room-temperature molten salt as a green solvent and a method and application of the perovskite solar celland belongs to the field of photoelectronic materials and devices. The method comprises the steps of stirring acetic acid and methylamine in an ice-water bath according to the stoichiometric ratio of1:1.5 for 2h and carrying out rotary evaporation on a rotary evaporator until no liquid drop drips to prepare an acetic acid-methylamine room-temperature molten salt; dissolving lead iodide and chlorine methylamine into an acetic acid-methylamine solution according to the stoichiometric ratio of 1:1 to prepare a perovskite precursor solution; carrying out spin-coating of the precursor solution onan ITO conductive substrate provided with a hole transport layer or an electron transport layer by using a thermal spin-coating technology separately and carrying out annealing to form a dense and uniform perovskite film with high stability, wherein the whole process is operated completely in the air; and then carrying out spin-coating on the electron transport layer or the hole transport layer onthe film and evaporating a modification layer and a metal Al electrode by using a 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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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 UNIV OF TECH
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