Solvent system for perovskite solar cell and preparation method of perovskite solar cell

Abstract

The invention provides a solvent system for a perovskite solar cell, which is composed of one of 1, 8-diiodo octane and 1-chloronaphthalene, dimethyl sulfoxide and acetonitrile. The invention also provides a preparation method of the perovskite solar cell. The solvent system provided by the invention is applied to the preparation process of the perovskite active layer, is low in toxicity in the production process and meets the requirements of green chemistry, environmental protection and sustainable development, and the solvent system provided by the invention has equivalent battery performance compared with a conventional solvent system in the prior art.

Description

technical field [0001] The invention relates to the technical field of perovskite solar cells, in particular to a solvent system for perovskite solar cells and a preparation method for perovskite solar cells. Background technique [0002] The existing solvent systems in perovskite solar cells are generally N,N-dimethylformamide (DMF), N-methylpyrrolidone (NMP), 2-methoxyethanol (2-ME) and some other toxic Higher solvent combination; for example, DMF has reproductive toxicity; it is irritating to eyes, skin and respiratory tract; steam can cause mild and moderate irritation to eyes and upper respiratory tract; skin pollution can cause mild to severe burns, and skin irritation Wrinkles, pale complexion, accompanied by burning pain, severe cases can cause skin swelling, severe burning pain; polluted eyes can cause burning pain, tearing, conjunctival hyperemia, severe cases can cause corneal necrosis; NMP has a mild stimulating effect on the skin , chronic effects can cause dys...

AI Technical Summary

Problems solved by technology

[0002] The existing solvent systems in perovskite solar cells are generally N,N-dimethylformamide (DMF), N-methylpyrrolidone (NMP), 2-methoxyethanol (2-ME) and some other toxic Higher solvent combination; for example, DMF has reproductive toxicity; it is irritating to eyes, skin and respiratory tract; steam can cause mild and moderate irritation to eyes and upper respiratory tract; skin pollution can cause mild to severe burns, and skin irritation Wrinkles, pale complexion, accompanied by burning pain, severe cases can cause skin swelling, severe burning pain; polluted eyes can cause burning pain, tearing, conjunctival hyperemia, severe cases can cause corneal necrosis; NMP has a mild stimulating effect on the skin , chronic effects can cause dysfunction of the central nervous system, causing lesions of respiratory organs, kidneys, and vascular systems; 2-ME is reproductively toxic and can damage fertility and fetuses; a large amount of exposure or oral administration can cause acute poisoning, headache, fatigue, Unresponsiveness, drowsiness, tremor, ataxia, coma, liver and kidney damage, gastrointestinal bleeding, and even death in severe cases; neurasthenia syndrome, macrocytic anemia, leukopenia in chronic poisoning, toxic encephalopathy and brain atrophy in severe cases

[0003] At present, the preparation operation of perovskite solar cells in the laboratory stage is basically in the glove box and the amount is small, so the damage to the human body is very small, but the amount of solvent required for the large-scale production of perovskite cells will increase significantly in the later stage , so it is necessary to consider replacing low-toxic green solvents

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