A solid electrolyte for dye-sensitized solar cells based on ionic crystals

Abstract

The invention relates to solid electrolyte for a dye sensitization solar battery based on ion crystal. The solid electrolyte comprises the following components by weight percent: 70 to 90 percent of ion crystal, 5 to 15 percent of elemental iodine and 5 to 15 percent of additives, wherein the chemical structural formula of the ion crystal is as follows, s is an integer of 1 to 12, and q is an integer of 0 to 5. The electrolyte is solid, so that the leakage problem in the application process can be effectively overcome, and the high stability of the dye sensitization solar battery can be maintained; and meanwhile, cyan biphenylyl groups are introduced in the ion crystal, so that the light scattering phenomenon can be increased, and high battery performance and photoelectric conversion efficiency can be maintained.

Description

technical field [0001] The invention belongs to the field of dye-sensitized solar cells, and in particular relates to a solid electrolyte based on ion crystals. Background technique [0002] As the core component of dye-sensitized solar cells, the electrolyte mainly plays the role of transporting redox pairs, and its performance directly affects the efficiency of solar cells. [0003] Common electrolytes for dye-sensitized solar cells are liquid, quasi-solid, and solid. Among them, liquid electrolytes mostly contain organic solvents such as acetonitrile and methoxypropionitrile, which have the disadvantages of easy leakage, volatility, difficult packaging, high toxicity, and poor stability; quasi-solid electrolytes contain a small amount of ethylene carbonate, propylene carbonate, Solvents such as ionic liquids also have the problems of easy leakage and difficult packaging. Long-term use has leakage problems, which will cause a decline in battery stability. This has a decis...

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a solid electrolyte for dye-sensitized solar cells based on ionic crystals, which overcomes the problems of leakage and poor stability of common electrolytes, and improves the photoelectric conversion efficiency of the battery

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