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Large-area perovskite solar cell composite photoelectric conversion layer and preparation method therefor

A photoelectric conversion layer and photoelectric conversion technology, applied in the direction of circuits, photovoltaic power generation, electrical components, etc., can solve the problems of not meeting the requirements of engineering coating, poor film-forming performance of perovskite photoelectric conversion materials, etc., and achieve extended absorption Effect of wavelength range

Inactive Publication Date: 2017-05-31
TIANJIN VOCATIONAL INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there are relatively few varieties of monovalent cations in perovskite-type photoelectric conversion materials, and the film-forming performance of perovskite photoelectric conversion materials is not good, which cannot meet the engineering coating requirements of large-area perovskite solar cell photoelectric conversion layers.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Coating nano-TiO with a thickness of 20-50nm on a 100mm×100mm FTO conductive glass substrate 2 Dense layer, then coated with TiO with a particle size of 40-60nm and a thickness of 100-600nm 2 The thin film is finally sintered at 450-550° C. to form the skeleton layer of the photoelectric conversion layer. Weigh CH 3 NH 3 PB 3 Dissolve 5 g of perovskite photoelectric conversion materials in 30 g of dehydrated dimethylformamide solvent, stir for 12 hours until completely dissolved, and filter through a biscuit ceramic funnel to form a photoelectric conversion material with a concentration of 14.3% by mass Solution, use a stainless steel wire bar coater to coat the photoelectric conversion material solution on the photoelectric conversion layer skeleton, and form a methylamine iodide lead CH with a thickness of 300nm after the solvent evaporates. 3 NH 3 PB 3 Photoelectric conversion material crystalline thin film.

[0032] Add 300g of dimethylformamide, 63.7g (0.21m...

Embodiment 2

[0036] Add 300g of hexamethylphosphoric triamide, 63.7g (0.21mol) of hydroiodic acid with a mass percent concentration of 50% and 37.3g (0.1mol) of stannous iodide in a glass reactor, at 40-60°C Stir until completely dissolved, then add 13.6g (0.105mol) of cyanuric acid, continue to stir and react for 16 h, and obtain iodide stannous cyanurate C 3 N 3 h 2 o 3 SnI 4 solution; concentrated in vacuum to the solution in which crystallization is precipitated, adding absolute ethanol to make the iodide stannous cyanurate C dissolved in the polar solvent 3 N 3 h 2 o 3 SnI 4 Precipitate out, vacuum filter, absolute ethanol washing, vacuum drying to obtain refined iodide stannous cyanurate C 3 N 3 h 2 o 3 SnI 4 72.5 g of crystals were obtained, and the yield was 96%. The iodide stannous cyanurate C prepared above 3 N 3 h 2 o 3 SnI 4 Crystallization 5g, be dissolved in the hexamethylphosphoric triamide solvent of 30g through the dehydration process, finely filter with ...

Embodiment 3

[0040] Add 300g of dimethyl sulfoxide, 63.7g (0.21mol) of hydroiodic acid with a mass percent concentration of 50% and 46.1g (0.1mol) of lead iodide into a glass reactor, and stir at 40-60°C until completely Dissolve, then add 17.7g (0.10mol) of tripolythiocyanate, continue to stir and react for 24 h to obtain iodide lead tripolythiocyanate C 3 h 5 N 3 S 3 PB 4 solution; concentrated in vacuum to the solution with crystallization, adding absolute ethanol to make the iodide lead tripolythiocyanate C dissolved in the polar solvent 3 h 5 N 3 S 3 PB 4 Precipitated, vacuum filtered, washed with absolute ethanol, vacuum dried to obtain refined iodide lead tripolythiocyanate C 3 h 5 N 3 S 3 PB 4 88.5 g of crystals were obtained, and the yield was 99%. The above-prepared iodide lead thiocyanate C 3 h 5 N 3 S 3 PB 4 Crystallization 5g, be dissolved in 30g through the dimethyl sulfoxide solvent of dehydration treatment, finely filter with bisque ceramic funnel, will be...

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Abstract

The invention relates to a perovskite solar cell composite photoelectric conversion layer and a preparation method therefor. The perovskite solar cell composite photoelectric conversion layer comprises a three-dimensional perovskite type photoelectric conversion material thin film and a polymerizable two-dimensional layered perovskite type photoelectric conversion material thin film; the composition of the polymerizable two-dimensional layered perovskite type photoelectric conversion material thin film is NMX<4>, wherein N is cyanuric acid, melamine, trithiocyanuric acid, ammonium triphosphate, amino cyclotriphosphazene or a mixture thereof; M is Pb<2+>, Sn<2+>, Ge<2+>, Cu<2+>, Ni<2+>, Mn<2+>, Zn<2+>, Fe<2+> or a mixture thereof; and X is Cl<->, Br<->, I<-> or a mixture thereof. The polymerizable two-dimensional layered perovskite type photoelectric conversion material is used as the material of a perovskite solar cell composite photoelectric conversion layer and a hole transport layer at the same time, so that the large-area perovskite solar cell preparation process is simplified, and the photoelectric conversion efficiency can be stabilized and improved.

Description

technical field [0001] The invention relates to a composite photoelectric conversion layer of a perovskite solar cell containing a polymerizable group and a preparation method thereof, belonging to the field of new energy and new materials. [0002] technical background [0003] The current photoelectric conversion efficiency of perovskite solar cells has exceeded 28%, and it is expected to reach 50% in the future, becoming a new hope for the solar cell industry. Perovskite solar cells are usually composed of five parts: transparent conductive glass, dense layer, perovskite photoelectric conversion layer, hole transport layer, and metal back electrode. The thickness of the perovskite photoelectric conversion layer is generally 200-600nm, and its main function is to absorb sunlight and generate electron-hole pairs, and can efficiently transport electron-hole pairs. The typical molecular formula of perovskite photoelectric conversion materials is AMX 3 , where A represents a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCH10K71/12H10K85/30H10K30/151Y02E10/549
Inventor 李建生宋超先王璐瑶
Owner TIANJIN VOCATIONAL INST
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