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Large-area perovskite solar battery light absorption multi-layer membrane and preparation method thereof

A light absorbing film and solar cell technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of unsatisfactory preparation requirements, unsatisfactory film forming performance and environmental stability of perovskite light absorbing materials, and achieve performance The effect of improving, anti-temperature aging, and improving performance

Inactive Publication Date: 2017-02-22
TIANJIN VOCATIONAL INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are relatively few varieties of monovalent cations in perovskite light-absorbing materials, and the film-forming performance and environmental stability of perovskite light-absorbing materials are not ideal, which cannot meet the requirements for the preparation of light-absorbing layers for large-area perovskite solar cells.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 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 film is finally sintered at 450-550°C to form a light-absorbing multilayer film skeleton 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 light-absorbing material with a concentration of 14.3% by mass Solution, use a wire bar coater to coat the solution on the light-absorbing layer skeleton, and form a methylamine iodide lead CH with a thickness of 400nm after the solvent evaporates. 3 NH 3 PB 3 Crystalline thin films of light-absorbing materials.

[0027] Add 300g of dimethylformamide, 63.7g (0.21mol) of hydroiodic acid with a mass percent concentration of 50% and 31.7g (0.1mol) of c...

Embodiment 2

[0031] Add 300g of dimethylformamide, 63.7g (0.21mol) of hydroiodic acid with a mass percent concentration of 50% and 31.9g (0.1mol) of zinc iodide into a glass reactor, and stir at 40-60°C until completely Dissolve, then add 12.5g (0.105mol) of benzotriazole, continue to stir and react for 16 h to obtain benzotriazole zinc iodide C 6 N 3 h 7 ZnI 4 solution; concentrated in vacuo to crystallization in the solution, adding absolute ethanol to dissolve the zinc iodide benzotriazole C in the polar solvent 6 N 3 h 7 ZnI 4 Precipitated, vacuum filtered, washed with absolute ethanol, vacuum dried to obtain refined benzotriazole zinc iodide C 6 N 3 h 7 ZnI 4 crystallization.

[0032] The iodized benzotriazole zinc C prepared above 6 N 3 h 7 ZnI 4 Crystallization 5g, be dissolved in 30g through the dimethyl formamide solvent of dehydration treatment, finely filter with bisque ceramic funnel, will be coated on the lead CH 3 NH 3 PB 3 On the light-absorbing material cry...

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Abstract

The invention relates to a perovskite solar battery light absorption multi-layer membrane which consists of a three-dimensional perovskite solar battery light absorption membrane / a two-dimensional perovskite solar battery light absorption membrane / a polyurethane complex membrane, wherein the two-dimensional perovskite solar battery light absorption membrane consists of NMX4; in the formula, N is imidazole or a triazole compound; M is Pb<2+>, Sn<2+>, Ge<2+>, Cu<2+>, Ni<2+>, Mn<2+>, Zn<2+>, Fe<2+> or a mixture of the components; X is Cl-, Br-, I- or a mixture of the components. The polyurethane complex membrane in the membrane is a hydrophobic inorganic-organic covalent compound membrane which is formed by coating the two-dimensional perovskite solar battery light absorption membrane with an isocyanate compound solution in situ, and can be used as a perovskite solar hole transport layer. By utilizing a polymerization reaction of isocyanate, residual materials can be cleared and a hole transport layer can be formed, and a preparation process of a large-size perovskite solar battery can be simplified.

Description

technical field [0001] The invention relates to a perovskite solar cell light-absorbing multilayer film composed of a three-dimensional perovskite light-absorbing film / two-dimensional perovskite light-absorbing film / polyurethane complex film and a preparation method thereof, belonging to new energy and new technologies material field. [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 light absorbing layer, hole transport layer, and metal back electrode. The thickness of the perovskite light-absorbing 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. [0004] The most commonly used p...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/48
CPCH10K30/00Y02E10/549
Inventor 李建生何涛李无为
Owner TIANJIN VOCATIONAL INST