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Perovskite crystal composite material, and preparation method and application thereof

A composite material, perovskite technology, applied in the field of solar cells, can solve problems such as poor moisture resistance, achieve the effects of good stability, improved thermal stability and deliquescence resistance, and extended service life

Active Publication Date: 2017-07-21
昆山协鑫光电材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Based on this, it is necessary to address the problem of poor moisture resistance of existing perovskite crystals and provide a perovskite crystal composite material with high moisture resistance

Method used

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  • Perovskite crystal composite material, and preparation method and application thereof
  • Perovskite crystal composite material, and preparation method and application thereof
  • Perovskite crystal composite material, and preparation method and application thereof

Examples

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preparation example Construction

[0047] A preparation method of a perovskite crystal composite material, comprising the steps of:

[0048] S1. The organic dopant is added to the perovskite crystal solution and mixed to form a mother liquor.

[0049] Wherein, the perovskite crystal solution refers to a solution formed by dissolving perovskite crystals in the first solvent. Preferably, the first solvent is selected from one or more of dimethylformamide, dimethyl sulfoxide, and γ-butyrolactone.

[0050] Preferably, in step S1, the molar ratio of the organic dopant to the perovskite crystal solution is 1:15˜1:3.

[0051] S2. Crystallizing the mother liquor to obtain a perovskite crystal composite material.

[0052] Preferably, the crystallization is evaporation crystallization. More preferably, the heating temperature is 90-120°C.

[0053] In a preferred embodiment, the specific operation is that the mother liquor is transferred to a crystallization dish, and then the crystallization dish is placed on an elec...

Embodiment 1

[0088] The organic dopant (tetraethylenepentamine) was added to 20mL of 1mol / L (MAPbI 3 ) / γ-butyrolactone solution to form a mother liquor.

[0089] The mother liquor was transferred to a crystallization dish, heated on a 100°C electric heating plate, evaporated and crystallized for 48 hours, and a perovskite crystal composite material was obtained, which was designated as A1.

[0090] Add the single crystal particles of the perovskite crystal composite material A1 into the solvent DMF, and ultrasonically stir until completely dissolved to obtain a perovskite composite crystal solution for later use.

[0091] The fabrication process of perovskite solar cells is as follows:

[0092] A transparent electrode (500nm thick FTO transparent electrode) was evaporated on a clean transparent substrate (2.5mm thick glass substrate).

[0093] Coat the dense layer material dispersion on the transparent electrode, and make a dense electron transport layer (50nm thick ZnO through high temp...

Embodiment 2

[0100] Example 2 is basically the same as Example 1, except that the volume ratio of 1:400 is used instead of 1:800.

[0101] The obtained perovskite solar cell is denoted as D2.

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Abstract

The invention relates to a perovskite crystal composite material. The perovskite crystal composite material comprises perovskite crystals and an organic doping agent doped in the perovskite crystals. The general chemical formula of the perovskite crystals is MA<x>FA<1-x>PbI<3-y-z>Br<y>Cl<z>; x is larger than 0 and smaller than 1, y is larger than 0 and smaller than 3, and z is larger than 0 and smaller than 3; the organic doping agent is selected from one or more of long-chain primary amine, multi-amine and hydramine; and the carbon chain of the long-chain primary amine comprises 3-16 carbon atoms. With respect to the perovskite crystal composite material, because small organic molecules are doped in the perovskite crystals, the deliquescence resistance of the perovskite crystal composite material is improved. Furthermore, the thermal stability of the perovskite crystal composite material is also improved. The invention also discloses a preparation method and an application of the perovskite crystal composite material.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a perovskite crystal composite material and a preparation method and application thereof. Background technique [0002] With the development of society, the rapid increase of population and the pursuit of higher living standards, the energy consumption per capita is getting higher and higher. The energy structure based on fossil energy such as oil, coal and natural gas cannot fully meet human needs, and Fossil energy is a non-renewable energy with limited reserves, high development costs, and environmental pollution during use. In order to better solve energy problems, people have developed a variety of new clean energy sources, such as: wind energy, tidal energy, geothermal energy, biomass energy, nuclear energy and solar energy. Among them, solar energy is the energy produced by the nuclear fusion reaction inside the sun. Although the solar radiation energy obtained by th...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/46
CPCH10K85/30H10K30/10Y02E10/549
Inventor 瞿光胤范利生巫继锋陈加坡田清勇范斌
Owner 昆山协鑫光电材料有限公司
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