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Bimetal complex perovskite materials, preparation method and application thereof

A composite perovskite and binary metal technology, applied in electrical components, final product manufacturing, sustainable manufacturing/processing, etc., can solve problems such as environmental pollution of solar cells

Active Publication Date: 2016-04-20
HUAZHONG UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the current environmental pollution problems of lead-halide perovskite solar cells, this application provides three low-lead content perovskite materials and preparation methods, as well as various application methods in the field of solar cells, while ensuring the photoelectric conversion efficiency of the cells , to promote the environmentally friendly development of perovskite solar cells

Method used

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  • Bimetal complex perovskite materials, preparation method and application thereof
  • Bimetal complex perovskite materials, preparation method and application thereof
  • Bimetal complex perovskite materials, preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] Embodiment 1, comprises the steps:

[0085] (1) At room temperature, the PbI 2 with MgI 2 The powder is uniformly mixed according to the ratio of the amount of substances to 9:1;

[0086] (2) Mix the mixed powder described in (1) with CH 3 NH 3 I crystals form a homogeneous mixture according to the ratio of the amount of substances in a ratio of 1:1;

[0087] (3) Dissolve the mixture described in (2) in N,N-dimethylformamide (DMF) solvent, and stir at room temperature until it is completely dissolved to obtain CH 3 NH 3 Pb 0.9 Mg 0.1 I 3 Composite perovskite solution;

[0088] (4) Take 2ml of the solution obtained in (3), spin-coat it on a glass plate, then heat and anneal at 60°C for 120 minutes and evaporate the solvent to dryness to obtain CH 3 NH 3 Pb 0.9 Mg 0.1 I 3 Composite perovskite thin film materials.

[0089]

Embodiment 2

[0090] Embodiment 2, comprises the steps:

[0091] (1) At room temperature, the PbI 2 with CaI 2 The powder is uniformly mixed according to the ratio of the amount of substances to 9:1;

[0092] (2) Mix the mixed powder described in (1) with CH 3 NH 3 I crystals form a homogeneous mixture according to the ratio of 1:2 of the amount of substances;

[0093] (3) Dissolve the mixture described in (2) in dimethyl sulfoxide (DMSO) solvent, and stir at 100°C until it is completely dissolved to obtain CH 3 NH 3 Pb 0.9 Ca 0.1 I 3 Composite perovskite solution;

[0094] (4) Take 2ml of the solution obtained in (3), spin-coat it on a glass plate, and then heat and anneal at 100°C for 60 minutes to evaporate the solvent to dryness to obtain CH 3 NH 3 Pb 0.9 Ca 0.1 I 3 Composite perovskite thin film materials.

[0095]

Embodiment 3

[0096] Embodiment 3, comprises the steps:

[0097] (1) At room temperature, the PbI 2 with BaI 2 The powder is uniformly mixed according to the ratio of the amount of substances to 9:1;

[0098] (2) Mix the mixed powder described in (1) with CH 3 NH 3 I crystals form a homogeneous mixture according to the ratio of the amount of substances at 1:3;

[0099] (3) Dissolve the mixture described in (2) in γ-butyrolactone solvent and stir at 130°C until it is completely dissolved to obtain CH 3 NH 3 Pb 0.9 Ba 0.1 I 3 Composite perovskite solution;

[0100] (4) Take 2ml of the solution obtained in (3), spin-coat it on a glass plate, then heat and anneal at 150°C for 5 minutes, and evaporate the solvent to dryness to obtain CH 3 NH 3 Pb 0.9 Ba 0.1 I 3 Composite perovskite thin film materials.

[0101]

[0102]

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Abstract

The invention discloses three bimetal complex perovskite materials AB1B2X3(X: Cl, Br or I) and a preparation method thereof, and an application of the bimetal complex perovskite materials in preparation of perovskite solar cells with multiple structures. The bimetal complex perovskite materials, the preparation method and the application thereof belong to the field of a new-material solar cell. The bimetal complex perovskite material is prepared from an organic halide AX (A: CH3NH3<+>, NH2CH=NH2<+>; X: Cl<->, Br<->, I<->), metal halides B1X2, B2X2 (B1:Pb<2+>, B2: Mg<2+>, Ca<2+>, Ba<2+>, Ba<2+>; X: Cl, Br, I), and an organic solvent (N,N-dimethyl formamide DMF, dimethyl sulfoxide DMSO or gamma-butyrrolactone solvent). Compared with existing perovskite materials ABR3 (A: CH3NH3<->, NH2CH=NH2<+>; B: Pb<2+>; X: Cl<->, Br<->, I<->), the bimetal complex perovskite materials, the preparation method and the application thereof have advantages of effectively content of organic lead ions, reducing environment pollution, and facilitating realization of industrial application of perovskite solar cells.

Description

technical field [0001] The invention belongs to the technical field of perovskite solar cells, in particular to three binary metal composite perovskite materials (Mg-Pb, Ca-Pb, Ba-Pb) and the application of the three materials in heterojunction solar cells , which effectively reduces the toxic heavy metal Pb in perovskite materials 2+ content, which reduces the harm to the environment and is conducive to the large-scale industrial application of this type of battery. Background technique [0002] With the depletion of non-renewable energy sources and the continuous increase of energy consumption, energy issues have become a major challenge to the survival and development of human society. Solar energy is an inexhaustible and non-polluting energy source, and a solar cell is an effective device that uses the photovoltaic effect to directly convert solar energy into electrical energy. The research and development of high-efficiency and low-cost new solar cells is the technica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCH10K85/00H10K30/00Y02E10/549Y02P70/50
Inventor 陈炜徐尧王欢
Owner HUAZHONG UNIV OF SCI & TECH