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Flexible perovskite solar cell and preparation method thereof

A perovskite and insulating technology, which is applied in the field of flexible perovskite solar cells and its preparation, can solve the problems of flexible perovskite solar cells that are difficult to repeatedly bend, difficult to control the light-absorbing layer, and easily damaged by force. Achieve large-scale production, improve stability and service life, and achieve high flexibility

Inactive Publication Date: 2016-12-07
PEKING UNIV
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  • Application Information

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Problems solved by technology

However, it is difficult to control the position of the light-absorbing layer relative to the neutral plane of the device in the actual process, resulting in that the film will inevitably bear a certain stress when the battery is bent.
Since the perovskite film is a polycrystalline structure, it is easy to be damaged by force, so it is still difficult for flexible perovskite solar cells to achieve long-term high-frequency repeated bending

Method used

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  • Flexible perovskite solar cell and preparation method thereof
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  • Flexible perovskite solar cell and preparation method thereof

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Embodiment 1

[0057] Embodiment 1, preparation flexible perovskite solar cell:

[0058] according to figure 2 The shown process flow diagram for the fabrication of flexible perovskite solar cells with organic polymers:

[0059] 1) Deposit a 20nm thick titanium oxide film on the surface of the PEN-ITO conductive film by magnetron sputtering or atomic layer deposition. Magnetron sputtering can be deposited with a current of 0.2A for 20s; atomic layer deposition is deposited 500 times;

[0060] 2) Change CH 3 NH 3 I and PbCl 2 Dissolve N,N-dimethylformamide (DMF) to obtain a mixed solution, so that the molar concentrations of the two in the mixed solution are 3mol / L and 1mol / L respectively, and then add 20mg of polyethylene glycol to each milliliter of the mixed solution. Glycol (molecular weight 20000Da), make its molar concentration 0.001mol / L, stir evenly. The prepared perovskite precursor solution containing polyethylene glycol was coated with dense TiO at 4000r / min 2 Spin-coat the ...

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Abstract

The invention relates to a flexible perovskite solar cell and a preparation method thereof. The method comprises the following steps: 1) a TiO2 thin film is deposited on the surface of a flexible conductive substrate; 2) a perovskite precursor solution containing organic polymers coats the TiO2 thin film, annealing treatment is carried out, and a perovskite thin film is obtained; 3) a hole transport material is dissolved in an organic solvent to obtain a hole conductive solution; and 4) the hole conductive solution coats the perovskite thin film to form a hole transport layer, a counter electrode material is deposited on the hole transport layer, a counter electrode material layer is formed, and thus, the flexible perovskite solar cell is obtained. The preparation method is simple; the uniformity of the perovskite thin film is ensured through adding the organic polymers; when the thin film is exposed in humid air, reaction and decomposition do not happen, a self-repairing capability is provided, and the stability and the repeatability are high; and when the cell is bent, the stress caused by bending of the flexible cell can be borne due to the organic polymer supporting frame, and the battery performance does not fall.

Description

technical field [0001] The invention belongs to the field of perovskite solar cells, and in particular relates to a flexible perovskite solar cell and a preparation method thereof. Background technique [0002] Currently, perovskite solar cells are an important topic in the field of solar cell research. Perovskite solar cells have the advantages of high conversion efficiency, simple manufacturing process, and low manufacturing cost, and have high commercial value. Perovskite solar cells are formed by sequentially depositing different materials on a transparent conductive substrate. The main light-absorbing material is organic-inorganic hybrid perovskite, and its chemical composition is MAX 3 , M stands for CH 3 NH 3+ 、CH 3 (NH 2 ) 2+ and other organic groups or Cs + and other inorganic ions, A represents Pb 2+ , Sn 2+ and other metal ions, X represents Cl - 、Br - , I - and other halide ions. The highest conversion efficiency of perovskite solar cells reported in...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCY02E10/549
Inventor 赵清俞大鹏赵怡程魏静李恒严引
Owner PEKING UNIV
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