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High-stability perovskite solar cell and preparation method thereof

A solar cell and perovskite technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems that restrict the photoelectric conversion efficiency of perovskite cells, achieve stability improvement, suppress non-radiative recombination, and increase open circuit voltage Effect

Active Publication Date: 2020-02-28
CHANGZHOU UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As we all know, the surface morphology of perovskite, the non-radiative recombination of carriers in the interface and bulk phase seriously restrict the improvement of the photoelectric conversion efficiency of perovskite cells.

Method used

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  • High-stability perovskite solar cell and preparation method thereof
  • High-stability perovskite solar cell and preparation method thereof
  • High-stability perovskite solar cell and preparation method thereof

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preparation example Construction

[0028] The present invention also provides a method for preparing a highly stable perovskite solar cell, comprising the following steps:

[0029] (1) A conductive glass layer is provided, and a dense electron transport layer is prepared by chemical bath deposition on the conductive glass layer;

[0030] (2) Spin-coat the perovskite precursor solution prepared on the dense electron transport layer, add additives in different proportions to the perovskite precursor solution, anneal and crystallize to obtain an organic-inorganic hybrid perovskite light-absorbing layer;

[0031] (3) Depositing a hole transport material on the organic-inorganic hybrid perovskite light-absorbing layer to obtain a hole transport layer;

[0032] (4) Evaporating an electrode material on the hole transport layer to obtain an electrode layer;

[0033] The present invention also provides a perovskite solar component, including the perovskite solar cell.

[0034] Wherein, the material of the conductive g...

Embodiment 1

[0042] Such as figure 1 As shown, a highly stable perovskite solar cell, the solar cell sequentially includes a conductive glass layer, a dense electron transport layer, a perovskite light-absorbing layer, a hole transport layer and an electrode layer from bottom to top.

[0043] The preparation method of above-mentioned perovskite solar cell comprises the following steps:

[0044] (1) Preparation of dense electron transport layer: TiO was prepared by chemical bath deposition on the FTO conductive glass layer 2 Dense electron transport layer;

[0045] (2) Preparation of perovskite light-absorbing layer: spin-coat Cs at 1000rpm for 10s and 3000rpm for 40s 0.15 FA 0.85 Pb(I 0.9 Br 0.1 ) 3 Perovskite solution to electron transport layer (additive: PbCl 2 :PbI 2 =1%; DPSI:0.05mg / ml), annealed at 110°C for 20min after spin coating, and crystallized to obtain a perovskite light-absorbing layer;

[0046] (3) Prepare hole transport layer: dissolve spiro-OMETAD in chlorobenzen...

Embodiment 2

[0049] A highly stable perovskite solar cell, the solar cell comprises a conductive glass layer, a dense electron transport layer, a perovskite light-absorbing layer, a hole transport layer and an electrode layer from bottom to top

[0050] The preparation method of above-mentioned perovskite solar cell comprises the following steps:

[0051] (1) Preparation of dense electron transport layer: TiO was prepared by chemical bath deposition on the FTO conductive glass layer 2 Dense electron transport layer;

[0052] (2) Preparation of perovskite light-absorbing layer: spin-coat Cs at 1000rpm for 10s and 3000rpm for 40s 0.15 FA 0.85 Pb(I 0.9 Br 0.1 ) 3 Perovskite solution to electron transport layer (additive: PbCl 2 :PbI 2 =3%; DPSI:0.05mg / ml), annealed at 110°C for 20 minutes after spin coating, and crystallized to obtain a perovskite light-absorbing layer;

[0053] (3) Prepare hole transport layer: dissolve spiro-OMETAD in chlorobenzene solvent, add lithium salt and coba...

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Abstract

The invention belongs to the photovoltaic field, and specifically discloses a high-stability perovskite solar cell and a preparation method therefor. The solar cell sequentially comprises a conductiveglass layer, a compact electron transmission layer, a perovskite light absorption layer, a hole transmission layer and a counter electrode layer from the bottom to the top. According to the invention, DPSI (3-(decyldimethylammonium)-propanesulfonic acid inner salt) and PbCl2 are added into the light absorption layer of the perovskite cell, and under the synergistic cooperation of the two additives, a device with high open-circuit voltage is obtained. Through element regulation and control and additive defect passivation, the key problem that perovskite commercialization is hindered due to lowstability is solved, and meanwhile, the problem that the photoelectric conversion efficiency of a binary perovskite solar cell is relatively low relative to a ternary perovskite cell is also solved.

Description

technical field [0001] The invention belongs to the field of photovoltaics, and in particular relates to a highly stable perovskite solar cell and a preparation method thereof. Background technique [0002] At present, perovskite (perovskite) types are divided into: (a) organic-inorganic hybrid perovskite, (b) organic perovskite and (c) inorganic hybrid perovskite. [0003] Organic-inorganic hybrid perovskite materials due to their outstanding optoelectronic properties, such as high charge transport mobility, long carrier diffusion length, large absorption coefficient, small exciton binding rate, composition The tunability of the band gap and the processability of the solution make it the hottest photovoltaic material at present. At the same time, thanks to the continuous optimization of materials and preparation methods, the power conversion efficiency (PCE) of organic-inorganic hybrid perovskite has soared from 3.8% to 24.2% in just ten years, and its efficiency has reach...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/44H01L51/46H01L51/48
CPCH10K71/00H10K85/00H10K30/10H10K30/80H10K2102/00Y02E10/549
Inventor 丁建宁杨建超袁宁一王书博
Owner CHANGZHOU UNIV
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