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Perovskite solar cell and manufacturing method of perovskite solar cell

A solar cell and perovskite technology, applied in the field of solar cells, can solve the problems of reducing the photoelectric conversion efficiency of the cell, the instability of the perovskite solar cell, limiting the practical application of the cell, etc., so as to improve the cell efficiency, improve the stability, reduce the The effect of internal compounding

Active Publication Date: 2015-04-29
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] 1) The electronic recombination at the interface of perovskite solar cells is serious, which reduces the photoelectric conversion efficiency of the cells;
[0010] 2) Perovskite solar cells are extremely unstable in humid environments, which limits the practical application of such cells

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1, prepares silane coupling agent (C 12 h 25 Si(OCH 3 ) 3 ) in isopropanol solution, the concentration of which is 0.05M, is used to modify the surface of the perovskite material.

[0033] First, a layer of dense titanium dioxide film (100 nanometers) is cast on the conductive glass by using the sol-gel method; after treatment at 450 ° C, a layer of porous titanium dioxide layer is coated on the dense layer of titanium dioxide with a thickness of 500 nanometers, and it is sintered for later use.

[0034] Use CH 3 NH 3 I and PbCl 2 Dissolve in N,N-dimethylformamide (DMF) at a molar ratio of 3:1, and deposit the above solution on a porous titanium dioxide membrane using a homogenizer. By precisely controlling the temperature and baking at 100°C for 1 hour, the crystallization becomes CH 3 NH 3 PB 3 polycrystalline film.

[0035] Silane coupling agent (C 12 h 25 Si(OCH 3 ) 3 ) was dissolved in isopropanol at a concentration of 0.05M. CH 3 NH 3 P...

Embodiment 2

[0040] Embodiment 2, prepare silane coupling agent (C 12 h 25 Si(OCH 3 ) 3 ) in isopropanol, the concentration of which is 0.1M, is used to modify the surface of the perovskite material.

[0041] First, a layer of dense titanium dioxide film (50 nanometers) is cast on the conductive glass by using the sol-gel method; after treatment at 450°C, a layer of porous titanium dioxide layer is coated on the dense layer of titanium dioxide with a thickness of 350 nanometers, and it is sintered for later use.

[0042] Use CH 3 NH 3 I and PbCl 2 Dissolve in DMF at a molar ratio of 3:1, and deposit the above solution on porous TiO using a homogenizer 2 film. By precisely controlling the temperature and baking at 100 degrees for one hour, the crystallization becomes CH 3 NH 3 PB 3 polycrystalline film.

[0043] Silane coupling agent (C 12 h 25 Si(OCH 3 ) 3 ) was dissolved in isopropanol at a concentration of 0.1M. CH 3 NH 3 PB 3 / TiO 2 The film was soaked in the above s...

Embodiment 3

[0049] Embodiment 3, prepare silane coupling agent (C 12 h 25 Si(OCH 3 ) 3 ) in isopropanol solution with a concentration of 0.2M for modifying the surface of the perovskite material.

[0050] First, a layer of dense titanium dioxide film (100 nanometers) is cast on the conductive glass by using the sol-gel method; after treatment at 450°C, a layer of porous titanium dioxide layer with a thickness of 500 nanometers is coated on the dense layer of titanium dioxide, and it is sintered for later use.

[0051] Use CH 3 NH 3 I and PbCl 2 Dissolve in DMF at a molar ratio of 3:1, and deposit the above solution on porous TiO using a homogenizer 2 film. By precisely controlling the temperature and baking at 100 degrees for one hour, the crystallization becomes CH 3 NH 3 PB 3 polycrystalline film.

[0052] Silane coupling agent (C 12 h 25 Si(OCH 3 ) 3 ) was dissolved in isopropanol at a concentration of 0.2M. CH 3 NH 3 PB 3 / TiO 2 The film was soaked in the above sol...

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Abstract

The invention discloses a perovskite solar cell. The perovskite solar cell is characterized by sequentially comprising a conductive glass layer, a compact titanium dioxide film, a porous titanium dioxide film, a methylamine lead iodine polycrystalline film, a hole-transport material layer and an evaporation silver electrode layer. Interface modification is carried out on the methylamine lead iodine polycrystalline film through long-chain alkyl silane coupling agents, and the number of carbon atoms of the long-chain alkyl silane coupling agents is larger than six and smaller than sixteen. The invention further discloses a manufacturing method of the perovskite solar cell. Compared with the prior art, the perovskite solar cell and the manufacturing method have the advantages that as interface modification is carried out through the long-chain alkyl silane coupling agents, the recombination of electrons in the cell can be suppressed, and the stability of the cell in the wet environment can be improved.

Description

technical field [0001] The invention relates to a solar cell, and the invention also relates to a preparation method of the solar cell. Background technique [0002] Perovskite solar cells have received great attention from scientific research and industry due to their low cost, good performance, and simple preparation. Perovskite materials have been used in solar cells since 2009, and the efficiency has reached nearly 20%, which is 5 times the initial cell efficiency, leaving behind new thin-film solar cells such as dye-sensitized solar cells and organic solar cells. , Perovskite solar cells are low-cost thin-film solar cells that have developed very rapidly in the past three years. [0003] The core of the perovskite solar cell structure is the perovskite crystal form (ABX 3 ) of organometallic halide light-absorbing materials. In this perovskite ABX 3 In the structure, A is methylamino (CH 3 NH 3 ), B is a metal lead atom, and X is a halogen atom such as chlorine, b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCH10K85/00H10K30/80H10K30/00Y02E10/549
Inventor 张京诸跃进王鹏黄孝坤王利敏岳国强刘金旺卢兴伟
Owner NINGBO UNIV
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