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Preparation method for thin titanium dioxide layer of perovskite cell

A perovskite cell and titanium dioxide technology, applied in the field of solar cells, can solve the problems of low photocatalyst efficiency and narrow photoresponse range, and achieve the effect of low material price, simple manufacturing process, and wide source of raw materials

Inactive Publication Date: 2015-07-29
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to improve the shortcomings of low photocatalyst efficiency and narrow photoresponse range of titanium dioxide, prepare perovskite nanocrystals with wide and strong photoresponse range, increase light scattering and improve Capture light and improve the utilization rate of sunlight, so as to realize the construction technology of solar cells with low cost and high conversion efficiency

Method used

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  • Preparation method for thin titanium dioxide layer of perovskite cell
  • Preparation method for thin titanium dioxide layer of perovskite cell
  • Preparation method for thin titanium dioxide layer of perovskite cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Each coating preparation method:

[0030]

[0031] Preparation:

[0032] (1) Add deionized water, concentrated hydrochloric acid and tetra-n-butyl titanate into a beaker in sequence, stir until a uniform solution is obtained, and conduct a hydrothermal reaction at 180°C for 24 hours to prepare titanium dioxide colloid.

[0033] (2) PbI 2 Slowly add the solid into the DMF (N-N dimethylformamide) solution to prepare a 0.1M solution, stir evenly at 60-80°C, filter the solution and take the filtrate for storage.

[0034] (3) Change CH 3 NH 3 Add the I solid to the isopropanol solution to prepare a 10 mg / mL homogeneous solution.

[0035] (4) According to the parameters in the chart, spin-coat each coating with different thicknesses in sequence to prepare perovskite electrodes.

Embodiment 2

[0037] Each coating preparation method and thickness:

[0038]

[0039] Preparation:

[0040] (1) Add deionized water, concentrated hydrochloric acid and tetra-n-butyl titanate into a beaker in sequence, stir until a uniform solution is obtained, and conduct a hydrothermal reaction at 180°C for 24 hours to prepare titanium dioxide colloid.

[0041] (2) PbI 2 Slowly add the solid into the DMF (N-N dimethylformamide) solution to prepare a 0.1M solution, stir evenly at 60-80°C, filter the solution and take the filtrate for storage.

[0042] (3) Change CH 3 NH 3 Add the I solid to the isopropanol solution to prepare a 10 mg / mL homogeneous solution.

[0043] (4) According to the parameters in the chart, spin-coat each coating with different thicknesses in sequence to prepare perovskite electrodes.

Embodiment 3

[0045] Each coating preparation method and thickness:

[0046]

[0047] Preparation:

[0048] (1) Add deionized water, concentrated hydrochloric acid and tetra-n-butyl titanate into a beaker in sequence, stir until a uniform solution is obtained, and conduct a hydrothermal reaction at 180°C for 24 hours to prepare titanium dioxide colloid.

[0049] (2) PbI 2 Slowly add the solid into the DMF (N-N dimethylformamide) solution to prepare a 0.1M solution, stir evenly at 60-80°C, filter the solution and take the filtrate for storage.

[0050] (3) Change CH 3 NH 3 Add the I solid to the isopropanol solution to prepare a 10 mg / mL homogeneous solution.

[0051] (4) According to the parameters in the chart, spin-coat each coating with different thicknesses in sequence to prepare perovskite electrodes.

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Abstract

The invention relates to a preparation method for a thin titanium dioxide layer of a perovskite cell. The preparation method comprises the steps that tetra-n-butyl titanate serves as a titanium source, and is added to a solution according to the volume ratio of 1:10, the volume ratio of concentrated hydrochloric acid to deionized water in the solution is one to one, gradient hydrolysis is achieved, and therefore a titanium dioxide nano flower-shaped series with a multi-level structure is prepared through a hydrothermal method; colloid titanium dioxide uniformly coats a conductive glass sheet in a spin mode through a spin coating method, high-temperature calcination is conducted, and a dense titanium dioxide film coating is formed; a lead iodide solution and an ammonium methyl iodide solution coat the titanium dioxide coating in a spin mode in sequence, drying is conducted after a uniform coating is formed, and therefore a methylammonium lead iodide perovskite layer is obtained. Due to control over the thickness of the dense titanium dioxide layer, perovskite nanocrystalline which is wide in photoresponse range and high in photoresponse can be prepared, light scattering is enhanced, capture of light is improved, the utilization ratio of sunlight is increased, and therefore a construction technology of a solar cell with the low cost and high conversion efficiency is implemented.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and mainly relates to an organic-inorganic perovskite type solar cell electrode material and a preparation method thereof. Background technique [0002] Traditional chemical industry has created a large amount of material wealth, met the material needs of human beings, and greatly promoted social development and progress; at the same time, it also produced negative effects such as environmental pollution, global warming, and the depletion of fossil resources. The full use of solar energy is one of the fundamental ways to solve the problems of energy shortage and environmental pollution faced by human beings and to achieve sustainable development. [0003] Titanium dioxide, as an important new energy source and environmental protection material, is widely used in photocatalysis, solar power generation, and solar heat collection. It has excellent properties such as stable physical and chemi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/48
CPCC01G23/053H10K30/80H10K30/00Y02E10/549
Inventor 何丹农董毅林琳金彩虹
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
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