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Perovskite solar cell based on mesoporous conductive layer substrate and its preparation method

A technology for solar cells and mesoporous conduction, which is used in the manufacture of semiconductor/solid-state devices, nanotechnology for materials and surface science, circuits, etc. problem, to achieve the effect of improving short-circuit current, easy transmission, and more transmission

Active Publication Date: 2020-02-18
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The traditional mesoporous layer materials are mainly oxide semiconductor nanoparticles, such as titanium oxide, zinc oxide, etc.; however, due to the inherent disadvantages of these oxides, such as low carrier concentration and low mobility, the devices made suffer from short circuits. Trouble with low current and large hysteresis
It has been reported that the above-mentioned defects can be improved by doping and modifying these oxides, but they have not fundamentally solved the problem.

Method used

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  • Perovskite solar cell based on mesoporous conductive layer substrate and its preparation method
  • Perovskite solar cell based on mesoporous conductive layer substrate and its preparation method
  • Perovskite solar cell based on mesoporous conductive layer substrate and its preparation method

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preparation example Construction

[0031] A method for preparing a perovskite solar cell based on a mesoporous conductive layer substrate, specifically comprising the following steps:

[0032] Step 1, cleaning of the conductive glass; ultrasonically clean the conductive glass in acetone, alcohol and deionized water in turn, and dry it for later use;

[0033] Step 2, using stannous chloride as a tin source, polyethylene glycol as a pore-forming agent, and ethylene glycol methyl ether as a solvent to prepare a seed layer precursor solution; the specific process is: add stannous chloride and polyethylene glycol In ethylene glycol methyl ether solvent, stir until clear and transparent solution, obtain seed layer precursor solution; Wherein, the mass concentration of stannous chloride in the seed layer precursor solution is 0.04~0.06g / mL, the mass concentration of polyethylene glycol is 0.02~0.03g / mL;

[0034] Step 3. Add the seed layer precursor solution obtained in step 2 dropwise onto the cleaned conductive glas...

Embodiment 1

[0039]A method for preparing a perovskite solar cell based on a mesoporous conductive layer substrate, specifically comprising the following steps:

[0040] Step 1, cleaning of the conductive glass; ultrasonically clean the FTO conductive glass in acetone, alcohol and deionized water for 20 minutes respectively, and dry in a vacuum drying oven for use;

[0041] Step 2. Add 0.564g of stannous chloride and 0.25g of polyethylene glycol (molecular weight 6000) into 10mL of ethylene glycol methyl ether solvent in sequence, and stir until a clear and transparent solution is obtained to obtain the seed layer precursor;

[0042] Step 3. Add the seed layer precursor solution obtained in step 2 dropwise onto the cleaned FTO conductive glass in step 1, and spin-coat at a speed of 3000rpm for 30s. After the spin-coating is completed, anneal at 550°C for 120min in an air atmosphere to form a seed layer; among them, the dropping amount of seed layer precursor is 16.6μL / cm 2 ;

[0043] Ste...

Embodiment 2

[0047] The mesoporous conductive layer was prepared according to the steps of Example 1, and the time of the hydrothermal reaction in step 5 was set as: 0h, 6h, 12h, 18h, and the rest of the steps remained unchanged. The cross-sectional SEM and properties of the prepared mesoporous conductive layer are as follows: Figure 6 shown.

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Abstract

A perovskite solar cell based on a mesoporous conductive layer substrate and a preparation method thereof belong to the technical field of solar cell preparation. The perovskite solar cell comprises conductive glass, a mesoporous conductive layer, an electron transport layer, a perovskite light-absorbing layer, a hole transport layer and a metal electrode layer formed sequentially on the conductive glass, and the mesoporous conductive layer is Conductive oxide (TCO) nanomaterials form nanoparticle or nanorod structures. In the present invention, a layer of nano TCO mesoporous conductive layer is formed on the conductive glass substrate, so that the conductive glass substrate itself has the effect of high specific surface area and increased optical path, thereby effectively improving the performance of the perovskite solar cell.

Description

technical field [0001] The invention belongs to the technical field of solar cell preparation, and in particular relates to a perovskite solar cell based on a mesoporous conductive layer substrate and a preparation method thereof. Background technique [0002] Since the discovery of the photovoltaic phenomenon by physicist Alexandre-Edmund Becquerel in 1839 and the successful preparation of the world's first gold-semijunction cell with an efficiency of 1% in 1883, solar cells have entered the field of vision of researchers. Today, with the development of science and technology, the demand and consumption of human energy are increasing day by day, while the traditional fossil energy is becoming increasingly exhausted. At the same time, the environmental problems brought about by fossil energy cannot be ignored. Energy demand and environmental protection requirements determine that new renewable clean energy will become the main energy source in the future; therefore, research...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/42H01L51/46H01L51/48B82Y30/00
CPCB82Y30/00H10K71/00H10K85/30H10K77/10H10K30/00H10K2102/00Y02E10/549Y02P70/50
Inventor 熊杰孙浩轩杜新川晏超贻邬春阳戴丽萍
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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