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A kind of stable perovskite solar cell and preparation method thereof

A solar cell and perovskite technology, applied in circuits, electrical components, photovoltaic power generation, etc., can solve the problems of easy water absorption, decomposition and instability of solar cells, and achieve the effects of improving cell stability, improving crystallization, and improving cell efficiency.

Active Publication Date: 2020-01-14
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing perovskite solar cells are easy to absorb water and decompose unstable, to provide a stable perovskite solar cell and its preparation method, and the formal and trans perovskite solar cells obtained by this method The battery has good stability in air and high photoelectric conversion efficiency

Method used

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  • A kind of stable perovskite solar cell and preparation method thereof
  • A kind of stable perovskite solar cell and preparation method thereof
  • A kind of stable perovskite solar cell and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Take a piece of clean FTO conductive glass, laser-etch part of the conductive surface at the appropriate position, ultrasonically clean it with detergent, pure water, and ethanol for 10 minutes, then dry it with an air gun, and irradiate the cleaned FTO conductive glass with plasma surface 5min.

[0033] Place the conductive surface of the glass on the heating plate and heat it to 450°C within 30 minutes. When the temperature reaches 450°C, add a certain concentration of titanium isopropoxide isopropanol solution into the spray pen and spray it on the surface of the conductive glass. The whole process of spray pyrolysis takes 15 minutes. After completion, keep it warm for 10 minutes and cool it down to room temperature before taking it off.

[0034] Cut the FTO glass into a size of 1.25cm×2cm, paste it with adhesive tape, and then irradiate it with plasma surface treatment for 5 minutes. Take 100mg CH 3 NH 3 I and 289 mgPbI 2 Dissolve in 500 μl of N,N-dimethylforma...

Embodiment 2

[0040] Take a piece of clean FTO conductive glass, laser etch part of the conductive surface at a suitable position, clean it with detergent, pure water, and ethanol for 10 minutes, and then dry it with an air gun, and irradiate the cleaned FTO glass with plasma surface treatment for 5 minutes .

[0041] Place the conductive surface of the glass on the heating plate and heat it to 450°C for 30 minutes. When the temperature reaches 450°C, add a certain concentration of titanium isopropoxide and isopropanol solution into the airbrush. The whole process of spray pyrolysis takes 15 minutes, then keep it warm for 10 minutes, and then it can be removed after cooling to room temperature.

[0042] Cut the FTO glass into a size of 1.25×2cm, paste it with adhesive tape, and irradiate it with plasma surface treatment for 5 minutes. Take 100mg CH 3 NH 3 I and 289 mg PbI 2 Dissolve in 500 μl N,N-dimethylformamide (DMF), add amino silicone oil, the content is less than 5wt% of the perov...

Embodiment 3

[0048] Take a piece of clean FTO conductive glass, laser-etch part of the conductive surface at the appropriate position, ultrasonically clean it with detergent, pure water, and ethanol for 10 minutes, then dry it with an air gun, and irradiate the cleaned FTO conductive glass with plasma surface 5min.

[0049] Place the conductive surface of the glass on the heating plate and heat it to 450°C within 30 minutes. When the temperature reaches 450°C, add a certain concentration of titanium isopropoxide isopropanol solution into the spray pen and spray it on the surface of the conductive glass. The whole process of spray pyrolysis takes 15 minutes. After completion, keep it warm for 10 minutes and cool it down to room temperature before taking it off.

[0050] Cut the FTO glass into a size of 1.25cm×2cm, paste it with adhesive tape, and then irradiate it with plasma surface treatment for 5 minutes. Take 100mg CH 3 NH 3 Br, 289mg PbI 2 Dissolve in 500 μl N,N-dimethylformamide ...

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Abstract

The invention provides a stable perovskite solar cell and a preparation method thereof, which solves the problems of the existing perovskite solar cells being unstable and easily decomposed by water absorption by adding a small amount of hydrophobic polymers to the perovskite light-absorbing layer. According to different structures, the perovskite solar cells provided by the present invention are divided into two types: formal and trans, and the perovskite light-absorbing layers are all ABX 3 structure, the doped hydrophobic substance is any one of polydimethylsiloxane (silicone oil), amino silicone oil, polyethylene oxide silicone oil (PEG silicone oil), and polyethylene glycol, and the doping amount of the hydrophobic substance varies. Above 5 wt% of the perovskite solution. The invention starts from the decomposition principle of perovskite, and the performance of the prepared perovskite solar cell in air is more stable.

Description

technical field [0001] The invention relates to the technical field of perovskite solar cells, in particular to a stable perovskite solar cell and a preparation method thereof. Background technique [0002] Energy issues and environmental pollution issues are two major problems facing mankind in the 21st century, and the cleanest, fastest and most convenient way that mankind can obtain is solar energy. Solar cells based on organic-inorganic hybrid halide perovskite light-absorbing materials are called perovskite solar cells. Since perovskite solar cells were first prepared in 2009, their photoelectric conversion efficiency has increased significantly from 3.8% in just a few years. Up to 22.1% at the current stage, it is already close to the photoelectric conversion efficiency of silicon solar cells. Compared with traditional silicon solar cells, perovskite solar cells have the characteristics of simple manufacturing process, low cost, and the size can be customized arbitrar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCH10K71/12H10K85/30H10K30/151H10K30/10Y02E10/549
Inventor 向万春张帆姚希
Owner WUHAN UNIV OF TECH
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