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Method for preparing multilayer titanium dioxide mesoporous film electrode for solar batteries

A technology for solar cells and titanium dioxide, applied in the field of solar cells, can solve problems such as difficulty in film preparation, and achieve the effects of good repeatability, simple production process and shortened distance.

Inactive Publication Date: 2012-12-12
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If mesoporous titanium dioxide with vertical channels is used instead of random mesoporous titanium dioxide, it will be more conducive to electron transport. However, due to the difficulty in preparing mesoporous titanium dioxide films with vertical channels, such research has not been reported yet.

Method used

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  • Method for preparing multilayer titanium dioxide mesoporous film electrode for solar batteries
  • Method for preparing multilayer titanium dioxide mesoporous film electrode for solar batteries

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] This embodiment 1 is implemented under the following conditions of implementation and technical requirements:

[0025] (1) Add 1.6g of concentrated hydrochloric acid dropwise to 2.1g of tetraethyl titanate, stir for 5 minutes and mix with 0.65g of surfactant P123 in n-butanol, stir at 20°C for 3 hours to form a uniform and transparent sol- Gel Precursor.

[0026] (2) Drop the prepared sol-gel precursor solution on a clean FTO conductive glass plate, add a moving airflow that forms an angle of 45 degrees with the FTO conductive glass plane, adjust the wind speed to be 20 m / s, in the airflow Under the action of , the sol solution forms a layer of titanium dioxide film;

[0027] (3) Put the prepared titanium dioxide film into a constant temperature and humidity box at 20°C and 80% relative humidity, age it for 24 hours, and then put it into a muffle furnace for calcination at 350°C for 2 hours;

[0028] (4) Repeat the above steps to prepare a four-layer film and put it i...

Embodiment 2

[0033] This embodiment 2 is implemented under the following conditions of implementation and technical requirements:

[0034] (1) Add 1.6g of concentrated hydrochloric acid dropwise to 3.13g of n-butyl titanate, mix with 0.65g of surfactant P123 in n-butanol after stirring for 10 minutes, and stir at 20°C for 3.5 hours to form a uniform and transparent sol- Gel Precursor.

[0035] (2) drip the prepared sol-gel precursor solution on a clean FTO conductive glass plate, add a moving airflow that forms an angle of 50 degrees with the FTO conductive glass plane, and adjust the wind speed to be 18 m / s. Under the action of , the sol solution forms a layer of titanium dioxide film;

[0036] (3) Put the prepared titanium dioxide film into a constant temperature and humidity box at 20°C and 75% relative humidity, age it for 30 hours, and then put it into a muffle furnace for calcination at 350°C for 2 hours;

[0037] (4) Repeat the above steps to prepare a three-layer film and put it ...

Embodiment 3

[0042] This embodiment 3 is implemented under the following conditions of implementation and technical requirements:

[0043] (1) Add 1.6g concentrated hydrochloric acid dropwise to 2.62g tetraisopropyl titanate, mix with 0.65g n-butanol solution of surfactant P123 after stirring for 20 minutes, and stir at 20°C for 4 hours to form a uniform and transparent sol - Gel Precursor.

[0044] (2) drip the prepared sol-gel precursor solution on a clean FTO conductive glass plate, add a moving airflow that forms an angle of 40 degrees with the FTO conductive glass plane, and adjust the wind speed to be 18 m / s. Under the action of , the sol solution forms a layer of titanium dioxide film;

[0045] (3) Put the prepared titanium dioxide film into a constant temperature and humidity box at 25°C and 70% relative humidity, age it for 40 hours, and then put it into a muffle furnace for calcination at 350°C for 2 hours;

[0046] (4) Repeat the above steps to prepare two layers of films and ...

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Abstract

The invention relates to a method for preparing a multilayer titanium dioxide mesoporous film electrode for solar batteries in the technical field of solar batteries. The method comprises the following steps of: dropwise adding concentrated hydrochloric acid in an inorganic titanium source, mixing with a surfactant Pluronic P123 to obtain sol-gel precursor liquid; and then dropwise adding the sol-gel precursor liquid on a substrate, applying shearing air flow, aging and calcining to obtain a titanium dioxide mesoporous film; and performing the steps of dropwise adding and calcining repeatedlyto finally obtain a multilayer titanium dioxide mesoporous film. The regular titanium dioxide mesoporous film which is prepared by adopting the method disclosed by the invention and has approximatelyvertical ducts can improve the short-circuit current, open-circuit voltage and filling factor of a dye sensitized solar battery. The method provided by the invention is an effective method for improving the photoelectric efficiency of a dye sensitized solar battery.

Description

technical field [0001] The invention relates to a method in the technical field of solar cells, in particular to a method for preparing a multilayer titanium dioxide mesoporous film electrode for dye-sensitized solar cells. Background technique [0002] Typically, dye-sensitized solar cell electrodes are composed of titanium dioxide nanocrystalline films. However, due to the existence of a large number of interfaces between titanium dioxide nanoparticles, the distance of electron transmission is increased, and a large number of charges recombine at the titanium dioxide / electrolyte interface, which limits the improvement of photoelectric conversion efficiency. Researchers at home and abroad have tried to prepare titanium dioxide mesoporous films as electrodes. Continuous mesoporous channels can reduce the interface between titanium dioxide, inhibit electronic interface recombination, and improve photoelectric conversion efficiency, and have achieved certain results. [0003]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/44H01L51/48H01G9/04H01G9/20H01M14/00
CPCY02E10/542Y02E10/50Y02E10/549
Inventor 单锋吴俊陆学民路庆华
Owner SHANGHAI JIAOTONG UNIV
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