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Preparation method for dye-sensitized solar cell

A technology for solar cells and dye sensitization, applied in the field of solar cell preparation, can solve the problems of low conductivity, restricted photoelectric conversion efficiency of dye-sensitized solar cells, unfavorable separation and transmission of charge carriers, etc. The effect of shortening the soaking time and increasing the amount of dye adsorption

Active Publication Date: 2016-01-27
HUBEI UNIV
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Problems solved by technology

However, the nanocrystalline semiconductor films prepared by the above method are all disordered films, which lead to the capture and heat release of photogenerated electrons by the defect state energy level on the particle surface during the transmission process, which makes the intrinsic conductivity smaller and is not conducive to charge carrying. The separation and transport of electrons are particularly prominent when the electrode area is enlarged, which greatly restricts the improvement of photoelectric conversion efficiency of dye-sensitized solar cells.

Method used

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preparation example Construction

[0017] The invention provides a kind of preparation method of dye-sensitized solar cell, it comprises the following steps:

[0018] Step A, providing a transparent substrate material 1 with a clean surface, and depositing a dense titanium dioxide film 21 on the surface of the substrate material 1 by atomic layer deposition technology;

[0019] Step B, using molecular layer deposition technology to deposit a titanium-containing organic-inorganic composite film 22 on the dense titanium dioxide film 21 obtained in step A;

[0020] Step C, annealing the material obtained in step B at 400-600° C. for 0.5-2 hours, immersing the material obtained in the heat treatment in dye, taking it out, washing it, and drying it to obtain the photoanode 2 of the dye-sensitized solar cell.

[0021] Preferably, the soaking condition in step C is soaking in N719 absolute ethanol solution with a concentration of 0.1-5mol / L for 0.5-12h.

[0022] Preferably, step D is also included, placing the photoa...

Embodiment 1

[0042] In step A, the FTO conductive glass is cleaned with isopropanol under ultrasonic conditions, and then the cleaned FTO conductive glass is blown dry with compressed nitrogen, and a dense titanium dioxide film with a thickness of 300nm is deposited on the clean FTO conductive glass by atomic layer deposition technology. Specific steps include:

[0043] A1, put the surface-cleaned FTO conductive glass into the reaction chamber of the atomic layer deposition equipment at a temperature of 80-200 ° C, and purge it with 50 sccm high-purity nitrogen for 5 minutes;

[0044] A2, TiCl with a purity greater than 97%4 Heating to 65°C forms TiCl 4 vapor, and pulse the TiCl 4 The steam is sent into the reaction chamber, the pulse time is 0.05s, the exposure time is 8s, and then purged with high-purity nitrogen, the purge time is 15s;

[0045] A3, send deionized water into the reaction chamber in the form of pulses, the pulse time is 0.1s, the exposure time is 8s, and then purged wit...

Embodiment 2

[0056] Step A, clean the ITO conductive glass with alcohol under ultrasonic conditions, then dry the cleaned ITO conductive glass with compressed nitrogen, and deposit a dense titanium dioxide film with a thickness of 500nm on the cleaned ITO conductive glass by atomic layer deposition technology. Specific steps include:

[0057] A1, put the surface-cleaned ITO conductive glass into the reaction chamber of the atomic layer deposition equipment at a temperature of 150°C, and purge it with 100 sccm high-purity nitrogen for 30 minutes;

[0058] A2, heat titanium tetraisopropoxide with a purity greater than 97% to 65°C to form titanium tetraisopropoxide vapor, and send titanium tetraisopropoxide vapor into the reaction chamber in pulse form, the pulse time is 0.05s, and the exposure time 8s, and then purged with high-purity nitrogen, the purging time is 15s;

[0059] A3, send deionized water into the reaction chamber in the form of pulses, the pulse time is 0.2s, the exposure tim...

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Abstract

The invention discloses a preparation method for a dye-sensitized solar cell. The preparation method comprises the following steps of step A, providing a transparent substrate material with a clean surface, and depositing a titanium dioxide compact thin film on the surface of the substrate material by adopting an atomic layer depositing technology; step B, depositing a titanium-contained organic-inorganic composite film on the titanium dioxide compact thin film obtained in the step A by adopting a molecular layer depositing technology; and step C, annealing the material obtained in the step B at the temperature of 400-600 DEG C for 0.5-2 hours, soaking the material after being thermally treated in the dye, taking out and cleaning the material and drying the material to obtain a photo anode of the dye-sensitized solar cell. The dye-sensitized solar cell prepared by the preparation method of the invention is high in photoelectric converting efficiency, good in stability of the devices, simple in the preparation process equipment, mild in reaction conditions, high in production efficiency, lower in cost and energy consumption, free of pollution on the ecological environment, high in repeatability, and suitable for the large-scale application having wider industrial application prospects.

Description

technical field [0001] The invention belongs to the field of solar cell preparation, in particular to a method for preparing a dye-sensitized solar cell. Background technique [0002] With the rapid development of society, human's demand for energy is increasing day by day. However, the energy crisis and environmental pollution caused by excessive exploitation and use of fossil energy have gradually emerged, and have become the primary factors restricting the sustainable and healthy development of economy and society. factor. Therefore, the development of renewable energy is one of the effective ways to solve the above problems. As an inexhaustible, pollution-free and clean natural green energy, solar energy has become one of the most promising energy sources. At present, the most widely researched and applied solar cells are mainly silicon-based solar cells, but the cost of raw materials for silicon-based cells is high, the production process is complex, and the potential...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/20H01G9/042
CPCY02E10/542
Inventor 万丽陈凤翔王世敏董兵海胡航赵丽李静王二静
Owner HUBEI UNIV
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