Preparation method of porous titanium dioxide thin film for dye-sensitized solar cell

A technology of porous titanium dioxide and solar cells, applied in photosensitive equipment, photovoltaic power generation, capacitor parts and other directions, can solve the problems of restricting the industrialization development of dye-sensitized solar cells, poor compatibility and poor durability of titanium dioxide nanoparticles, etc. Photoelectric properties, good crystallization, uniform pore distribution

Active Publication Date: 2016-02-03
HUBEI HUACHENG TECH
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Problems solved by technology

Chinese patent CN200610049154.5, the disclosure date is January 18, 2006, and the name is "a method for preparing porous titanium dioxide film". The method uses isobutyl titanate as a precursor and ethylene glycol methyl ether as a solvent. Hydroxycellulose is used as an additive, and the porous titanium dioxide film is prepared by dipping and pulling by sol-gel method. The porous titanium dioxide film prepared by this method has better hydrophilicity and photocatalytic activity, and effectively prevents the agglomeration of titanium dioxide particles during hydrolysis , and by changing the dipping and pulling times, the thickness of the porous titanium dioxide film can be adjusted, but the effect on improving the photoelectric conversion efficiency is still limited.
Chinese patent CN200910096794.5, the disclosure date is March 19, 2009, titled "a double-layer nanostructure anatase titanium dioxide photoelectric thin film and its preparation method", the method uses a sol-gel method to form a titanium dioxide nanoparticle film Spin-coating on a titanium substrate covered with a porous titanium dioxide grid structure layer, the photoelectric performance of the film is improved due to the synergistic effect between the titanium dioxide nanoparticles and the network porous titanium dioxide grid structure at the interface, and the film formation is uniform , with good crystallinity and high purity, however, the poor compatibility and poor durability of titanium dioxide nanoparticles at the phase interface greatly limit the industrial development of dye-sensitized solar cells

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  • Preparation method of porous titanium dioxide thin film for dye-sensitized solar cell

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[0014] Such as figure 1 Shown, the invention provides a kind of preparation method of dye-sensitized solar cell porous titanium dioxide film, it comprises the following steps:

[0015] Step A, providing a base material 2 with a clean surface, and depositing a titanium-containing organic-inorganic composite film on the surface of the base material 2 using molecular layer deposition technology;

[0016] In step B, the material obtained in step A is heat-treated at 400-600° C. for 2-5 hours to obtain a porous titanium dioxide film 1 .

[0017] Preferably, in the step A, the base material 2 is cleaned with an organic solvent and deionized water under ultrasonic conditions, and then the cleaned base material 2 is blown dry with compressed nitrogen to obtain a surface-clean base material 2 . Specifically, the organic solvent is one of isopropanol, alcohol, chloroform or acetone.

[0018] Preferably, said step B includes,

[0019] Step A1, put the base material 2 with clean surfac...

Embodiment 1

[0031] First, clean the FTO conductive glass with isopropanol under ultrasonic conditions, and then dry the cleaned FTO conductive glass with compressed nitrogen;

[0032] Next, put the FTO conductive glass into the reaction chamber of the atomic layer deposition equipment with a temperature of 80°C, and purging it with 50 sccm high-purity nitrogen for 5 minutes;

[0033] Then, TiCl with a purity of 97% 4 Heating to 60°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;

[0034] Next, heat ethylene glycol to 100°C to form ethylene glycol vapor, and then send it into the reaction chamber in the form of pulses, the pulse time is 0.1s, the exposure time is 20s, and then purged with high-purity nitrogen, the purge time is 30s, a deposition cycle is completed, that is, a layer of titanium-containing organic-inorganic composite fi...

Embodiment 2

[0039] First, clean the ITO conductive glass with alcohol under ultrasonic conditions, and then dry the cleaned ITO conductive glass with compressed nitrogen;

[0040]Secondly, put the ITO conductive glass into the reaction chamber of the atomic layer deposition equipment with a temperature of 150°C, and purging with 100 sccm high-purity nitrogen for 30 minutes;

[0041] Then, titanium tetraisopropoxide with a purity of 97% is heated to 65°C to form titanium tetraisopropoxide vapor, and the titanium tetraisopropoxide vapor is sent into the reaction chamber in pulse form, the pulse time is 0.2s, and the exposure time is for 15s, and then purged with high-purity nitrogen for 30s;

[0042] Next, heat the glycerol to 120°C to form glycerol vapor, and then send it into the reaction chamber in a pulse form, the pulse time is 1s, the exposure time is 30s, and then purged with high-purity nitrogen, the purge time is 45s , completing a deposition cycle, that is, depositing a layer of ...

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Abstract

The invention discloses a preparation method of a porous titanium dioxide thin film for a dye-sensitized solar cell, and belongs to the field of porous material preparation. The preparation method comprises the steps of (1) providing a substrate material with the surface being clean, and depositing a titanium containing organic-inorganic composite film at the surface of the substrate material by adopting a molecular layer deposition technology; and (2) carrying out heat treatment on the prepared substrate material with the titanium containing organic-inorganic composite film being deposited at the surface for 2-5h at a temperature of 400-600 DEG C so as to acquire a porous titanium dioxide thin film. The thickness of the prepared porous titanium dioxide thin film can be controlled precisely, pore distribution is uniform, the specific surface area is large, the uniformity and crystallization are good, the impedance is small, the photo-generated current density is significantly improved, and the photoelectric performance can be greatly improved. In addition, the preparation method is simple in process equipment, small in number of operation procedures, mild in reaction condition, high in production efficiency, low in cost and energy consumption, pollution-free for the ecological environment, good in repeatability, excellent in actual use effect and suitable for large-scale application.

Description

technical field [0001] The invention belongs to the field of porous material preparation, in particular to a method for preparing a porous titanium dioxide film for dye-sensitized solar cells. Background technique [0002] The sustainable development of energy and environment is becoming two important development strategies of human society in today's world. With the advancement of science and technology and the development of human society, people's demand for energy has increased dramatically, and the development and application of new energy is imperative. As an inexhaustible clean and renewable energy, the utilization of solar energy has attracted the attention of researchers all over the world. Among them, the dye-sensitized solar cell is such a photoelectric device that effectively utilizes solar energy. It has a simple manufacturing process, low cost, stable performance, and no pollution to the environment, so it has a good development prospect. However, the photoel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/20H01G9/004
CPCY02E10/542
Inventor 董兵海陈凤翔王世敏胡航万丽赵丽李静王二静
Owner HUBEI HUACHENG TECH
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