Preparation method of composite light anode of titanium dioxide nanotube array with wide light intensity application scope

A technology of nanometer dioxide and nanotube array is applied in the field of preparation of nanometer tube array composite photoanode, which can solve problems such as poor photoelectric conversion performance, and achieve enhanced photoelectric cell performance, improved photovoltage value, and excellent photoelectric conversion efficiency. Effect

Inactive Publication Date: 2015-09-23
SOUTHWEST JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Anatase crystal structure TiO 2 Semiconductor materials with nanotube arrays as photoanodes for photochemical photovoltaic cells due to TiO 2 The forbidden band width is 3.2eV, which can only absorb the ultraviolet light part, and the photoelectric conversion performance is not good.

Method used

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  • Preparation method of composite light anode of titanium dioxide nanotube array with wide light intensity application scope
  • Preparation method of composite light anode of titanium dioxide nanotube array with wide light intensity application scope
  • Preparation method of composite light anode of titanium dioxide nanotube array with wide light intensity application scope

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Effect test

Embodiment 1

[0027] A method for preparing a nanotube array composite photoanode with a wide light intensity application range, the specific method is:

[0028] a. Sheet texture of titanium foil

[0029] Cut and polish the titanium foil, use coarse sandpaper to remove impurities and oxides on the surface layer, and then use fine sandpaper to smooth it. After grinding, because there are impurities left in the grinding, it must be washed with clean water to remove surface impurities, and then washed with ethanol to remove residual lipids generated by surface contact, and then washed again with a mixed solution of ethanol, deionized water and acetone, and finally Dry by cold air.

[0030] b. Synthesis of titania nanotube arrays

[0031] The anode of the oxidation reaction is a titanium foil, and the cathode is a platinum sheet. There is a fixed value of 3cm between them, and the installed cathode and anode are placed in 0.25wt% NH 4 In the ethylene glycol solution of F, add 60V DC and it i...

Embodiment 2 4

[0042] Change the operating range of photochemical solar cells to 50mW / cm respectively 2 , 25mW / cm 2 , 5mW / cm 2 , to test whether the battery can continue to be effective. As can be seen from the table below, with N719 / In 2 S 3 / Photochemical solar cells based on titanium dioxide nanotube arrays / Ti substrates as composite photoanodes in the light intensity range of 25-100mW / cm 2 Both can show high conversion efficiency, which shows that this kind of solar cell has strong adaptability to the environment, and can be applied to areas with strong or weak light.

[0043] Table 1

[0044]

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Abstract

The invention discloses a preparation method of a composite light anode of a titanium dioxide nanotube array with a wide light intensity application scope. The method comprises the step of allowing titanium foil after anode oxidation to be subjected to sensitization of an inorganic semiconductor In2S3 and sensitization treatment of a dye sensitizer N719 to obtain the composite light anode of N719 / In2S3 / the titanium dioxide nanotube array / a Ti substrate. The photoelectric property of the light anode of the inorganic semiconductor co-sensitization titanium dioxide nanotube array prepared by the method is greatly improved. The method is rich in used material, low in condition requirement and simple in equipment; and the obtained product is stable and can be permanently stored at a room temperature.

Description

technical field [0001] The invention relates to a method for preparing a composite photoanode of a nanotube array with a wide range of light intensity. Background technique [0002] TiO synthesized by electrochemical anodic oxidation method 2 Nanotube array semiconductor materials have the following advantages: high surface order, large specific surface area and easy adsorption. Anatase crystal structure TiO 2 Semiconductor materials with nanotube arrays as photoanodes for photochemical photovoltaic cells due to TiO 2 The forbidden band width is 3.2eV, which can only absorb the ultraviolet light part, and the photoelectric conversion performance is not good. [0003] Traditional silicon and other compound solar cells are suitable for high light intensity areas, while dye and polymer solar cells are more suitable for low light intensity areas. Therefore, the development of a solar cell with a wide range of light intensity is of great significance to the research of solar ...

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 杨峰邹龙生赵勇
Owner SOUTHWEST JIAOTONG UNIV
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