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Titanium dioxide photoelectrode and preparation method thereof

A technology of titanium dioxide and photoelectrode, which is applied in the field of solar photoelectric conversion, can solve the problems of large influence of light absorption, inability to adsorb dyes, small specific surface area, etc., and achieve good repeatability, increase transmission speed, and large specific surface area.

Inactive Publication Date: 2012-10-31
PEKING UNIV
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  • Application Information

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Problems solved by technology

However, the titanium dioxide nanorod / wire array has a much smaller specific surface area than the titanium dioxide nanoparticle film, which makes it unable to absorb a sufficient amount of dye, which has a great impact on light absorption.

Method used

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  • Titanium dioxide photoelectrode and preparation method thereof
  • Titanium dioxide photoelectrode and preparation method thereof
  • Titanium dioxide photoelectrode and preparation method thereof

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Embodiment Construction

[0020] The present invention will be described in detail through examples below in conjunction with the accompanying drawings, but the scope of the present invention is not limited in any way.

[0021] The invention prepares a novel high-efficiency nano-composite structure titanium dioxide photoelectrode through a simple liquid phase method, the process is simple, and the photoelectric conversion performance of the structure is significantly improved.

[0022] TiO was first prepared 2 For nanorod / wire array, methods such as hydrothermal method and template method can be used. Taking the hydrothermal method as an example, the specific preparation process is: put a mixture of hydrochloric acid, deionized water and tetrabutyl titanate (volume ratio 60:60:1) and conductive glass into an autoclave and heat it to 150°C , after 12 hours, the surface of the conductive glass has a neatly arranged array of titanium oxide nanowires, as shown in the reference figure.

[0023] After the ...

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Abstract

The invention provides a titanium dioxide photoelectrode and a preparation method thereof, and belongs to the solar photovoltaic conversion field. The titanium dioxide photoelectrode comprises an electroconductive substrate and a titanium dioxide nanorod (or nanowire) array arranged on the electroconductive substrate; and the titanium dioxide nanorod array is filled with titanium dioxide nanoparticles. According to the invention, a secondary structure of the titanium dioxide nanoparticles is constructed by adopting a simple liquid phase method on the basis of the titanium dioxide nanorod array; a membrane in a titanium dioxide nanorod-nanoparticle composite structure is formed; the prepared photoelectrode has the advantages that the specific surface area is large, and the electronic transmission performance is high; the adsorption of the electrode to a sensitizer is improved; and the transmission speed of an electron in the titanium dioxide electrode is increased, so that the photovoltaic conversion efficiency of a titanium dioxide dye (or quantum dot) sensitized solar battery is increased.

Description

technical field [0001] The invention belongs to the field of photoelectric conversion of solar energy, and specifically relates to a novel high-efficiency nano-composite structure titanium dioxide film and a preparation method thereof, and a photoelectrode using the compound structure film. Background technique [0002] The use of titanium dioxide as a photoelectrode is a field that has been studied more and has a good application prospect. Titanium dioxide has quickly become a research hotspot due to its cheap, stable and high-efficiency advantages. Studies have shown that titanium dioxide nanorod / wire array structure films have good electron transport channels and electron collection efficiency due to their regular arrangement. However, the titanium dioxide nanorod / wire array has a much smaller specific surface area than the titanium dioxide nanoparticle film, which makes it unable to absorb a sufficient amount of dye, which has a great impact on light absorption. If the...

Claims

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Application Information

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IPC IPC(8): H01G9/042H01G9/20H01M14/00H01L51/44H01L51/48
CPCY02E10/549
Inventor 孙文涛彭练矛艾果
Owner PEKING UNIV
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