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Preparation technology for titanium dioxide nano membrane in dye-sensitized solar cell

A technology for solar cells and dye sensitization, which is applied in the preparation process of double-layer TiO2 nano-membrane and the field of photoanode preparation of dye-sensitized solar cells, which can solve the problems of easy cracking, thin thickness and low porosity of photoanode , to achieve the effect of improving photoelectric conversion efficiency, appropriate thickness and high porosity

Active Publication Date: 2012-01-25
北京远大信达科技有限公司
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Problems solved by technology

[0008] The invention aims to solve the technical problems of easy cracking, poor uniformity, thin thickness and low porosity of the photoanode of dye-sensitized solar cells, and designs a preparation process of titanium dioxide nano-films in dye-sensitized solar cells. A dense layer of titanium dioxide and a loose porous layer are prepared sequentially. The photoanode prepared by the present invention has moderate thickness, no cracks, high porosity, can absorb more dyes, and can effectively improve the photoelectric conversion efficiency of dye-sensitized solar cells.

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  • Preparation technology for titanium dioxide nano membrane in dye-sensitized solar cell

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Embodiment Construction

[0022] A preparation process of titanium dioxide nano-film in a dye-sensitized solar cell, the key of which is: this process adopts P25 type TiO 2 Powder, and TiO with a particle size of 150-300nm 2 The powder is the base material of the slurry, and the nano-scale dense film and the loose porous film are sequentially prepared on the conductive substrate glass, and compounded to form the photoanode of the dye-sensitized solar cell. The specific steps include:

[0023] A. Preparation of dense film layer slurry: use P25 type TiO2 The powder is used as the base material, and the oil-based blending agent is added according to the mass ratio of 1: (24-32), and the particle size of TiO with a particle size of 200-300 meshes is obtained through classification grinding, magnetic stirring and ultrasonic vibration treatment. 2 Homogenize the slurry and evaporate the TiO with a rotary evaporator 2 Homogenize the volatile substances in the slurry to form the oily TiO required for the prep...

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Abstract

The invention relates to a preparation technology for a titanium dioxide nano membrane in a dye-sensitized solar cell. The preparation technology solves the technical problems that the photo-anode of the existing dye-sensitized solar cell is apt to crack, the homogeneity is poor, the thickness is slightly small and the porosity is low. The technical scheme is that the technology respectively uses P25 TiO2 powder with grain size being 17-30nm and TiO2 powder with grain size being 150-300nm as the base stock of paste, a nano dense membrane and a loose porous membrane are sequentially prepared on conducting substrate glass and the photo-anode of the dye-sensitized solar cell is formed in a compounding way. The thickness of the photo-anode prepared by adopting the technology is moderate, the photo-anode is free of cracks, the porosity is high, more dyes can be adsorbed and the photoelectric conversion efficiency of the dye-sensitized solar cell can be effectively improved.

Description

technical field [0001] The invention relates to the field of preparation of a dye-sensitized solar cell, in particular to a preparation process for a photoanode of a dye-sensitized solar cell, in particular to a double-layer TiO 2 Preparation process of nanomembrane. Background technique [0002] Resource shortage and environmental pollution are two serious problems facing mankind in the 21st century. Pollution-free, renewable green energy has become the focus of attention of all countries in the world, among which solar energy, an inexhaustible clean new energy, has become the most focused. The use of solar energy has become increasingly widespread, such as photothermal utilization, photoelectric utilization and photochemical utilization. In 1954, American scientists Chapin and Pearson made a practical monocrystalline silicon solar cell for the first time at Bell Laboratories. Since then, the practical photovoltaic power generation technology of converting solar energy in...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/04H01G9/20H01M14/00H01L51/48
CPCY02E10/542Y02E10/549
Inventor 潘珍丹王文青李鹏李兆廷
Owner 北京远大信达科技有限公司
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