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Preparation of foliated titanium dioxide nano array thin film electrode and application of foliated titanium dioxide nano array thin film electrode in dye sensitized solar cell

A thin-film electrode and titanium dioxide technology, which is applied in the field of dye-sensitized solar cells, can solve the problems of reducing the roughness of thin-film electrodes, increasing the diameter of nanorod arrays, reducing the amount of dye adsorption, etc., achieving large electrode surface roughness, long electronic life, Effect of High Monochromatic Light Photoelectric Conversion Efficiency

Inactive Publication Date: 2012-09-19
HENAN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

TiO 2 Nanotubes and nanorod arrays have disadvantages such as relatively large diameters and complex preparation methods, which lead to a significant reduction in the roughness of the film electrode and a reduction in the amount of dye adsorption, and an increase in the light scattering rate that reduces the transmittance, limiting the method of increasing the thickness of the film. Dye adsorption

Method used

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  • Preparation of foliated titanium dioxide nano array thin film electrode and application of foliated titanium dioxide nano array thin film electrode in dye sensitized solar cell
  • Preparation of foliated titanium dioxide nano array thin film electrode and application of foliated titanium dioxide nano array thin film electrode in dye sensitized solar cell
  • Preparation of foliated titanium dioxide nano array thin film electrode and application of foliated titanium dioxide nano array thin film electrode in dye sensitized solar cell

Examples

Experimental program
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Effect test

Embodiment 1

[0037] (1) Metal titanium foil is the raw material for preparing nano-array thin-film electrodes. Take a metal titanium foil with a width of 10 mm, a length of 15 mm, and a thickness of 0.5 mm. After ultrasonic cleaning for 15 minutes in tap water with detergent, rinse with tap water for 3 times. Then put them into distilled water, ethanol and deionized water for ultrasonic cleaning for 15 minutes.

[0038] (2) Configure chemical polishing solution. The hydrofluoric acid with a concentration of 40% by weight, nitric acid with a concentration of 65% by weight, and deionized water are mixed in a volume ratio of 1.5:3:5.5 to obtain a solution for chemical polishing, for use.

[0039] (3) Chemical polishing of metal titanium foil. Take 10mL of chemical polishing solution in a 100mL beaker, put it in cleaned titanium foil, cover the petri dish, put it in a 55℃ constant temperature drying oven, heat and polish for 15min, take out the titanium foil and clean it with deionized water for ...

Embodiment 2

[0047] According to the method in Example 1, except for the changes in the following steps, the other steps are exactly the same.

[0048] When etching the titanium foil directionally, place the polished titanium foil flat in a 100mL beaker, and add 20mL H with a percentage concentration of 20% 2 O 2 Solution. Cover the petri dish and place it in a 80°C constant temperature drying oven for directional etching for 2 days. Take out the titanium foil, rinse with deionized water, and dry at room temperature to obtain an amorphous titanium dioxide nano-array film.

Embodiment 3

[0050] According to the method in Example 1, except for the changes in the following steps, the other steps are exactly the same.

[0051] When etching the titanium foil directionally, place the polished titanium foil flat in a 100mL beaker, and add 20mL H with a percentage concentration of 30% 2 O 2 Solution. Cover the petri dish and put it in a 80°C constant temperature drying oven for directional etching for 1 day. Take out the titanium foil, rinse with deionized water, and dry at room temperature to obtain an amorphous titanium dioxide nano-array film.

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Abstract

The invention discloses preparation of a foliated titanium dioxide nano array thin film electrode and application of the foliated titanium dioxide nano array thin film electrode in a dye sensitized solar cell. The preparation comprises the following steps of: washing and polishing a metal titanium foil; directionally etching; crystallizing; passivating; dye-sensitizing a thin film electrode; and finally dye-sensitizing the titanium dioxide nano array thin film electrode. The foliated titanium dioxide nano array thin film electrode provided by the invention is obtained through liquid-phase directional etching under mild conditions, has a uniform array appearance, completely covers the surface of a substrate and has high roughness on the surface of the electrode and high dye adsorption capacity. The prepared dye sensitized solar cell has superior device performance such as high photoelectric conversion efficiency of monochromatic light, long electron life and low charge recombination rate. The electrode and the cell have the characteristics of simple preparation process, easiness and convenience in operation, easiness in large-area manufacturing and the like, so that the electrode has superior industrial production application prospect.

Description

technical field [0001] The invention belongs to the technical field of dye-sensitized solar cells, in particular to the preparation of a titanium dioxide nano-array thin film electrode and its application in dye-sensitized solar cells. Background technique [0002] Energy is the most basic driving force for the development and economic growth of the entire world, and the basis for human survival. The development of solar cells is an important way to solve the energy crisis and environmental problems worldwide, and has always been a hot spot and focus of research at home and abroad. Monocrystalline silicon solar cells are relatively mature in the research of solar cells, but their wide application is limited due to their high cost and complicated manufacturing process. In 1991, Professor Grötzel of the Swiss Federal Institute of Technology published a report on dye-sensitized nanocrystalline titanium dioxide mesoporous thin-film electrode solar cells (Nature 1991, 353, 737-7...

Claims

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Application Information

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IPC IPC(8): H01G9/04H01G9/20H01M14/00H01L51/48H01L51/44
CPCY02E10/542Y02E10/549
Inventor 孟哈日巴拉付乌有孙光曹建亮王燕张战营
Owner HENAN POLYTECHNIC UNIV