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Titanium dioxide (TiO2) nano-rod single-crystal array thin film as well as preparation method and application thereof

A technology of titanium dioxide and nanorods, applied in the field of solar cells, can solve problems such as hindering electron transmission, reducing battery performance, and increasing electronic recombination

Inactive Publication Date: 2011-07-13
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, studies have shown that there are many trapped states on the surface of titanium dioxide nanoparticles that hinder electron transport, and a large number of grain boundaries may also increase the probability of electron recombination, thereby reducing the performance of the battery

Method used

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  • Titanium dioxide (TiO2) nano-rod single-crystal array thin film as well as preparation method and application thereof
  • Titanium dioxide (TiO2) nano-rod single-crystal array thin film as well as preparation method and application thereof
  • Titanium dioxide (TiO2) nano-rod single-crystal array thin film as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: the preparation of the growth liquid that the volume ratio of titanium tetraisopropoxide, hydrochloric acid, acetic acid and deionized water is 0.2 / 4 / 8 / 8

[0019] The growth solution is prepared by the following process: measure 0.8 mL titanium tetraisopropoxide with a graduated cylinder, and add 16 mL hydrochloric acid, 32 mL acetic acid, and 32 mL deionized water to it successively, and place on a magnetic stirrer at room temperature Stir fully to make the reactants mix evenly, and obtain the growth solution with the volume ratio of titanium tetraisopropoxide, hydrochloric acid, acetic acid and deionized water being 0.2 / 4 / 8 / 8, and the solution is colorless and transparent.

Embodiment 2

[0020] Embodiment 2: the preparation of the growth liquid that the volume ratio of titanium tetraisopropoxide, hydrochloric acid, acetic acid and deionized water is 0.4 / 4 / 8 / 8

[0021] The growth solution was prepared by the following process: Measure 1.6 mL of titanium tetraisopropoxide with a graduated cylinder, and add 16 mL of hydrochloric acid, 32 mL of acetic acid, and 32 mL of deionized water successively, and place on a magnetic stirrer at room temperature Stir fully to make the reactants mix evenly, and then obtain the growth liquid whose volume ratio of tetraisopropoxytitanium, hydrochloric acid, acetic acid and deionized water is 0.4 / 4 / 8 / 8, and the solution is colorless and transparent.

Embodiment 3

[0022] Embodiment 3: the preparation of the growth liquid that the volume ratio of titanium tetraisopropoxide, hydrochloric acid, acetic acid and deionized water is 0.6 / 4 / 8 / 8

[0023] The growth solution was prepared by the following process: Measure 2.4 mL of titanium tetraisopropoxide with a graduated cylinder, and add 16 mL of hydrochloric acid, 32 mL of acetic acid, and 32 mL of deionized water successively, and place on a magnetic stirrer at room temperature Stir fully to make the reactants mix evenly, and then obtain the growth solution with the volume ratio of titanium tetraisopropoxide, hydrochloric acid, acetic acid and deionized water being 0.6 / 4 / 8 / 8, and the solution is colorless and transparent.

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Abstract

The invention belongs to the technical field of solar cells, and in particular relates to a titanium dioxide (TiO2) nano-rod single-crystal array thin film as well as a preparation method and an application thereof. A hydrochloric acid solution of titanium tetraisopropoxide is taken as a titanium source, acetic acid is utilized for controlling the acidity so as to further control the hydrolysis rate of TiO2, and a hydrothermal method is adopted for preparing the TiO2 nano-rod array thin film on a fluorine-doped tin oxide (FTO) conductive glass substrate. The one-dimensional nano-rod structure of the TiO2 can provide a direct transmission path for electrons and can be used for improving the transmission property of the electrons; after the acidity is reduced through dilution with the acetic acid, the titanium dioxide nano-rod single-crystal array thin film with larger specific surface area can be obtained; and the array thin film is utilized for packaging a dye-sensitized solar cell and performing performance testing, and then the short circuit current and photoelectric conversion efficiency of the cell can be greatly improved.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and in particular relates to a titanium dioxide nanorod single crystal array film and a preparation method thereof, and the application of the semiconductor film in dye-sensitized solar cells. technical background [0002] Dye-sensitized solar cells are a kind of solar cells developed in the past two decades based on the principle of plant chlorophyll photosynthesis. This kind of battery can broaden the spectral response of the semiconductor to the visible region by using the strong absorption of the dye on the surface of the semiconductor by means of the dye to absorb the visible light, so as to obtain the ideal photoelectric conversion efficiency. At present, the highest photoelectric conversion efficiency of dye-sensitized solar cells can be stabilized at more than 11%, and the life span can reach 10-20 years, and its manufacturing cost is only 1 / 5-1 / 10 of silicon solar cells. The most fu...

Claims

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Application Information

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IPC IPC(8): H01G9/04H01G9/20H01M14/00H01L51/44H01L51/48
CPCY02E10/542Y02E10/50Y02E10/549
Inventor 王忠胜黄秋柳周刚
Owner FUDAN UNIV
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