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Titanium dioxide light anode, and preparation method and use thereof

A technology of titanium dioxide and photoanode, applied in the field of photoanode, can solve the problems of unfavorable photoelectric conversion efficiency of batteries, low utilization efficiency of sunlight, weak scattering, etc., and achieves the improvement of photoelectric conversion efficiency, photoelectric conversion efficiency, and absorption probability. Effect

Inactive Publication Date: 2011-11-23
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The titanium dioxide thin film coated solely by titanium dioxide nanoparticles, because the titanium dioxide nanoparticles are closely arranged, the scattering of light is weak, so the utilization efficiency of sunlight entering the photoanode is low, which is not good for improving the photoelectric conversion efficiency of the battery

Method used

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  • Titanium dioxide light anode, and preparation method and use thereof
  • Titanium dioxide light anode, and preparation method and use thereof
  • Titanium dioxide light anode, and preparation method and use thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Example 1: The photoelectric conversion performance of a titanium dioxide thin film electrode uniformly mixed and coated with 0.2 g of 1000 nm ring-shaped titanium dioxide microspheres and 5 ml of absolute ethanol.

[0033] 1000nm (microsphere diameter) cyclic titanium dioxide microspheres (see figure 2 Shown) is obtained from 0.51ml of tetrabutyl titanate and 0.2ml of hydrofluoric acid, 16h at 180°C solvothermally. Spin centrifugal separation, dry in an oven at 60°C for 3h, then mix with high-power ultrasonic 0.2g and 5ml absolute ethanol, and then stir for 1h and coat the photoanode of titanium dioxide nanoparticles with a thickness of about 12μm. The coated conductive glass is calcined in a muffle furnace at 450° C. for 2 hours to obtain a double-layer structure photoanode for a dye-sensitized nanocrystalline solar cell. Soak the photoanode in a concentration of 5×10 -4 The mol / L ruthenium complex N719 dye (English name: RuL2(NCS)2:2TBA (L=2,2'-bipyridyl-4,4'-dicarboxy...

Embodiment 2

[0034] Example 2: From 0.2g 2000nm spherical titanium dioxide microspheres (see image 3 Shown) and 5ml of absolute ethanol uniformly mixed and coated on the photoelectric conversion performance of the titanium dioxide film electrode.

[0035] 2000nm (microsphere diameter) spherical titanium dioxide microspheres are obtained from 1.02ml of tetrabutyl titanate, 16h, 180℃ solvothermal. Rotate and separate, dry in an oven at 60°C for 3h, then mix with high-power ultrasonic 0.2g and 5ml of absolute ethanol, and after stirring for 1h, apply a film on the photoanode of titanium dioxide nanoparticles with a thickness of approximately 12μm. The coated conductive glass is calcined in a muffle furnace at 450° C. for 2 hours to obtain a double-layer structure photoanode for a dye-sensitized nanocrystalline solar cell. Soak the photoanode in a concentration of 5×10 -4 With the mol / L N719 solution for 24 hours, the photoanode was fully sensitized by the dye. Then the photoanode is connected ...

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Abstract

The invention discloses a titanium dioxide light anode, comprising a transparent conductive substrate and a coating film coated on the transparent conductive substrate. The coating film contains titanium dioxide nano particles, wherein a titanium dioxide microsphere layer is also coated on the surface of the coating film. The invention further discloses a method for preparing the titanium dioxide light anode and use thereof. Compared with the prior art, the invention has the advantages that by introducing the titanium dioxide light anode with a double-layer structure, the number of light propagation paths in a titanium dioxide film is increased; the rate that light is absorbed by the titanium dioxide film is increased; the photoelectric conversion efficiency of a cell is advantageous for being improved; the preparation of the titanium dioxide microsphere is simple, environment-friendly and cheap and the profile of the titanium dioxide microsphere is novel; the titanium dioxide microsphere is applicable for being used as a scattering layer and coated on a light anode of a dye-sensitized nanocrystalline solar cell; the titanium dioxide light anode with the double-layer structure is formed; the scattering characteristics of the light anode are improved; and the photoelectric conversion efficiency of the cell is improved.

Description

Technical field [0001] The invention relates to a photoanode of a solar cell, in particular to a titanium dioxide photoanode, and also relates to a preparation method and application of the photoanode. Background technique [0002] Photovoltaic cells with photoanodes of porous titanium dioxide nanostructures sensitized by carboxylic acid bipyridine ruthenium complexes-dye-sensitized solar cells, have brought revolutionary innovations to the development of photoelectrochemical cells, with high photoelectric conversion efficiency and far lower prices In traditional semiconductor solar cells, the titanium dioxide nanostructured photoanode mainly includes a transparent conductive substrate and a titanium dioxide nanoparticle coating film coated on it. The transparent conductive substrate often uses conductive glass. For technical documents in this respect, please refer to the Chinese Invention Application Publication No. 200810041804.0 "Method for Preparation of Dye-sensitized Solar ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/04H01G9/20H01M14/00H01L51/42H01L51/44H01L51/48
CPCY02E10/542Y02E10/549Y02E10/50
Inventor 诸跃进张京郑君王培卿孙强杨广涛崔艳峥张雪妮
Owner NINGBO UNIV
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