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a kind of inwo 4 :eu 3+ /tio 2 Composite photoanode and preparation method thereof

A composite light and anode technology, applied in photosensitive equipment, photovoltaic power generation, electrolytic capacitors, etc., can solve the problems of low photoelectric conversion efficiency of sensitized solar cells, and achieve the effects of low cost, simple equipment and simple process

Inactive Publication Date: 2017-12-19
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the technical problem of low photoelectric conversion efficiency of dye-sensitized solar cells assembled from existing composite photoanodes, and provides an InWO 4 :Eu 3+ / TiO 2 Composite photoanode and preparation method thereof

Method used

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  • a kind of inwo <sub>4</sub> :eu <sup>3+</sup> /tio <sub>2</sub> Composite photoanode and preparation method thereof
  • a kind of inwo <sub>4</sub> :eu <sup>3+</sup> /tio <sub>2</sub> Composite photoanode and preparation method thereof
  • a kind of inwo <sub>4</sub> :eu <sup>3+</sup> /tio <sub>2</sub> Composite photoanode and preparation method thereof

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specific Embodiment approach 1

[0017] Specific implementation mode 1: This implementation mode is an InWO 4 :Eu 3+ / TiO 2 Composite photoanode, specifically made of InWO 4 :Eu 3+ Nanocrystalline, P25TiO 2 and FTO conductive glass; the InWO 4 :Eu 3+ The nanocrystals are composed of indium nitrate aqueous solution, europium nitrate aqueous solution and tungstate aqueous solution; the InWO 4 :Eu 3+ Nanocrystalline and P25TiO 2 The mass ratio is 1:(10~1000); the surface resistance of the FTO glass is 30Ω / cm 2 , the length is 2cm, the width is 1.5cm, and the thickness is 3mm.

specific Embodiment approach 2

[0018] Specific implementation mode 2: This implementation mode is an InWO 4 :Eu 3+ / TiO 2 The preparation method of composite photoanode is specifically carried out according to the following steps:

[0019] 1. Add indium nitrate aqueous solution and europium nitrate solution to the surfactant solution, then add tungstate aqueous solution, stir evenly to obtain a mixed solution, and solvent heat treat the mixed solution at a temperature of 110°C to 220°C for 2 hours to 48h, then washed with absolute ethanol for 2 to 3 times, and dried for 8h to 10h at a temperature of 60°C to 80°C to obtain InWO 4 :Eu 3+ nanocrystals; the solvent of the surfactant solution is absolute ethanol, the solute is a surfactant, and the volume ratio of the solvent to the solute is 1:2; the concentration of the indium nitrate aqueous solution is 0.1mol / L~0.15mol / L; the concentration of the described europium nitrate solution is 0.05mol / L~2mol / L; the concentration of the described tungstate aqueou...

specific Embodiment approach 3

[0022] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the surfactant described in step 1 is oleic acid. Others are the same as the first embodiment.

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Abstract

The invention discloses a preparation method of an InWO4:EU<3+> / TiO2 composite photo anode, and relates to a preparation method of a TiO2 composite photo anode. The preparation method aims to solve the technical problems of low photoelectric conversion efficiency of a traditional composite photo anode assembled to a dye-sensitized solar cell. The composite photo anode comprises InWO4:Eu<3+> nanocrystal, P25TiO2 and FTO conductive glass. The preparation method comprises the following steps of 1, preparation of the InWO4:Eu<3+> nanocrystal; 2, preparation of a mixed sol; and 3, carrying out roasting. The preparation method has the advantages that the InWO4:EU<3+> / TiO2 composite photo anode is simple in process, low in cost, simple in required device and high in production safety, the capturing capability of the anode on sunlight can be improved, industrial production is easy to achieve, and the photoelectric conversion efficiency after the prepared InWO4:EU<3+> / TiO2 composite photo anode is applied to the dye-sensitized solar cell reaches 7.98%.

Description

technical field [0001] The present invention relates to a kind of TiO 2 Composite photoanode and its preparation method. Background technique [0002] Dye-sensitized solar cells (DSSCs for short) have attracted widespread attention at home and abroad because of their low cost and simple preparation process. The photoelectric conversion efficiency of DSSCs largely depends on the dye-sensitized semiconductor photoanode. At present, the commonly used dyes are bipyridylruthenium series compounds. Their absorption range is mainly between 400-600nm, and their absorption of infrared light is weak, which limits the further improvement of the photoelectric conversion efficiency of DSSCs to a certain extent. By broadening the spectral response range of the dye, optimizing the semiconductor surface structure and composition, and strengthening the combination between the dye and the semiconductor, the absorption of light can be significantly enhanced, the charge recombination can be r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/20H01G9/042
CPCY02E10/542
Inventor 王国凤王玉萍曲阳
Owner HEILONGJIANG UNIV