Preparation method and application of nano cubic upconversion luminescent material

A technology of nano-cubes and luminescent materials, applied in the field of solar cells, can solve the problems of large particles and difficult shape control, and achieve the effects of simple preparation process, enhanced photoelectron scattering, and increased photoelectric conversion efficiency

Inactive Publication Date: 2017-10-17
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the general known hydrothermal synthesis method for preparing this composite material is difficult to control the shape and the particles are relatively large.

Method used

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  • Preparation method and application of nano cubic upconversion luminescent material
  • Preparation method and application of nano cubic upconversion luminescent material
  • Preparation method and application of nano cubic upconversion luminescent material

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Experimental program
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Effect test

Embodiment 1

[0053] TiO was screen-printed 2 The slurry is coated on FTO glass, dried at room temperature, put into a tube furnace for calcination, raised to 450 ℃ at a rate of 10 ℃ / min, calcined for 30 minutes, cooled naturally, coated with one layer and fired with a total of 6 ~ 8 floors. Finally, a layer of nanocube composite CeO 2 :Er 3+ / Yb 3+ , still at a heating rate of 10°C / min to 450°C, and calcined for 40min. Cool down naturally, soak in N719 dye for 12-24 hours, rinse with absolute ethanol, and obtain the photoanode of the dye-sensitized solar cell.

Embodiment 2

[0055] TiO was screen-printed 2 Coat the slurry on the FTO glass, dry it at room temperature, put it into a tube furnace for calcination, raise the temperature to 450 ℃ at a rate of 10 ℃ / min, calcine for 30 min, cool down naturally, apply one layer and burn one layer, and the coating is completed 6-8 floors. Finally, a layer of nanocube composite CeO 2 :Er 3+ / Yb 3+ / Fe 3+ , still at a heating rate of 10 °C / min to 450 °C, calcined for 30 min, and one layer was applied and one layer was fired. Cool down naturally, soak in N719 dye for 12-24 hours, rinse with absolute ethanol, and obtain the photoanode of the dye-sensitized solar cell.

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Abstract

The invention relates to a preparation method and an application of a nano cubic upconversion luminescent material and belongs to the technical field of solar batteries. The preparation method comprises the steps of mixing and dropwise adding a cerous nitrate aqueous solution, a ytterbium nitrate aqueous solution, an erbium nitrate aqueous solution and a ferric nitrate aqueous solution into a water dispersant of polyvinylpyrrolidone, placing under a 200 DEG C environmental condition for hydrothermal reaction, cooling to a room temperature after the reaction is finished, centrifuging to obtain a solid phase, and performing washing, drying and roasting to form the upconversion luminescent material. A photo-anode material of a dye-sensitized solar cell prepared by the material has good photoelectric properties; the photoelectric conversion efficiency is higher than that of pure titanium dioxide by 27.1%; a preparation technology is simple; the operation is easy and simple; and the material is nontoxic, innocuous and applicable to the field of the solar batteries.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and in particular relates to the preparation technology of dye-sensitized solar cell photoanode materials. Background technique [0002] Today, as the energy crisis is deepening, due to the non-renewable fossil energy, it is difficult to promote the use of nuclear energy and wind energy on a large scale. As another renewable and clean energy, solar energy is enough to attract people's attention. Using solar energy to explore new solar cells has become a very important direction in various related disciplines. [0003] According to the development history of solar cells, solar cells can be divided into three categories: silicon-based semiconductor cells, compound semiconductor solar cells, and new thin-film solar cells that introduce organic matter and nanotechnology, including dye-sensitized solar cells. [0004] The photoanode plays an important role in dye-sensitized solar cells as a carri...

Claims

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Application Information

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IPC IPC(8): C09K11/78H01G9/20H01G9/042B82Y20/00
Inventor 韩贵李丹阳白静怡
Owner YANGZHOU UNIV
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