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Composite double-layer photo-anode film, preparation method thereof and dye-sensitized solar cell

A composite double-layer and photoanode technology, applied in the field of dye-sensitized solar cells, can solve the problems of unsatisfactory improvement of solar photoelectric efficiency, low photoelectric efficiency of photoanode films, etc., and achieves strong dye adsorption capacity and large light absorption. The effect of range, large light-capturing capabilities

Inactive Publication Date: 2019-03-26
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, researchers mainly improve the performance of the photoanode by designing the morphology of the photoanode, improving the composition of the photoanode, and optimizing the preparation process. However, these measures are not particularly ideal for improving the photovoltaic efficiency of solar energy.
Since the photoanode film can only absorb visible light below 700nm after dye sensitization, the near-infrared light that accounts for 40% of sunlight cannot be absorbed, resulting in low photoelectric efficiency of the existing photoanode film

Method used

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  • Composite double-layer photo-anode film, preparation method thereof and dye-sensitized solar cell

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preparation example Construction

[0041] The present invention also provides a method for preparing the above-mentioned composite double-layer photoanode film, which comprises the following steps:

[0042] NaYbF 4 : Ho 3+ The up-conversion luminescent powder is mixed with titanium dioxide powder, and the first dispersant, the first leveling agent, and the first pore-forming film-forming agent are added to prepare the first viscous slurry; the first viscous slurry is coated on the surface of the conductive glass and dried, Annealing treatment to form a composite luminescent layer on the surface of conductive glass;

[0043] Mix the porous hollow titanium dioxide microspheres with the second dispersant, the second leveling agent, and the second pore-forming film-forming agent to prepare a second viscous slurry, apply the second viscous slurry on the surface of the composite luminescent layer and dry , Annealing treatment.

[0044] Wherein, preferably, the first dispersant and the second dispersant are selecte...

Embodiment 1

[0058] The embodiment of the present invention provides a composite double-layer photoanode film, which is prepared by the following steps:

[0059] S11. The above-prepared NaYbF 4 : Ho 3+Mix up-conversion luminescent powder and P25 titanium dioxide powder at a mass ratio of 3:97 to obtain a mixture; weigh 1.5 g of the obtained mixture and put it into a 100ml small beaker, and mix it with 50mL of absolute ethanol, isopropanol, acetone, glacial acetic acid, One or more dispersants in acetylacetone, 5.0g turpentine permeating alcohol leveling agent, 8.25g of ethyl cellulose, methyl cellulose, carboxy cellulose, hydroxymethyl cellulose, hydroxypropyl cellulose A pore-forming film-forming agent is fully mixed, then stirred and heated to prepare the first viscous slurry, and the first viscous slurry is coated on the surface of the FTO conductive glass, and the coating thickness is controlled to the thickness of two layers of adhesive tape with 3M adhesive tape. Then, after drying...

Embodiment 2

[0063] The embodiment of the present invention provides a composite double-layer photoanode film, which is prepared by the following steps:

[0064] S21. The above-prepared NaYbF 4 : Ho 3+ The up-conversion luminescent powder and P25 powder were mixed according to the mass ratio of 1:99, 2:98, 4:96, 5:95, and 6:94 to obtain the mixture, and 1.5g of the obtained mixture was weighed and put into 5 In a 100ml small beaker, numbered 1, 2, 3, 4, 5, and respectively mixed with 50mL of absolute ethanol, isopropanol, acetone, glacial acetic acid, acetylacetone or one or more dispersants, 5.0g turpentine Permeable alcohol leveling agent, 8.25g of a pore-forming film-forming agent in ethyl cellulose, methyl cellulose, carboxy cellulose, hydroxymethyl cellulose, and hydroxypropyl cellulose is fully mixed, stirred and heated to make the dispersant After volatilization to a certain extent, 5 groups of the first viscous slurry were prepared;

[0065] S22. Coat the 5 groups of the first v...

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Abstract

The invention relates to a composite double-layer photo-anode film, a preparation method thereof and a dye-sensitized solar cell and relates to the field of dye-sensitized solar cells. The composite double-layer photo-anode film comprises a composite light-emitting layer and a light scattering layer, wherein the composite light-emitting layer comprises mixed doped NaYbF4:Ho3+ up-conversion luminescent powders and titanium dioxide powders; and the light scattering layer comprises porous hollow titanium dioxide microspheres. The composite double-layer photo-anode film provided by the invention has a large light absorption range, light capturing capability, and a good dye adsorption capability. Further, the present invention relates to a method for preparing the composite double-layer photo-anode film and a dye-sensitized solar cell comprising the composite double-layer photo-anode film.

Description

technical field [0001] The invention relates to the field of dye-sensitized solar cells, and in particular to a composite double-layer photoanode film, a preparation method thereof and a dye-sensitized solar cell. Background technique [0002] In the 21st century, non-renewable, high-pollution coal and oil and other major energy materials can no longer meet the rapid economic development of the world. Solar energy, as an inexhaustible and renewable clean energy, has been widely recognized by people in recent years. focus on. The most widely researched and applied solar cells are silicon-based solar cells, but its high raw material cost and complicated preparation process limit its development prospects, making it difficult to popularize. Dye-sensitized solar cells have attracted widespread attention due to their abundant raw materials, simple preparation process, low production cost, environmental friendliness and relatively stable high conversion rate. [0003] A dye-sens...

Claims

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Application Information

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IPC IPC(8): H01G9/20H01G9/042
CPCH01G9/20H01G9/2031Y02E10/542
Inventor 赵丽胡圳王世敏董兵海
Owner HUBEI UNIV
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