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Application of down-conversion luminescent material on dye-sensitized solar cells

A dye-sensitized, solar cell technology, applied in the application field of down-conversion luminescent materials in dye-sensitized solar cells, can solve the problems of difficult spectral response range, affecting the photoelectric conversion efficiency of cells, etc., to improve the photoelectric conversion efficiency and performance. The effect of stability

Inactive Publication Date: 2009-11-18
INST OF PLASMA PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In summary, traditional dye-sensitized solar cells have limited spectral response due to the dye sensitizer, which affects the photoelectric conversion efficiency of the cell. It is extremely difficult to simply expand the dye sensitizer to the full spectral response range.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] First, use 95% alcohol to clean the outer surface of dye-sensitized solar cells and components (5cm 2 ), followed by cleaning with acetone, and then using absorbent cotton to remove stains on the outer surface of the dye-sensitized solar cells and modules.

[0021] Take 1 gram of LaVO 4 Nanoparticles (particle size: 10nm) are uniformly dispersed in 10 grams of polyurethane. After stirring evenly, they are evenly spread on the outer surface of the dye-sensitized solar cell, and are cured on site at 50°C for 48 hours to form a film with a thickness of about 1mm. Thin films of down-converting materials. The conductive glass coated with down-converting material film on the surface is applied to dye-sensitized solar cells to achieve the purpose of converting ultraviolet light into visible light.

Embodiment 2

[0023] First, use 95% alcohol to clean the outer surface of dye-sensitized solar cells and components (5cm 2 ), followed by cleaning with acetone, and then using absorbent cotton to remove stains on the outer surface of the dye-sensitized solar cells and modules.

[0024] 1 g LaVO 4 (particle size is 10nm) and 5 grams of acetylsalicylic acid are dissolved in 50mL of acetonitrile, then add 2 grams of triethylamine, slowly add the acetonitrile solution of 10 grams of o-phenanthroline after filtration. After the precipitate was filtered out with suction, the precipitate was transferred to a 50 mL round bottom flask, and 50 mL of acetonitrile was added for magnetic stirring, the precipitate was washed and dried to obtain the desired rare earth complex. Weigh an appropriate amount of rare earth complex and dissolve it in 10 mL of trichloroethane, and dissolve 5 g of polyvinyl chloride (PVC) powder in 100 mL of tetrahydrofuran. Take 10 grams of PVC solution in tetrahydrofuran and ...

Embodiment 3

[0026] First, use 95% alcohol to clean the outer surface of dye-sensitized solar cells and components (5cm 2 ), followed by cleaning with acetone, and then using absorbent cotton to remove stains on the outer surface of the dye-sensitized solar cells and modules.

[0027] 1 g LaVO 4 Nanoparticles (with a particle size of 10 nm) were mixed in 10 grams of terpineol and dispersed ultrasonically for 1 hour. Using one or more screen printing methods to screen-print an up-converting functional luminescent film with a thickness of 0.05mm on the outer surface of the dye-sensitized solar cell and the module and apply it to the dye-sensitized solar cell to convert ultraviolet light into visible light.

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Abstract

The invention discloses an application of down-conversion luminescent material on dye-sensitized solar cells, which covers down-conversion luminescent material doped by nano particles with particle size of 5 to 50nm and rare earth taking phosphate, silicate and vanadate with a core-shell structure as a substrate on the surface of the dye-sensitized solar cell, dopes the down-conversion luminescent material into a nano TiO2, nano ZnO or SnO2 semiconductor material porous membrane to prepare a nano semiconductor photoelectrode with down-conversion function or disperses the down-conversion luminescent material in the electrolyte of the dye-sensitized solar cell. The invention utilizes the down-conversion luminescent material to convert ultraviolet light into visible light, thus not only solving the problem of instability of a solar cell caused by the ultraviolet light, but also absorbing an ultraviolet spectrum by the quantum cutting technology to emit the visible light so as to cause the cell to utilize sunlight to the maximum extent, and improve the photoelectric conversion efficiency and the performance stability of the cell.

Description

technical field [0001] The invention relates to the application field of dye-sensitized solar cells, in particular to the application of down-conversion luminescent materials on dye-sensitized solar cells. Background technique [0002] Dye-sensitized solar cells use a composite system combining organic photosensitive functional molecules and semiconductor nanomaterials to photoelectrically convert sunlight. The advantages of fast charge transfer and separation, combined with the porosity and high specific surface area of ​​nanocrystalline semiconductor films, make full use of the design flexibility of organic molecules and some new characteristics of semiconductor nanomaterials that are different from bulk materials. [0003] The better dye sensitizer used in dye-sensitized solar cells is the bipyridine complex of Ru. This dye has a wider visible spectrum absorption range, and the monochromatic light quantum efficiency in the visible range of 400nm to 600nm exceeds 80%. . ...

Claims

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Application Information

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IPC IPC(8): H01G9/042H01G9/022H01G9/20H01M14/00H01L51/44H01L51/46H01L51/42H01L51/48
CPCY02E10/542Y02E10/549
Inventor 戴松元张玉香张昌能胡林华孔凡太潘旭
Owner INST OF PLASMA PHYSICS CHINESE ACAD OF SCI
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