Preparation method of core-shell hollow reinforced upconversion material for dye-sensitized solar cells and application thereof

Abstract

The invention discloses a preparation method of a core-shell hollow reinforced upconversion material for dye-sensitized solar cells and application thereof. The core-shell hollow reinforced upconversion material is a core-shell hollow structure composed of noble metal silver nanoparticles and a rare earth doped upconversion material. The invention utilizes the localized surface plasmon polariton effect of noble metal and far-field scattering effect to enhance the luminescence of the rare earth upconversion material. Application of the sub-micron grade reinforced upconversion material to dye-sensitized solar cells can utilize the characteristic that the upconversion material can convert near-infrared light into visible light to expand the spectral response range of dye, and also can enhance the scattering ability of cells and strengthen light absorption, thus effectively improving the photoelectric conversion efficiency of cells.

Description

technical field [0001] The invention designs a preparation method and application of a core-shell hollow enhanced up-conversion material for dye-sensitive solar cells, belonging to the technical field of solar cells. Background technique [0002] As one of the typical representatives of the third-generation solar cells, dye-sensitized solar cells have attracted widespread attention due to their advantages such as low manufacturing cost, simple preparation process, no pollution to the environment, and relatively high theoretical conversion efficiency. At this stage, the highest efficiency of dye-sensitized cells has reached 14%, but there is still a huge gap with the theoretical maximum efficiency of 33%. Why is there such a big gap? At present, the dye sensitizers with the best effect in dye-sensitized solar cells are bipyridine complexes of Ru, such as N719 and N3. This type of sensitizer can only absorb 300-800nm ​​solar radiation, which is mainly distributed in the visi...

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Problems solved by technology

[0006] The present invention designs a core-shell hollow structure enhanced up-conversion luminescent material Ag@NaxGdFyOz:Yb/Er@TiO 2 , apply it to dye-sensitized solar cells, use noble metal plasmon effect and strong scattering effect to enhance upconversion luminescence, and

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