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Novel meso-structure perovskite solar energy cell and preparation method thereof

A solar cell and mesoporous structure technology, applied in the field of solar cells, can solve the problem of inability to absorb infrared light, achieve the effect of increasing light utilization rate and photocurrent density

Inactive Publication Date: 2017-06-30
CHANGZHOU UNIV +1
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: to overcome the deficiencies of the prior art, to provide a new type of mesoporous perovskite solar cell and its preparation method, to solve the problem that the infrared light larger than its optical bandgap in the previous perovskite cell cannot absorption defect

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  • Novel meso-structure perovskite solar energy cell and preparation method thereof
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  • Novel meso-structure perovskite solar energy cell and preparation method thereof

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Embodiment Construction

[0024] The present invention will now be further described with reference to specific embodiments. These drawings are all simplified schematic diagrams only to illustrate the basic structure of the present invention in a schematic manner, so they only show the structures related to the present invention.

[0025] like Figure 1 to Figure 4 As shown in the figure, a novel mesoporous structure perovskite solar cell is characterized in that the cell is composed of an FTO conductive glass layer, a titanium oxide dense layer, a porous layer, a perovskite absorption layer, and a hole transport layer from bottom to top. and metal electrodes, the porous layer is a porous layer of upconversion material.

[0026] The porous layer of the upconversion material is Er / Yb-NaYF 4 Nanoparticles, the particle size of the nanoparticles is 20-30nm, the thickness of the porous layer of the upconversion material is 290-310nm, and the thickness is preferably 300nm, and the doping ratios of Er and ...

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Abstract

The invention relates to a novel meso-structure perovskite solar energy cell comprising a FTO conductive glass layer, a titanium oxide compact layer, a porous layer, a perovskite absorption layer, a hole transport layer and a metal electrode from bottom to top. The porous layer is made from a material having an upconversion characteristic. The preparation method includes: selecting an FTO and carrying out cleaning and drying; spinning an isopropyl titanate solution on the FTO to obtain a titanium oxide compact layer; spinning a Er / Yb-NaYF4 solution on the titanium oxide compact layer to obtain an upconversion-material porous layer; spinning a perovskite precursor solution on the upconversion-material porous layer to obtain a perovskite absorption layer; spinning a prepared HTM solution on the perovskite absorption layer to obtain a hole transport layer; and carrying out metal electrode deposition. The upconversion-material porous layer absorbs infrared light that CH3NH3PbI3 can not absorb and emits visible light and thue the visible light is absorbed by the perovskite material, so that the photoelectric current density of the cell can be improved.

Description

technical field [0001] The invention relates to the field of solar cells, in particular to a novel mesoporous structure perovskite solar cell and a preparation method thereof. Background technique [0002] Solar cells are one of the effective ways to solve the energy crisis of human society. In recent years, organic / inorganic hybrid perovskite cells have developed rapidly, showing good application prospects. With the continuous development of preparation technology, the photoelectric conversion efficiency of perovskite cells has reached as high as 22.1%. The currently reported mesoporous organic / inorganic hybrid perovskite cells are mainly composed of FTO / TiO. 2 Dense layer / TiO 2 Porous layer / CH 3 NH 3 PbI 3 Absorber layer / spiro-OMeTAD hole transport layer / Au. [0003] CH 3 NH 3 PbI 3 As the most widely used perovskite light absorber, its forbidden band width is about 1.5 eV, and its absorption cutoff wavelength is 800 nm, which cannot absorb infrared light larger t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCH10K30/151H10K2102/00Y02E10/549
Inventor 袁宁一房香丁建宁
Owner CHANGZHOU UNIV
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