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Large-area flexible perovskite solar cell and manufacturing method thereof

A solar cell and perovskite technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of low photoelectric conversion efficiency and poor mechanical stability of large-area devices, so as to improve photoelectric conversion efficiency and repeatability, improve Mechanical stability, the effect of improving spectral utilization

Active Publication Date: 2018-05-08
INST OF CHEM CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a large-area flexible perovskite solar cell and its preparation method in order to overcome the problems of poor mechanical stability of flexible solar cells and low photoelectric conversion efficiency of large-area devices in the prior art

Method used

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  • Large-area flexible perovskite solar cell and manufacturing method thereof
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  • Large-area flexible perovskite solar cell and manufacturing method thereof

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preparation example Construction

[0038] The invention also provides a preparation method of a large-area flexible perovskite solar cell, comprising the following steps:

[0039] (1) Surface modification of the flexible transparent electrode to improve the hydrophilicity of the electrode surface;

[0040] (2) preparing a polymer template layer on the surface of the flexible transparent electrode after surface treatment;

[0041] (3) filling the nano-honeycomb scaffold material on the polymer template layer, and then removing the polymer template layer to obtain a nano-honeycomb scaffold;

[0042] (4) A perovskite layer, an optional interface transport layer, and a metal electrode are sequentially deposited on the upper layer of the nano-honeycomb scaffold to prepare a flexible perovskite solar cell.

[0043] According to the present invention, the surface energy of the flexible transparent electrode substrate is low, and the bonding with the conductive film will directly affect the overall quality of the flex...

Embodiment 1

[0065] A conductive polymer transparent electrode based on PET substrate (surface sheet resistance: 30Ω / □; light transmittance: 85%; 3cm×3cm) was selected, and its surface was treated with air plasma (100w, 2min) for use.

[0066] In a solvent with a volume ratio of deionized water and ethanol of 2:1, after 35min ultrasonic treatment, it was fully dispersed, and prepared into a polystyrene microsphere dispersion liquid with a mass fraction of 2% and a particle size of 200 nm, for use.

[0067] Add 100 μl of polystyrene microsphere dispersion dropwise to the transparent electrode substrate after air plasma treatment, spin-coat at 2000 rpm for 30 s, and place the spin-coated film in an oven at 80 °C for 20 min to complete the polymer template layer. After the film was cooled, 100 μl of nano-honeycomb scaffold material PEDOT:PSS Al 4083 (based on the total mass of the material, doped with isopropanol with a mass fraction of 10%, can improve wettability and ensure film spreading) d...

Embodiment 2

[0072] A conductive polymer transparent electrode based on PET substrate (surface sheet resistance: 30Ω / □; light transmittance: 85%; 3cm×3cm) was selected, and its surface was treated with air plasma (100w, 2min) for use.

[0073] In a solvent with a volume ratio of deionized water and ethanol of 2:1, after 40 minutes of ultrasonic treatment, it was fully dispersed, and prepared into a polystyrene microsphere dispersion liquid with a mass fraction of 2% and a particle size of 500 nm, for use.

[0074] Add 100 μl of polystyrene microsphere dispersion dropwise to the transparent electrode substrate after air plasma treatment, spin-coat at 2000 rpm for 30 s, and place the spin-coated film in an oven at 80 °C for 20 min to complete the polymer template layer. After the film was cooled, 100 μl of nano-honeycomb scaffold material PEDOT:PSS Al 4083 (based on the total mass of the material, doped with isopropanol with a mass fraction of 10%, can improve wettability and ensure film spre...

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Abstract

The invention relates to the field of photoelectric energy, and discloses a large-area flexible perovskite solar cell and a manufacturing method thereof. The structure of the cell comprises a flexibletransparent electrode, a nano honeycomb bracket, a perovskite layer and a metal electrode layer sequentially from bottom to top. The invention also discloses a manufacturing method for the large-areaflexible perovskite solar cell. In comparison with the prior art, through introducing the nano honeycomb bracket, the spectral utilization rate of the cell device can be improved; the nano honeycombbracket can be used as an optical resonator, and the photoelectric conversion efficiency and the repeatability of the large-area device are improved; and the nano honeycomb bracket can also be used asa mechanical buffer layer, the stress produced during the bending process can be effectively released, the perovskite crystal layer is protected, and the mechanical stability of the cell device can be effectively improved.

Description

technical field [0001] The invention relates to the field of photoelectric energy, in particular to a large-area flexible perovskite solar cell and a preparation method thereof. Background technique [0002] Among many thin-film solar cells, organic-inorganic hybrid perovskite solar cells have attracted much attention in the international frontier research field because of their low cost, solution processing and excellent photoelectric conversion performance. Among them, methyl lead ammonium iodide (CH 3 NH 3 PB 3 ) is one of the most representative materials. This type of perovskite material has the advantages of strong absorption, high mobility, long carrier life, adjustable band gap and multiple processing methods, making perovskite type Structure CH 3 NH 3 PB 3 Not only can the absorption of visible light and part of near-infrared light be realized, but also the generated photogenerated carriers are not easy to recombine, and the energy loss is small, which is the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/44H01L51/48
CPCH10K30/20H10K30/87Y02E10/549
Inventor 胡笑添李风煜宋延林
Owner INST OF CHEM CHINESE ACAD OF SCI
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