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Perovskite solar cell containing fullerene derivatives and preparation method thereof

A technology of fullerene derivatives and solar cells, which is applied in the field of solar cells, can solve problems such as no fullerene derivatives, and achieve the effect of promoting carrier conduction and improving photoelectric conversion efficiency

Active Publication Date: 2022-01-04
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there is no report on the use of fullerene derivatives containing polyethylene glycol side chains to regulate the microstructure of the perovskite layer and promote charge conduction to prepare high-efficiency perovskite solar cells.

Method used

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  • Perovskite solar cell containing fullerene derivatives and preparation method thereof
  • Perovskite solar cell containing fullerene derivatives and preparation method thereof
  • Perovskite solar cell containing fullerene derivatives and preparation method thereof

Examples

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preparation example Construction

[0038] The preparation method of the perovskite solar cell containing fullerene derivatives comprises the following steps:

[0039] (1) Preparation of electron conducting layer:

[0040] First add TiCl to the ice-water mixture 4 Aqueous solution (where TiCl 4 The volume ratio of water and water is 1.5%~4%), configure TiO 2 colloid. Then take the FTO conductive glass that has been treated with ultraviolet light for 10 to 20 minutes, and put it into TiO at 70°C. 2Soak in the colloid for 50 minutes, take it out, rinse it with deionized water and ethanol in turn, and then heat treat it at 200 ° C for 30 to 60 minutes to obtain TiO as an electronic conductive layer prepared on the FTO conductive glass. 2 dense layer.

[0041] (2) Preparation of perovskite layer:

[0042] CH at a molar ratio of 1:1 3 NH 3 I and PbI 2 Dissolve in a solvent to obtain a perovskite precursor solution, and then add PCBPEG. For the TiO obtained in step (1) 2 The dense layer was treated with ult...

Embodiment 1

[0051] In this example, PCBPEG is first prepared by using PEG and PCBM with a molecular weight of 4000, and then a perovskite solar cell containing fullerene derivatives is prepared according to the above method, and the PCBPEG and perovskite precursor solution added in step (2) The mass ratio is 0.07%.

Embodiment 2

[0053] In this example, PCBPEG is first prepared by using PEG and PCBM with a molecular weight of 4000, and then a perovskite solar cell containing fullerene derivatives is prepared according to the above method, and the PCBPEG and perovskite precursor solution added in step (2) The mass ratio is 0.03%.

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Abstract

The invention relates to a perovskite solar cell containing fullerene derivatives, the perovskite solar cell containing fullerene derivatives comprises a transparent conductive substrate, an electron conducting layer, a perovskite layer, and a hole conducting layer and a metal electrode, the perovskite layer includes fullerene derivatives containing polyethylene glycol side chains, and the fullerene derivatives containing polyethylene glycol side chains are obtained by reacting PCBM with polyethylene glycol. The invention also relates to a preparation method of the perovskite solar cell containing the fullerene derivative. The perovskite solar cell containing fullerene derivatives of the invention has the advantages of adjustable perovskite layer morphology, high efficiency and simple preparation.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a perovskite solar cell containing fullerene derivatives and a preparation method thereof. Background technique [0002] In recent years, perovskite solar cells have attracted much attention due to their high photoelectric conversion efficiency. The morphology and photoelectric properties of the perovskite layer determine the photoelectric conversion efficiency of the battery to some extent, so it is particularly important. [0003] Fullerene C 60 It is the third allotrope of elemental carbon after diamond and graphite. It is a general term for a series of cage-shaped elemental molecules formed by carbon atoms. Due to its unique structure and many excellent physical and chemical properties, fullerene and various derivatives of fullerene have very broad application prospects. By modifying the fullerene structure and introducing different functional groups, the solubility, e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCH10K71/12H10K85/215H10K30/151Y02E10/549
Inventor 吴素娟秦齐齐陆旭兵刘俊明
Owner SOUTH CHINA NORMAL UNIVERSITY