Zinc porphyrin supramolecular dye sensitizer and preparation method and application thereof

A dye sensitizer, zinc porphyrin technology, applied in the field of solar cells, can solve the problems of difficulty in making further breakthroughs in cell efficiency, limitations of dye sensitizers, gaps in theoretical efficiency, etc., and achieve good photoelectric conversion efficiency, Reduce complex synthesis steps, reduce the effect of charge recombination behavior

Active Publication Date: 2019-05-24
JIANGSU UNIV OF TECH
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Problems solved by technology

Although dye-sensitized solar cells have been greatly developed, the current photoelectric conversion efficiency is still far from the theoretical efficiency, and the dye sensitizers are limited to single-layer dyes, such as the more mature ruthenium pyridine dyes, Metalloporphyrin dyes and pure organic dyes, etc.
Although the photoelectric conversion efficiency of the battery device based on the pure organic dye ADEKA-1 has reached 14.3%, due to the limitation of the photon harvesting ability of the monolayer dye itself, it is difficult to make a major breakthrough in the b

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  • Zinc porphyrin supramolecular dye sensitizer and preparation method and application thereof
  • Zinc porphyrin supramolecular dye sensitizer and preparation method and application thereof
  • Zinc porphyrin supramolecular dye sensitizer and preparation method and application thereof

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preparation example Construction

[0022] The embodiment of the present invention provides a kind of preparation method of zinc porphyrin supramolecular dye sensitizer, comprising the following steps:

[0023] Using zinc porphyrin chromophore as antenna molecule and 4-pyridylbenzoic acid anchor molecule on photoanode TiO 2 Zinc porphyrin supramolecular self-assembly is performed on the surface to obtain the dye sensitizer, and the structure of the dye sensitizer is shown in formula A below:

[0024]

[0025] In some embodiments of the present invention, the structural diagram of the zinc porphyrin chromophore is shown in formula B, and the anchor molecule is shown in formula C:

[0026]

[0027] In some embodiments of the present invention, comprise the following steps: TiO 2 The nanocrystalline film is first sensitized in the anchoring molecule solution for 8-12 hours, washed and dried, and then zinc porphyrin supramolecular self-assembly is performed in the antenna molecule zinc porphyrin chromophore s...

Embodiment 1

[0033] combined with Figure 1-3 , the present embodiment is a zinc porphyrin-based zinc porphyrin supramolecular self-assembly method and its application in dye-sensitized solar cells, the specific preparation steps are as follows:

[0034] (1) Preparation of TiO2 nanocrystalline film:

[0035] Before use, the FTO glass slides were sonicated in deionized aqueous solution for half an hour with detergent, and then washed with deionized water and ethanol. The TiO2 nanocrystalline thin film is prepared by screen printing technology, the particle size of TiO2 is 20nm, and the pore size is 32nm. The thickness of the TiO2 thin film of 4×4mm2 is 12 μm.

[0036] (2) Zinc porphyrin supramolecular self-assembly method:

[0037] Soak the prepared TiO2 nanocrystalline film in 1mmol of 4-pyridylbenzoic acid N,N-dimethylformamide solution for 12 hours, then wash with ethanol, dry naturally, and then put 0.3mmol of The antenna molecule zinc porphyrin was soaked in dichloromethane solutio...

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Abstract

The invention belongs to the technical field of solar cells, and particularly relates to a zinc porphyrin supramolecular dye sensitizer, a preparation method and application thereof. Zinc porphyrin chromophores, which are used as antenna molecules, and 4-pyridyl benzoic acid anchoring molecules are subjected to zinc porphyrin supermolecule self-assembly on the surface of photo-anode TiO2 to obtainthe dye sensitizer, the structure of the dye sensitizer is shown in a formula A shown in the description, and then, the dye sensitizer is applied to a dye-sensitized solar cell. According to the invention, the zinc porphyrin chromophores, which are used as antenna molecules, and the 4-pyridyl benzoic acid anchoring molecules are subjected to zinc porphyrin supramolecular self-assembly to construct the zinc porphyrin supramolecular dye sensitizer, so that complex synthesis steps of common dye sensitizers are effectively reduced, and the photon trapping performance of a device is improved.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a zinc porphyrin supramolecular dye sensitizer and its preparation method and application. Background technique [0002] In recent years, because the rapid economic development has also brought serious environmental pollution and energy shortages, people have shown increasing interest in the development and utilization of new energy. New energy has advantages that traditional energy cannot match, such as abundant sources, easy development, environmental friendliness, and recycling. Generally speaking, new energy includes wind energy, water energy, tidal energy, solar energy, nuclear energy, etc. Among them, the potential of renewable energy mainly based on solar energy is huge. At the same time, solar energy is easy to collect and has no pollution. Its reserves can be used for tens of billions of years. , photovoltaic power generation is one of the important ways to utilize ...

Claims

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Application Information

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IPC IPC(8): C09B57/00H01G9/20
CPCY02E10/542
Inventor 贾海浪彭智杰李珊珊龚炳泉包政律关明云
Owner JIANGSU UNIV OF TECH
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