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Ruthenium dye containing diazafluorene ligand and dye-sensitized solar cell prepared thereby

A dye and nitrogen fluorene technology, applied in the field of dye-sensitized solar cells, can solve the problem of long route

Active Publication Date: 2012-09-19
CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, organic ruthenium dyes have a long route in ligand synthesis, and it is difficult for organic ruthenium dyes with traditional structures to make breakthroughs in photoelectric conversion efficiency.

Method used

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  • Ruthenium dye containing diazafluorene ligand and dye-sensitized solar cell prepared thereby
  • Ruthenium dye containing diazafluorene ligand and dye-sensitized solar cell prepared thereby
  • Ruthenium dye containing diazafluorene ligand and dye-sensitized solar cell prepared thereby

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Embodiment 1: the preparation of the ruthenium dye that contains the dinitrofluorene ligand of chemical structural formula I

[0055] The synthetic route is as follows:

[0056]

[0057] 0.2106g (0.344mmol) dichlorobis (4-methylisopropylphenyl) ruthenium (II) [RuCl2 (p-cymene) 2 ] 2and 0.167g (0.688mmol) of 4,4'-dicarboxylic acid-2,2'-bipyridine were dissolved in 40mL of N,N-dimethylformamide, heated to 70°C for 4 hours, and the reaction system was protected by argon; Then 0.27g (0.688mmol) of 4,4'-2(hexyl-2-ethyl)dizofluorene was added to the reaction system, heated to 140°C for 4 hours, and then 2.09g (27.50mmol) of thiocyanate was added Acid-amine reaction for 4 hours, remove the solvent N,N-dimethylformamide, add 30mL of water, and obtain a solid by suction filtration, wash the solid with water and ether and dry it in a vacuum drying oven, and the dried product is dissolved in In methanol solution of 0.05 mol / liter NaOH, purify by column chromatography, concen...

Embodiment 2

[0059] Embodiment 2: Preparation of dye-sensitized solar cells with ruthenium dyes containing dinitrofluorene ligands of chemical structural formula I

[0060] The photoanode (light-absorbing layer) of the dye-sensitized solar cell adopts a mesoporous double layer, and the underlying film is made of 20nm TiO 2 Composed of nanocrystals, the thickness is 7μm, and the upper film thickness is made of 400nm TiO 2 Composed of light-scattering particles with a thickness of 5 μm. Preparation of TiO 2 Nanocrystalline and TiO 2 For the method of nanostructured double-layer film electrodes, see the article (Wang P. et al., Enhance the Performance of Dye-Sensitized Solar Cells by Co-grafting AmphiphilicSensitizer and Hexadecylmalonic Acid on TiO 2 Nanocrystals, J. Phys. Chem. B., 107, 2003, 14336).

[0061] Prepared TiO 2 The nanostructured double-layer membrane electrode is soaked in acetonitrile / tert-butanol containing 300 μM of the dye of structural formula I and 300 μM of Cheno (...

Embodiment 3

[0063] Example 3: Dye-sensitized solar cells prepared from ruthenium dyes containing dinitrofluorene ligands of structural formula II

[0064]

[0065] With the ruthenium dye containing the dinitrofluorene ligand of structural formula II, the raw material 4,4'-diethylbizofluorene is synthesized with the steps and conditions of Example 1.

[0066] The dye-sensitized solar cell was prepared according to the method of Example 2, and the parameters of the obtained dye-sensitized solar cell are shown in the attached table of the specification.

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Abstract

The invention relates to ruthenium dye containing diazafluorene ligand and a dye-sensitized solar cell prepared thereby. The ruthenium dye contains the organic diazafluorene ligand; and compared with the traditional bipyridine ligand, the ruthenium dye has simpler syntheticroute, and is suitable for large-scale practical application. When the ruthenium dye is used as a photosensing material to be applied to the dye-sensitized solar cell, the short circuit current Jsc ranges from 14.75 to 15.02 mA / cm2, the open-circuit voltage Voc ranges from 681 to 696 mV, the packing factor ff ranges from 0.66 to 0.70, and the photoelectric transformation efficiency ranges from 6.8 to 7.0 percent, under the detection of standard AM1.5 simulated solar irradiation.

Description

technical field [0001] The invention relates to a ruthenium dye containing a dinitrofluorene ligand and a dye-sensitized solar cell prepared therefrom. Background technique [0002] Among the many renewable energy sources, solar energy is undoubtedly the most ideal clean energy source, which can fully meet the needs of human production and life. Among solar cells, silicon solar cells occupy the main market share of solar cells due to their high conversion rate and mature technology. However, silicon solar cells have high production costs and difficulties in improving cell efficiency. Raw materials are expensive and difficult to popularize. [0003] In 1991, the Swiss Federal Institute of Technology The professor reported the high-efficiency dye-sensitized solar cell (Nature 1991, 353, 737). After more than ten years of continuous research, the current dye-sensitized solar cell has approached the photoelectric conversion efficiency of silicon cells. More importantly, the m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B57/10H01G9/20H01L51/42H01L51/46
CPCY02E10/542Y02E10/549
Inventor 蔡宁陈利民许名飞白羽王鹏
Owner CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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