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X-type double-anchored dye sensitizer and its preparation method and application

A dye sensitizer, double anchoring technology, applied in the field of solar cells, can solve the problems of single anchoring group reducing charge transport effect, dye desorption, easy molecular aggregation, etc., to achieve good guiding significance, increase adsorption capacity, improve The effect of charge transfer capability

Active Publication Date: 2020-02-14
JIANGSU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the conversion efficiency of polypyridine ruthenium dye N719 reached 11.18%, and the conversion efficiency of zinc porphyrin dye SM315 reached 13.0%. The development of dyes, and pure organic dyes have the advantages of a wide variety, easy modification of molecular structure, low price, good plasticity and easy degradation. In recent years, the development of such dyes has become a research hotspot
Generally, pure organic dyes will be designed into a D-π-A structure, but this linear structure is prone to molecular aggregation behavior. In addition, a single anchoring group will not only reduce the charge transport effect, but also the dye is easily removed from the anode surface. desorption, so it is of great scientific significance to develop new and efficient dye sensitizers

Method used

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  • X-type double-anchored dye sensitizer and its preparation method and application
  • X-type double-anchored dye sensitizer and its preparation method and application
  • X-type double-anchored dye sensitizer and its preparation method and application

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Embodiment 1

[0029] What this embodiment prepares is a kind of X-type double-anchored dye sensitizer, and the synthesis route is as attached figure 1 Shown, the reaction steps are as follows:

[0030] (1) Synthesis of compound 2:

[0031] At room temperature, compound 1 (4,4'-dibromobenzil) (5.00g, 13.59mmol), 4-n-pentylphenylboronic acid (6.52g, 33.97mmol), potassium carbonate (7.51 g, 54.34mmol) into a three-necked flask, followed by adding solvent N,N-dimethylformamide (40mL), replacing nitrogen with a tee, and adding a catalytic amount of Pd(PPh 3 ) 4 (0.78g, 0.68mmol). The reaction solution was heated to 90°C for 12 hours, then cooled to room temperature, water was added to the reaction solution and extracted with dichloromethane (150 mL), the organic phase was dried with anhydrous sodium sulfate, filtered and then rotary evaporated under reduced pressure, and the residue was washed with Purified by 200-300 mesh silica gel column chromatography (petroleum ether / ethyl acetate=10 / 1)...

Embodiment 2

[0053] Solar cell device assembly was performed on an X-type double-anchored dye sensitizer synthesized in Example 1. Printing of TiO on cleaned conductive substrates by screen printing 2 slurry, and then after drying, high temperature sintering and other procedures, TiO can be obtained 2 nanocrystalline film. A small hole with a diameter of about 0.8 mm is punched on the conductive glass substrate of the counter electrode to inject the electrolyte, and then the H 2 PtCl 6 (0.02M isopropanol solution) solution was spin-coated on a cleaned conductive glass substrate, and sintered at high temperature to obtain a Pt counter electrode. Sensitized TiO 2 The electrode and the Pt counter electrode are packaged with a heat-sealing film, and the electrolyte is injected by vacuum backfilling, and then the hole is sealed to obtain a DSSCs battery. The photoelectric conversion efficiency property test was carried out on the assembled battery device, and the conversion efficiency was ...

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Abstract

The invention belongs to the technical field of solar cells, and specifically relates to an X-type double-anchored dye sensitizer and its preparation method and application. The molecular structure of the dye sensitizer is shown in formula A. The morphine structure is used as the matrix, and the electron donor end is modified with alkylbenzene containing a long carbon chain. The purpose is to inhibit the electron recombination and increase the solubility of the dye molecule. The X-type dye molecule is constructed with bisbenzoic acid as the anchor group to improve the stability of dye adsorption. properties, while increasing the adsorption capacity of dye molecules. The dye can be synthesized by simple suzuki coupling, condensation, bromination, hydrolysis and other conventional reactions, and the prepared dye molecule has good photoelectric conversion performance when used in solar cells, which has great significance for the design of new dye sensitizers Good instructive sense.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and in particular relates to an X-type double-anchored dye sensitizer and its preparation method and application. Background technique [0002] The development of the times and the advancement of science and technology have brought convenience to people's lives, but they have also caused serious environmental pollution and energy crises. At present, how to effectively develop new energy to replace traditional fossil energy is the world's One of the main problems facing countries. New energy sources include wind energy, water energy, tidal energy, geothermal energy, nuclear energy and solar energy, etc. Among them, solar energy has many advantages such as extremely abundant reserves, convenient collection, clean and pollution-free, etc. The development and utilization of solar energy has always been the research of scientists hotspot. Photovoltaic power generation is currently one of the mai...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D241/42C09B57/00H01G9/20H01G9/042
CPCC09B57/00H01G9/2059Y02E10/542
Inventor 贾海浪陈宇超胡赛琳秦陆丰纪亮关明云
Owner JIANGSU UNIV OF TECH
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