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Organic dye and application thereof in dye-sensitized solar cell

A technology for organic dyes and solar cells, applied to organic dyes and application fields in dye-sensitized solar cells, can solve the problem of high cost and achieve the effects of low cost, simple synthesis process and good light absorption capacity

Active Publication Date: 2013-01-30
CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an organic dye and its application in dye-sensitized solar cells in order to solve the problem of high cost of existing organic dyes due to the use of precious metals

Method used

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  • Organic dye and application thereof in dye-sensitized solar cell
  • Organic dye and application thereof in dye-sensitized solar cell
  • Organic dye and application thereof in dye-sensitized solar cell

Examples

Experimental program
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Effect test

Embodiment 1

[0017] Embodiment 1: the organic dye synthesis of chemical structural formula (II)

[0018]

[0019] Synthesis of Intermediate 2:

[0020] Add 10 grams of raw material 1, 29 grams of potassium carbonate and 200 milliliters of acetone into a 500 milliliter three-necked reaction flask, vacuumize the oil pump, add 32 grams of n-bromo-octane under the protection of argon to obtain a mixture, and heat the above mixture to reflux for 12 Cool to room temperature after 1 hour, add 200 milliliters of water to terminate the reaction, the organic phase that obtains after the reaction solution is extracted with chloroform is dried with sodium sulfate, filters, and the crude product that obtains after decompression spins off the filtrate uses sherwood oil as eluent and uses silica gel chromatography Column chromatography obtains 18.7 grams of intermediate 2, and the reaction yield is 96%;

[0021] NMR characterization data of Intermediate 2:

[0022] 1 H NMR (600 MHz, DMSO-d 6 ) δ: ...

Embodiment 2

[0054] Example 2: Dye-sensitized solar cells prepared from organic dyes of chemical structural formula (II)

[0055] TiO 2 The structural double-layer membrane electrode was soaked in a mixed solution of acetonitrile and tert-butanol (volume ratio 1:1) containing 150 micromoles per liter of dye (II) for 12 hours, and then the glass electrode spin-coated with nano-platinum was passed through a 35 micron thick hot melt ring with TiO 2 The structural double-layer film electrode is heated and sealed, and finally the electrolyte is injected into the gap between the two electrodes, which constitutes a dye-sensitized solar cell. figure 1 is a graph of photoelectric conversion efficiency and wavelength of the dye-sensitized solar cell prepared in Example 2 of the present invention; figure 2 It is a graph showing the relationship between current and voltage of the dye-sensitized solar cell prepared in Example 2 of the present invention. The performance structure of the dye-sensitiz...

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Abstract

The invention provides organic dye and the application of the organic dye in a dye-sensitized solar cell, belonging to the field of organic dye. The organic dye takes N-biphenyl substituted di-thienopyridine as a conjugate unit, and takes a thienopyridine structure unit as an electron-rich structure unit, so that the dye is better in optical absorptivity; and a N atom is connected with a long alkyl chain, so that the gathering of the dye can be preferably reduced, and the photovoltage of a device can be improved. The organic dye provided by the invention is simple in synthesis process, low in raw material cost, high in reaction yield, and easy to purify. According to the dye-sensitized solar cell prepared by the organic dye provided by the invention, the high voltage of 960 millivolts and the short-circuit current density of 13.53 milliamperes / square centimeter can be achieved, and the power conversion efficiency reaches 9.3%.

Description

technical field [0001] The invention relates to the technical field of organic dyes, in particular to an organic dye and its application in dye-sensitized solar cells. Background technique [0002] Among the renewable energy sources, solar energy is the most ideal clean energy source, and photoelectric conversion through solar cells is one of the main ways for human beings to utilize solar energy. In the field of solar cells, silicon solar cells occupy a relatively large market share due to their high conversion rate and mature technology. However, the raw materials of silicon solar cells are expensive, the production cost is high, and its photoelectric conversion efficiency is difficult to further improve. These defects severely limit development of silicon solar cells. In 1991, Professor Grötzel of the Swiss Federal Institute of Technology reported a high-efficiency dye-sensitized solar cell (Nature, 1991, 353, 737). After two decades of development, the current dye-sensi...

Claims

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Application Information

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IPC IPC(8): C09B57/00H01G9/20
CPCY02E10/542
Inventor 王鹏蔡宁许名飞张敏
Owner CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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