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Polyacid co-sensitization agent of dye-sensitized solar cell and preparation method

A dye-sensitized, polyacid compound technology, applied in the field of polyacid co-sensitizers, can solve the problems of restricting photon capture in the visible region, narrow absorption, hindering the photoelectric conversion efficiency of DSSC, etc., so as to improve the photoelectric conversion efficiency and solve the energy problem. , the effect of simple synthesis process

Inactive Publication Date: 2015-12-09
NORTHEAST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, photosensitizers mainly use ruthenium carboxylate compounds, but their absorption in the visible region is narrow, which limits the photon capture in the visible region and hinders the improvement of the photoelectric conversion efficiency of DSSC.

Method used

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  • Polyacid co-sensitization agent of dye-sensitized solar cell and preparation method
  • Polyacid co-sensitization agent of dye-sensitized solar cell and preparation method
  • Polyacid co-sensitization agent of dye-sensitized solar cell and preparation method

Examples

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Effect test

Embodiment 1

[0021] The molar ratio is 18:1:1:1.37:10000 Na 2 WO 4 2H 2 O, CuCl 2 2H 2 O, 1,10-phenanthroline, NH 4 VO 3 , mixed with distilled water in a beaker, stirred at room temperature for 0.5 hours, and the pH was 8.3; then the above solution was transferred to a reaction kettle, heated at 155°C for 135 hours, and then slowly cooled to room temperature at 5°C per hour; the green block crystals and washed with distilled water to obtain (hereinafter referred to as: compound 1 ). Its spectrum is as figure 2 , see the single crystal structure of polyacid compound figure 1 .

Embodiment 2

[0023] The molar ratio is 18:1:1:1.37:10000 Na 2 WO 4 2H 2 O, CuCl 2 2H 2 O, 1,10-phenanthroline, NH 4 VO 3 , mixed with distilled water in a beaker, stirred at room temperature for 1.0 hour, and the pH was 8.1; then the above solution was transferred to a reaction kettle, heated at 150°C for 100 hours, and then slowly cooled to room temperature at 5°C per hour; the green block crystals and washed with distilled water to obtain (hereinafter referred to as: compound 1 ). Its spectrum is as image 3 , see the single crystal structure of polyacid compound figure 1 .

Embodiment 3

[0025] The molar ratio is 18:1:1:1.37:10000 Na 2 WO 4 2H 2 O, CuCl 2 2H 2 O, 1,10-phenanthroline, NH 4 VO 3 , mixed with distilled water in a beaker, stirred at room temperature for 1.0 hour, and the pH was 8.5; then the above solution was transferred to a reaction kettle, heated at 160°C for 140 hours, and then slowly cooled to room temperature at 5°C per hour; the green and washed with distilled water to obtain (hereinafter referred to as: compound 1 ). Its spectrum is as Figure 4 , see the single crystal structure of polyacid compound figure 1 .

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Abstract

The invention discloses a polyacid co-sensitization agent of a dye-sensitized solar cell and a preparation method, and provides a novel polyacid compound. The molecular formula is C48H40Cu2N8O23V2W4, the structural formula is [Cu(Cl2H8N2)2]2[V2W4O19].4H2O, and the molecular weight is 2061.24. The synthesis process is simple, environment friendliness and safety are achieved, the polyacid compound can be used as the co-sensitization agent of the dye-sensitized solar cell, and compared with independent N719 sensitization, the photoelectric conversion efficiency of the solar cell is improved by more than 21%, and a new way is provided for solving energy problems.

Description

technical field [0001] The invention discloses a multi-acid co-sensitizer for dye-sensitized solar cells, and also provides a preparation method thereof, which belongs to the technical field of chemical synthesis. Background technique [0002] As an important part of dye-sensitized solar cells (DSSC), photosensitizer plays a vital role in photoelectric conversion efficiency. So far, photosensitizers mainly use ruthenium pyridine carboxylate compounds, but their absorption in the visible region is narrow, which limits the photon capture in the visible region and hinders the improvement of the photoelectric conversion efficiency of DSSC. Therefore, it is very important to study full-spectrum sensitizers or co-sensitizers. Polyacids (abbreviated as POMs in English) can be combined with organic groups to change the electronic characteristics and redox properties of polyacids and expand the spectral absorption range of polyacids. In addition, by changing the composition of poly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F1/08H01G9/042H01G9/20
CPCY02E10/542
Inventor 陈维林徐莎莎陈维超王恩波
Owner NORTHEAST NORMAL UNIVERSITY
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