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Quasi-solid-state dye sensitized nano crystal salar battery and manufacturing method thereof

A technology of solar cells and dye sensitization, which is applied in the field of dye-sensitized nanocrystalline solar cells, and can solve problems affecting the long-term stability of batteries, leakage, and volatilization of liquid electrolyte solvents

Inactive Publication Date: 2005-06-08
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the electrolyte of dye-sensitized nanocrystalline solar cells mainly contains I 3 - / I 2 Organic solvents such as acetonitrile for redox couples, but liquid electrolytes have problems of solvent volatilization and leakage, which seriously affect the long-term stability of batteries; all-solid electrolytes are mainly P-type inorganic semiconductors and organic hole transport materials, but all-solid electrolytes The electronic and ion conductivity of the electrolyte drops sharply, so the photoelectric conversion effect of the all-solid-state dye-sensitized nanocrystalline solar cell is not ideal

Method used

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  • Quasi-solid-state dye sensitized nano crystal salar battery and manufacturing method thereof
  • Quasi-solid-state dye sensitized nano crystal salar battery and manufacturing method thereof
  • Quasi-solid-state dye sensitized nano crystal salar battery and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1: Place the titanium dioxide nanocrystalline film electrode on 5×10 -4 Mole / liter N 3 Soak in the dye solution for 24 hours for sensitization. Then drop 0.1 mL of liquid electrolyte, the composition is 0.1 mol / liter I 2 , 0.1 mol / L LiI, 0.5 mol / L 4-tert-butylpyridine, 0.6 mol / L 1-methyl-3-propylimidazole iodide salt, and then put a piece of platinum-coated ITO glass on the dye-sensitized Dye-sensitized solar cells were assembled on the nano-titanium dioxide crystal film and measured. At 80mW / cm 2 The open-circuit photovoltage of the battery is 570mV and the short-circuit photocurrent is 10.7mA / cm under the white light irradiation. 2 , The fill factor is 0.62 and the energy conversion efficiency is 4.7%.

Embodiment 2

[0026] Example 2: Place the titanium dioxide nanocrystalline film electrode on 5×10 -4 Mole / liter N 3 Soak in the dye solution for 24 hours for sensitization. Then drop 0.1 mL of quasi-solid electrolyte, the composition is 0.1 mol / liter I 2 , 0.1 mol / L LiI, 0.5 mol / L 4-tert-butylpyridine, 0.6 mol / L 1-methyl-3-propylimidazole iodide salt, 0.05% (mass fraction) of mesoporous silica, and then A piece of platinum-plated ITO glass is placed on the dye-sensitized nanometer titanium dioxide crystal film to assemble the dye-sensitized solar cell and perform measurement. At 80mW / cm 2 The open-circuit photovoltage of the battery is 584mV and the short-circuit photocurrent is 6.9mA / cm under the white light irradiation. 2 , The fill factor is 0.68, and the energy conversion efficiency is 3.4%. See the photocurrent and photovoltage curves image 3 Shown.

Embodiment 3

[0027] Example 3: Place the titanium dioxide nanocrystalline film electrode on 5×10 -4 Mole / liter N 3 Soak in the dye solution for 24 hours for sensitization. Then drop 0.1 mL of quasi-solid electrolyte, the composition is 0.1 mol / liter I 2 , 0.1 mol / L LiI, 0.5 mol / L 4-tert-butylpyridine, 0.6 mol / L 1-methyl-3-propylimidazole salt, 3% (mass fraction) of mesoporous silica, and then add a piece of The platinum-plated ITO glass is placed on the dye-sensitized nano titanium dioxide crystal film, and the dye-sensitized solar cell is assembled and measured. At 80mW / cm 2 The open-circuit photovoltage of the battery is 587mV and the short-circuit photocurrent is 6.7mA / cm under the white light irradiation. 2 , The fill factor is 0.68, and the energy conversion efficiency is 3.4%. See the photocurrent and photovoltage curves Figure 4 Shown.

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Abstract

The invention relates to a dye sensitization nanometer crystal solar cell and its manufacturing method which is used the medium holes oxide gel as the quasi solid electrolyte. In the solar cell, the medium holes oxide quasi solid electrolyte is set to replace the liquid electrolyte at the surface of the wide-gap semiconductor nanometer crystal film absorbed the photosensitizer. The solar cell is utilized the medium holes oxide hole-channel structure to supply transmission channel for the anion. It can effectively solve the solvent leaking problem in the electrolyte at the condition that the photoelectric conversion efficiency of the cell is not sharply reduced.

Description

Technical field [0001] The invention belongs to the technical field of electrolyte materials for solar cells, and specifically relates to the use of mesoporous oxides as filling materials to construct dye-sensitized nanocrystalline solar cells. Compared with solar cells using traditional liquid electrolytes, the pore structure of mesoporous oxides can be used to provide transmission channels for anions, which effectively solves the leakage of solvents in the electrolyte without significantly reducing the photoelectric conversion efficiency of the battery. problem. Background technique [0002] With the vigorous development of modern industry, traditional fossil energy sources continue to deplete, and the resulting environmental pollution is also becoming increasingly serious. Therefore, how to use solar energy has become the focus of energy research by governments around the world, and the development of high-efficiency and low-cost solar cells is one of the important ways to use...

Claims

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Application Information

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IPC IPC(8): H01G9/20H01M14/00
CPCY02E10/542Y02P70/50
Inventor 李富友杨红黄春辉成云飞
Owner FUDAN UNIV
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