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

A solar cell and dye sensitization technology, which is applied in the field of dye-sensitized nanocrystalline solar cells, can solve the problems of all-solid electrolyte electronic and ion conductivity decline, leakage, liquid electrolyte solvent volatilization, etc.

Inactive Publication Date: 2008-04-23
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

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: Titanium dioxide nanocrystalline film electrode is placed in 5 * 10 -4 mol / L N 3 Sensitize by soaking in the dye solution for 24 hours. Then drop 0.1mL liquid electrolyte, the composition is 0.1mol / L I 2 , 0.1 mol / L LiI, 0.5 mol / L 4-tert-butylpyridine, 0.6 mol / L 1-methyl-3-propylimidazolium iodide, and then a piece of platinum-coated ITO glass was placed on the dye-sensitized Dye-sensitized solar cells were assembled on the nano-titanium dioxide crystal film and measured. at 80mW / cm 2 Under white light irradiation, the open circuit photovoltage of the battery is 570mV, and the short circuit photocurrent is 10.7mA / cm 2 , The fill factor is 0.62, and the energy conversion efficiency is 4.7%.

Embodiment 2

[0026] Embodiment 2: Titanium dioxide nanocrystalline film electrode is placed in 5 * 10 -4 mol / L N 3 Sensitize by soaking in the dye solution for 24 hours. Then drop 0.1mL quasi-solid electrolyte, the composition is 0.1mol / L I 2 , 0.1 mol / L LiI, 0.5 mol / L 4-tert-butylpyridine, 0.6 mol / L 1-methyl-3-propylimidazolium iodide, 0.05% (mass fraction) of mesoporous silica, and then A piece of platinum-coated ITO glass is placed on the dye-sensitized nano-titanium dioxide crystal film, and a dye-sensitized solar cell is assembled and measured. at 80mW / cm 2 Under white light irradiation, the open circuit photovoltage of the battery is 584mV, and the short circuit photocurrent is 6.9mA / cm 2 , The fill factor is 0.68, and the energy conversion efficiency is 3.4%. The photocurrent and photovoltage curves are shown in image 3 shown.

Embodiment 3

[0027] Embodiment 3: Titanium dioxide nanocrystalline film electrode is placed in 5 * 10 -4 mol / L N 3 Sensitize by soaking in the dye solution for 24 hours. Then drop 0.1mL quasi-solid electrolyte, the composition is 0.1mol / L I 2 , 0.1 mol / liter LiI, 0.5 mol / liter 4-tert-butylpyridine, 0.6 mol / liter 1-methyl-3-propylimidazolium salt, 3% (mass fraction) of mesoporous silica, and then a piece of The platinum-coated 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 Under white light irradiation, the open circuit photovoltage of the battery is 587mV, and the short circuit photocurrent is 6.7mA / cm 2 , The fill factor is 0.68, and the energy conversion efficiency is 3.4%. The photocurrent and photovoltage curves are shown in Figure 4shown.

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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 construction of dye-sensitized nanocrystalline solar cells using mesoporous oxides as filling materials. Compared with solar cells using traditional liquid electrolytes, the pore structure of mesoporous oxides can be used to provide channels for anions to transport, effectively solving the leakage of solvents in the electrolyte without significantly reducing the photoelectric conversion efficiency of the cells. question. Background technique [0002] With the vigorous development of modern industry, the traditional fossil energy is being exhausted, and the resulting environmental pollution is also becoming more and more serious. Therefore, how to utilize solar energy has become the focus of energy research by governments all over the world, and the development of high-efficiency and low-cost solar cells is one of the important ways to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/04H01M14/00H01G9/20
CPCY02E10/542Y02P70/50
Inventor 李富友杨红黄春辉成云飞
Owner FUDAN UNIV
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