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Solar cell adopting organic/inorganic nano doped quasi-solid state electrolyte, and its preparation method

A solar cell and inorganic nanotechnology, applied in the field of solar cells, can solve problems such as affecting the stability of solar cells, easy agglomeration of nanoparticles, and achieve the effects of solving compatibility, solving phase separation, and prolonging service life

Inactive Publication Date: 2007-06-06
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The only nanoparticle additives that have been publicly reported are SiO 2 Nanoparticles, SiO 2 Nanoparticles provide channels for anion transport, forming a network scaffold material, but at the same time SiO 2 Nanoparticles are prone to agglomeration, thus affecting the stability of solar cells

Method used

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  • Solar cell adopting organic/inorganic nano doped quasi-solid state electrolyte, and its preparation method
  • Solar cell adopting organic/inorganic nano doped quasi-solid state electrolyte, and its preparation method
  • Solar cell adopting organic/inorganic nano doped quasi-solid state electrolyte, and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: A titanium dioxide nanocrystalline film electrode is placed in 5 * 10 -5 mol / L N3 dye in ethanol solution for 48 hours to sensitize. Add dropwise 0.1 ml containing 0.1 mol / l I 2, 0.1 mol / L LiI, 0.5 mol / L 4-tert-butylpyridine, 0.6 mol / L 1-methyl-3-propyl imidazolium salt in acetonitrile / propylene carbonate (volume ratio=1:1) solution, then A piece of platinum-coated ITO glass is placed on the dye-sensitized nano-TiO2 crystal film and clamped with a clamp for measurement. at 100mW / cm 2 Under white light irradiation, the open circuit photovoltage of the battery is 634mV, and the short circuit photocurrent is 17.6mA / cm 2 , fill factor 0.64, energy conversion efficiency 7.2%, half-life 125 hours.

Embodiment 2

[0029] Embodiment 2: A titanium dioxide nanocrystalline film electrode is placed in 5 * 10 -4 mol / L N3 dye in ethanol solution for 12 hours to sensitize. Add dropwise 0.1 ml containing 0.1 mol / l I 2 , 0.1 mol / liter LiI, 0.5 mol / liter 4-tert-butylpyridine, 0.6 mol / liter 1-methyl-3-propylimidazolium salt, 1% (mass fraction) sodium dodecylbenzenesulfonate / Nano-TiO 2 Acetonitrile / propylene carbonate (volume ratio = 1:1) solution, and then a piece of platinum-coated ITO glass was placed on the dye-sensitized nano-titanium dioxide crystal film, and clamped with a clamp for measurement. at 100mW / cm 2 Under white light irradiation, the open circuit photovoltage of the electrode is 649mV, and the short circuit photocurrent is 16.2mA / cm 2 , fill factor 0.65, energy conversion efficiency 6.7%. The half-life is 260 hours.

Embodiment 3

[0030] Embodiment 3: A titanium dioxide nanocrystalline film electrode is placed in 5 * 10 -4 mol / L N3 dye in ethanol solution for 24 hours to sensitize. Add dropwise 0.1 ml containing 0.1 mol / l I 2 , 0.1 mol / liter LiI, 0.5 mol / liter 4-tert-butylpyridine, 0.6 mol / liter 1-methyl-3-propylimidazolium salt, 2% (mass fraction) sodium dodecylbenzenesulfonate / Nano-TiO 2 Acetonitrile / propylene carbonate (volume ratio = 1:1) solution, and then a piece of platinum-coated ITO glass was placed on the dye-sensitized nano-titanium dioxide crystal film, and clamped with a clamp for measurement. at 100mW / cm 2 Under white light irradiation, the open circuit photovoltage of the electrode is 641mV, and the short circuit photocurrent is 14.0mA / cm 2 , fill factor 0.70, energy conversion efficiency 6.3%. The half-life is 370 hours.

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Abstract

Organic / inorganic nano hybridization electrolyte instead of liquid electrolyte assembled on surface, which adsorbs photosensitizer, of nano crystal film of semiconductor with broad forbidden band solves encapsulation issue of liquid electrolyte. Under precondition of not lowering photoelectricity conversion efficiency of solar cell distinctly, the invented solar cell prolongs service life greatly.

Description

technical field [0001] The invention belongs to the technical field of solar cells, in particular to a dye-sensitized nanocrystalline solar cell using an organic / inorganic nano-hybrid quasi-solid electrolyte material and a preparation method thereof. The organic / inorganic nano-hybrid electrolyte assembled on the surface of the wide-bandgap semiconductor nanocrystal film that absorbs the photosensitizer can replace the liquid electrolyte, which can greatly prolong the dyeing of solar cells without significantly reducing the photoelectric conversion efficiency of the battery. service life. Background technique [0002] The petrochemical resources that can be exploited at present can only be maintained until around 2020, and the energy crisis is an urgent problem that needs to be solved. Solar energy is an inexhaustible green resource and the best way to solve my country's energy structure and environmental problems. The development and production of solar cells have broad ap...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/04H01G9/20H01M14/00
CPCY02E10/50
Inventor 李富友夏江滨黄春辉杨红
Owner FUDAN UNIV
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