Light anode for dye sensitization solar battery and preparation method thereof

A technology for solar cells and dye sensitization, which is applied in the field of photoanode of dye-sensitized solar cells and its preparation, can solve the problems of short lifespan of excited states, influence energy transmission efficiency, etc. The effect of reducing electron loss

Inactive Publication Date: 2009-01-28
IRICO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, due to the short lifetime of the excited state of the dye (usually 10 -8 ~10 -9 ), so the degree of its combination with the electrode affects the efficiency of energy transfer

Method used

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  • Light anode for dye sensitization solar battery and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0017] TiO with a particle size of 2 nm and a thickness of 50 μm 2 Put the porous film into a mixed solution of tetraethyl orthosilicate and cyclohexane with a volume ratio of 1:50, add 10 drops of surfactant NP-40 (nonylphenol polyoxyethylene ether), mix well and soak for 20 minutes , add ammonia water according to 70% of the volume of ethyl orthosilicate, soak at room temperature for 12 hours, add silane coupling agent KH550 (γ-aminopropyltriethoxysilane) according to 70% of the volume of ethyl orthosilicate, and then react 12 hours, then washed with acetone, and dried in a drying oven at 80°C for 30 minutes. The modified TiO 2 Nanoporous film at 3.5×10 -3 After soaking in mol / L N3 ethanol solution for 12 hours, take it out and dry it in the air, use iodine / lithium iodide electrolyte, platinum-plated conductive glass as the counter electrode, and assemble it into a battery. The transparent conductive glass may be indium-doped tin dioxide glass or fluorine-doped tin dioxid...

Embodiment 2

[0019] The particle size is 100nm, and the ZnO porous film with a thickness of 1 μm is put into a mixed solution of tetraethyl orthosilicate and cyclohexane with a volume ratio of 1:10, and 2 drops of surfactant NP-40 (nonylphenol polyoxyethylene ether), mix well and soak for 60 minutes, add ammonia water according to 40% of the volume of tetraethyl orthosilicate, soak at room temperature for 6 hours, add silane coupling agent KH550 (γ-aminopropyl Triethoxysilane), reacted for another 24 hours, then washed with acetone, and dried in a drying oven at 80°C for 30 minutes. The modified ZnO nanoporous film was placed at 3.5×10 -5 After soaking in mol / L N3 ethanol solution for 1 hour, take it out and dry it in the air, use iodine / lithium iodide electrolyte, platinum-plated conductive glass as the counter electrode, and assemble it into a battery.

Embodiment 3

[0021] TiO with a particle size of 50 nm and a thickness of 30 μm 2 Put the porous film into a mixed solution of tetraethyl orthosilicate and cyclohexane with a volume ratio of 1:30, add 5 drops of surfactant, mix well, soak for 30 minutes, and add 50% of the volume of tetraethyl orthosilicate Ammonia, soak at room temperature for 10 hours, add silane coupling agent KH550 (γ-aminopropyltriethoxysilane) according to 60% of the volume of tetraethoxysilane, react for another 20 hours, then wash with acetone, and place in a dry box Dry at 80°C for 30 minutes. Modified TiO 2 Porous film at 3.5 x 10 -4 After soaking in the organic solution of mol / L dye for 6 hours, take it out and dry it in the air, use iodine / lithium iodide electrolyte, and platinum-plated conductive glass as the counter electrode, and assemble it into a battery.

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Abstract

The invention relates to a dye sensitization solar cell light anode and a preparation method thereof. The light anode is characterized in that chemical modification for the dye sensitization solar cell light anode improves the sensitization effect of the dye on the light anode, thereby improving the photoelectric conversion efficiency of the cell. The concrete realization method is to carry out the surface modification of light anode nano crystal through nano SiO2, carry out functionalization, and absorb the dye. The modification of a nano SiO2 layer inhibits the surface state of a nano crystalline film and improves the photoelectric conversion performance of the cell; and simultaneously the surface functionalization increases the absorption amount of the dye, thereby effectively improving the photoelectric conversion efficiency of the solar cell.

Description

technical field [0001] The invention relates to a photoanode of a dye-sensitized solar cell and a preparation method thereof. Background technique [0002] With the increasing severity of the global energy crisis, people are eager to find a sustainable clean energy source. Solar energy, as an inexhaustible natural energy source, has increasingly attracted the attention of countries all over the world. Compared with traditional silicon solar cells, dye-sensitized solar cells have low cost and simple fabrication, and have become a research hotspot of scholars from all over the world. [0003] Dye-sensitized nano-thin film solar cells are mainly composed of the following parts: transparent conductive glass, nano-TiO 2 Porous films, dye-sensitized layers, electrolytes and counter electrodes. The working principle of dye-sensitized solar cells is: the dye molecules in the dye-sensitized layer transition from the ground state to the excited state after absorbing sunlight; the e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/20H01G9/04H01G9/08H01M14/00H01L51/44H01L51/48
CPCY02E10/542Y02E10/549
Inventor 李德娜
Owner IRICO
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