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Preparation method for laminated photo-anode film of dye-sensitized solar cell

A technology of solar cells and dye sensitization, applied in the research field of nanocrystalline films of dye-sensitized solar cells, to achieve the effect of tight bonding and improved service life

Inactive Publication Date: 2009-09-02
IRICO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ultrafast experimental and theoretical studies of the charge transfer process have shown that the charge transfer efficiency of simple physisorbed states is much smaller than that of chemically bonded adsorbed states

Method used

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  • Preparation method for laminated photo-anode film of dye-sensitized solar cell
  • Preparation method for laminated photo-anode film of dye-sensitized solar cell
  • Preparation method for laminated photo-anode film of dye-sensitized solar cell

Examples

Experimental program
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Effect test

Embodiment 1

[0030] (1) Preparation of dense TiO 2 film layer

[0031] Stir tetrabutyl titanate and absolute ethanol evenly at a volume ratio of 1:4. During the stirring process, add 1 volume of dilute nitric acid aqueous solution with pH = 1, and then slowly add 1 volume of pure water, continue stirring for 60 minutes, and let it stand for a while. into TiO 2 Sol. The TiO that will be configured 2 The sol was spin-coated on the FTO conductive glass substrate at a speed of 2000r / min, dried at 80°C, put into a muffle furnace and sintered at 450°C for 30min at a heating rate of 4-5°C / min, and cooled naturally. dense nanocrystalline TiO 2 Thin film, transparent film, about 20-100nm thick.

[0032] (2) Preparation of porous TiO 2 film layer

[0033] Place the cleaned and dried FTO glass on the conductive surface, stick around it with 3M white tape to form a frame with a size of 0.5mm×0.5mm, and wrap the TiO2 prepared in step a with a glass rod. 2 The slurry is dripped on one end of the t...

Embodiment 2

[0037] (1) Preparation of dense TiO 2 film layer

[0038] Using Line-420 magnetron sputtering apparatus, more than 99.99% pure titanium target, filled with oxygen, the sputtering power is 300W, O 2 The gas flow rate is 10 sccm, and the protective gas Ar gas flow rate is 30 sccm. During sputtering, the vacuum degree was 2.0 Pa, the substrate temperature was 180° C., and the sputtering time was 1.5 hours. Annealed at 450°C for 30 minutes in air to form dense nanocrystalline TiO prepared by magnetron sputtering 2 Thin film, film thickness about 70nm.

[0039] (2) Preparation of porous TiO 2 film layer

[0040] The porous layer was printed by screen printing. Fine stainless steel mesh with a mesh size of 250 and an effective unit area of ​​20mm×8mm. After printing once, dry it, then print it a second time, repeat printing three times, and then anneal in a muffle furnace at 450°C for 30 minutes to form porous TiO. 2 The film layer has a film thickness of about 16 μm.

[004...

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Abstract

The invention discloses a preparation method for laminated photo-anode film of dye-sensitized solar cell. A dense film can be prepared by adopting a magnetron sputtering method and a sol-gel spin-coating method, and the quality of the dense film is controlled by controlling magnetron sputtering parameters or the preparation of TiO2 colloid and the rotating speed of spin coating; nano TiO2 grain of small grain diameter (less than 8nm) is formed on the surface of porous nano TiO2 layer film by means of a liquid-phase chemical deposition method; and dye adsorption of the photo-anode film is increased by means of unsaturated bond on the surface of the nano TiO2 of small grain diameter. When the TiO2 photo anode prepared by the method is applied in a dye-sensitized solar cell, the cell has higher photoelectric conversion efficiency and the device has longer service life.

Description

technical field [0001] The invention belongs to the research field of dye-sensitized solar cell nanocrystalline film, and relates to a laminated TiO 2 Membrane preparation method and porous TiO 2 The method of coating surface modification, the prepared TiO 2 The film was used as a dye-sensitized solar cell photoanode. Background technique [0002] With the aggravation of the global energy crisis and environmental pollution, how to utilize clean, pollution-free, and unrestricted solar energy resources has become a worldwide research hotspot. Among various new solar cells, dye-sensitized solar cells are becoming more and more popular due to their high theoretical conversion efficiency, simple process, good transparency, small dependence on temperature and incident light angle, less energy consumption in the preparation process, and low cost. has received more and more attention. [0003] At present, the photoelectric conversion efficiency of dye-sensitized solar cells can ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/004H01G9/04H01G9/20H01M14/00H01L51/48
CPCY02E10/542Y02E10/549Y02P70/50
Inventor 李少彦
Owner IRICO
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