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Method for manufacturing dye sensitized nano crystal solar cell photo-anode membrane

A technology for solar cells and manufacturing methods, applied in electrode manufacturing, capacitor electrodes, and final product manufacturing, etc., can solve problems such as weak bonding between the film and the conductive glass substrate, between particles in the film, easy cracks in the film, and thin film pores. , to achieve the effect of low mass production cost, improved film uniformity, and excellent bonding

Inactive Publication Date: 2007-11-14
XI AN JIAOTONG UNIV
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  • Application Information

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Problems solved by technology

[0004] The preparation of this porous nanocrystalline TiO 2 The common method of film is the scrape coating method. Although the scrape coating method has obtained the highest conversion efficiency in the laboratory so far, the film-forming mechanism of this method determines the TiO 2 The bonding between the film and the conductive glass substrate and between particles in the film is weak, and crack defects are prone to occur in the film
And due to the use of surfactants, the film is also prone to cell defects

Method used

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  • Method for manufacturing dye sensitized nano crystal solar cell photo-anode membrane
  • Method for manufacturing dye sensitized nano crystal solar cell photo-anode membrane
  • Method for manufacturing dye sensitized nano crystal solar cell photo-anode membrane

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preparation example Construction

[0041] Nanostructured composite TiO 2 The preparation method of the powder is: the nanocrystalline TiO 2 Disperse in a solution containing organic matter to form a uniform slurry, then dry and crush to prepare TiO with nanostructure characteristics and an overall size in the order of microns and submicrons 2 powder.

[0042] Nanostructured composite TiO 2 The organic matter contained in the powder is in a solid state at room temperature, and is selected from organic carboxylic acid, polyethylene glycol, polyvinyl alcohol, polyacrylamide, polyvinylpyrrolidone, polyacrylic acid, polymethacrylic acid, two or both of the above A mixture of the above organic compounds.

[0043] The above-mentioned treatment is to remove the organic matter from the inside of the film by evaporation or decomposition, and is selected from heat treatment, UV irradiation treatment, microwave irradiation treatment, electron beam irradiation treatment or two or more methods thereof.

[0044] After ste...

Embodiment 1

[0047] Dissolve 4g of polyethylene glycol in 50mL of ethanol, and add to the solution containing 10g of P25 TiO under ultrasonic vibration 2 Suspension of the powder in 100 mL ethanol. After rotary evaporation and drying, grinding and sieving to obtain nanostructured composite TiO2 treated with polyethylene glycol 2 Powder, see Figure 2 and Figure 3.

[0048] Using this spray powder, TiO was prepared by vacuum cold spraying on FTO conductive glass 2 film. Typical vacuum cold spray parameters are: vacuum chamber pressure 0.23KPa; He is accelerating gas, flow rate 2L / min, pressure 1MPa. The cross-section and surface morphology of the film are shown in Figure 4 and Figure 5. For comparison, Figure 7 shows the surface morphology of the film prepared by the traditional scrape coating method. It can be found from the figure that this film has no defects such as cracks and pores.

[0049] The prepared film was heat-treated at 450°C for 30 min to remove organic matter. The surfa...

Embodiment 2

[0052] In the case described in Example 1, after removing the organic matter, the film was soaked in 0.05mol / L, 70°C TiCl 4 In the aqueous solution for 30 minutes, then heated to 500 ° C for 20 minutes, so as to treat TiO 2 Strengthening of connections between primary particles. Then according to the dye adsorption and battery assembly method of Example 1, the battery was assembled into a battery at AM1.5 (100mW / cm 2 ) under the xenon lamp light source to simulate sunlight, the measured short-circuit current density of the battery is 17mA / cm 2 , open circuit voltage 0.66V, energy conversion efficiency 6.5%, see Figure 8.

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Abstract

This invention discloses a dye-sensitized nano crystalline solar cell anode-film-manufacturing method, in which nano compound TiO2 powder is used as raw materials to deposit film on conductive glass by vacuum cold coating method and porous TiO2 film is formed through after treatment. The TiO2 film has channel structure with multiple sizes that is favourable to dye diffusing and adsorbing to interior of the film and the transferring of the electrolyte carrier in the film, especial for solid or quasi-solid electrolyte cell, the film is favourable to electrolyte diffusing into interior of the film.

Description

technical field [0001] The invention belongs to the field of solar cells, especially the technical field of dye-sensitized solar cells, and specifically relates to a method for manufacturing a photoanode film of a dye-sensitized nanocrystalline solar cell. Background technique [0002] Solar cells can directly convert solar energy into electrical energy, which is one of the main forms of solar energy utilization. Currently researched solar cells mainly include: silicon solar cells, compound semiconductor cells, polymer film solar cells and dye-sensitized nanocrystalline solar cells. Since Grtzel et al. reported on Nature in 1991 that the solar energy conversion efficiency of dye-sensitized solar cells (DSCs) was >7%, DSCs have received extensive attention. So far, the energy conversion efficiency of DSC has exceeded 11%. [0003] DSC is composed of photoanode, counter electrode and electrolyte. Porous TiO deposited on conductive glass substrates 2 The membrane absorb...

Claims

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Application Information

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IPC IPC(8): H01L31/18H01L51/48H01L21/28H01G9/20H01G9/04H01M14/00H01M4/04
CPCY02E60/12Y02E10/542Y02E10/549Y02E60/10Y02P70/50
Inventor 李长久范圣强杨冠军
Owner XI AN JIAOTONG UNIV
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