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Dye sensitization solar cell based on titanic oxide nano bar light scattering thin film electric pole and its preparing method

A solar cell, titanium dioxide technology, applied in photosensitive equipment, photovoltaic power generation, electrolytic capacitors and other directions, can solve the problems of short circuit of battery and enlarged pores of photoanode film, and achieve the effect of simple operation, easy industrial production and high light scattering performance.

Active Publication Date: 2008-03-12
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(3) The battery does not add dense TiO 2 Thin films, conductive substrates directly bonded with nanorod-doped TiO 2 photoanodic thin film
Due to the addition of nanorods, the pores in the photoanode film are enlarged, and the redox electrolyte is more likely to directly contact the conductive substrate to cause a short circuit in the battery.

Method used

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  • Dye sensitization solar cell based on titanic oxide nano bar light scattering thin film electric pole and its preparing method
  • Dye sensitization solar cell based on titanic oxide nano bar light scattering thin film electric pole and its preparing method
  • Dye sensitization solar cell based on titanic oxide nano bar light scattering thin film electric pole and its preparing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Clean the surface of the conductive substrate. Use indium tin oxide conductive glass as the conductive substrate, use ethanol / acetone mixed solvent to ultrasonically clean the surface of the conductive substrate for 15 minutes, then put it into deionized water with detergent for ultrasonic cleaning for 15 minutes, then put it into deionized water for 15 minutes and rinse it three times Finally, place the conductive substrate in a clean bench and dry it with an infrared lamp.

[0041] (2) Preparation of titanium precursor solution: 3 mL of tetraisopropyl titanate was dissolved in 100 mL of petroleum ether to prepare a tetraisopropyl titanate petroleum ether solution with a concentration of 3% by volume.

[0042] (3) Dense TiO 2 Preparation of primary semi-finished products for thin film electrodes. Tape both sides of the washed and dried conductive substrate to leave a blank portion for the lead electrodes. Then immersed in a 3% titanium precursor solution, soaked...

Embodiment 2

[0053] According to the method in Example 1, except that the following steps are modified, other steps are identical.

[0054] When preparing the titanium precursor solution, 7 mL of tetrabutyl titanate was dissolved in 100 mL of cyclohexane to prepare a 7% tetrabutyl titanate cyclohexane solution by volume.

[0055] When preparing titanium dioxide small particle colloids, heat them in a titanium autoclave at 230°C for 14 hours to obtain TiO with a particle size of 30nm and a final solid content of 20%. 2 Colloidal small particles.

[0056] During the preparation of titanium dioxide nanorods, after ultrasonication at 300W for 1h, the temperature was kept in a 120°C hydrothermal kettle for 36h, and the lower sediment was kept in a muffle furnace at 550°C for 2h.

[0057] TiO2 nanorod light-scattering thin film electrode preparation, TiO 2 The weight percentage of the nanorods and the small titanium dioxide particles is 20%. The first layer of dense TiO 2 The thickness of th...

Embodiment 3

[0059] According to the method in Example 1, except that the following steps are modified, other steps are identical.

[0060] When preparing the titanium precursor solution, 1 mL of tetraisopropyl titanate was dissolved in 100 mL of n-butyl ether to prepare a 1% tetraisopropyl titanate n-butyl ether solution.

[0061] When preparing titanium dioxide small particle colloids, heat it in a titanium autoclave at 230°C for 12 hours to obtain TiO with a particle size of 25nm and a final solid content of 15%. 2 Colloidal small particles.

[0062] During the preparation of titanium dioxide nanorods, after ultrasonication at 400W for 3h, they were placed in a 120°C hydrothermal kettle for 48h, and the lower layer of sediment was kept at a constant temperature for 2h in a muffle furnace at 500°C.

[0063] When the titanium dioxide nanorod light-scattering film electrode is prepared, the weight percentage of the nanorod and the titanium dioxide small particle is 15%. The first layer o...

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Abstract

A dye sensitize solar battery based on the light scattering membrane electrode of the titanium dioxide Nano Rods is provided, which belongs to technical field of solar battery manufacturing. The invention comprises light anode, electrolyte solution and counter electrode, which is characterized in that the said light anode includes in turn the first layer closely connected with the conducting fundus and the second layer contacted with the first layer. The first layer is a dense TiO2 thin membrane formed by the TiO2 particles of 2 to 5 nm in grain diameter, while the second layer is a Nano Rods thin membrane formed by the TiO2 tiny particles of 5 to 60 nm in grain diameter and Nano Rods with diameter of 6 to 11 nm and length of 90 to 450. The mirror face diascoptic lighting intensity is obviously weakened while the diffuse transmission light intensity is increased in the infrared band and near infrared band of 600 to 900. The first layer is 50 to 15 nm in thickness while the second layer is 2 to 12 micron in thickness. The dye sensitize solar battery is characterized in high light scattering property, simple preparation method and easy operation.

Description

technical field [0001] The invention belongs to the technical field of solar cell manufacturing, in particular to the manufacturing technology of dye-sensitized solar cells. Background technique [0002] Dye-sensitized solar cells are mainly composed of three parts: photoanode, electrolyte solution and counter electrode. The light absorption ability of the photoanode is an important factor affecting the photoelectric conversion efficiency of this type of solar cell, and its main body is titanium dioxide (TiO2) interconnected into a porous network structure. 2 ) nanocrystal thin film, because the titanium dioxide nanocrystal can only absorb ultraviolet light and the absorption rate is only 30%, so the titanium dioxide nanocrystal is sensitized by the dye to improve the light absorption efficiency. Currently widely used ruthenium dyes can efficiently absorb visible light at 400-600nm, but their light-absorbing ability in the red and near-infrared bands (600-900nm) is seriousl...

Claims

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Application Information

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IPC IPC(8): H01L31/04H01L31/0224H01L31/18H01L51/42H01L51/44H01L51/46H01L51/48H01G9/20H01G9/04H01G9/042H01G9/048H01M14/00
CPCY02E10/542Y02E10/549Y02P70/50
Inventor 邱勇马玉涛王立铎吴骅
Owner TSINGHUA UNIV
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