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Method for preparing solar cell photo-anode

A solar cell and photoanode technology, applied in the field of solar cells, can solve the problems of low light collection efficiency, high processing cost, and long cycle of products, and achieve the effect of shortening the preparation cycle and reducing costs

Inactive Publication Date: 2012-09-05
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the shortcomings of high processing cost, long cycle and low product light collection efficiency in the prior art, the present invention proposes a method for preparing a photoanode of a solar cell

Method used

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  • Method for preparing solar cell photo-anode
  • Method for preparing solar cell photo-anode
  • Method for preparing solar cell photo-anode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] This embodiment is a method for preparing a solar cell photoanode.

[0037] The preparation process of this embodiment is as follows:

[0038] Step 1, processing the titanium foil substrate: cutting the titanium foil into strips of 1 cm×5 cm, polishing, and ultrasonic cleaning with acetone, absolute ethanol and deionized water for 5 minutes each; the ultrasonic power is 200 watts.

[0039] Step 2, preparing electrolyte: the electrolyte is ammonium fluoride electrolyte, silver nitrate electrolyte, saturated potassium chloride electrolyte and sodium sulfate electrolyte. in:

[0040] The ammonium fluoride electrolyte is made up of 0.25wt% ammonium fluoride, 2.5vol% deionized water and 97.5vol% ethylene glycol; place the weighed ammonium fluoride in a beaker and add deionized water, stir Until the ammonium fluoride is completely dissolved; add ethylene glycol into the aqueous solution of the dissolved ammonium fluoride, fully stir the aqueous solution of the ammonium fluo...

Embodiment 2

[0047] This embodiment is a method for preparing a solar cell photoanode.

[0048] The preparation process of this embodiment is as follows:

[0049] Step 1, processing the titanium foil substrate: cutting the titanium foil into strips of 1 cm×5 cm, polishing, and ultrasonic cleaning with acetone, absolute ethanol and deionized water for 5 minutes each; the ultrasonic power is 200 watts.

[0050] Step 2, prepare electrolyte: electrolyte is hydrogen fluoride electrolyte, silver nitrate electrolyte, saturated potassium chloride electrolyte and sodium sulfate electrolyte. in:

[0051] Hydrogen fluoride electrolyte is made of 0.1mol L -1 Hydrogen fluoride and 2.0mol·L -1 mixed solution of sulfuric acid. Put the weighed hydrogen fluoride in a beaker and add deionized water, fully stir until the hydrogen fluoride and deionized water are completely mixed evenly; add sulfuric acid to the aqueous solution with hydrogen fluoride dissolved, stir fully to make the aqueous hydrogen flu...

Embodiment 3

[0058] This embodiment is a method for preparing a solar cell photoanode.

[0059] The preparation process of this embodiment is as follows:

[0060] Step 1, processing the titanium foil substrate: cutting the titanium foil into strips of 1 cm×5 cm, polishing, and ultrasonic cleaning with acetone, absolute ethanol and deionized water for 5 minutes each; the ultrasonic power is 200 watts.

[0061] Step 2, preparing electrolyte: the electrolyte is ammonium fluoride electrolyte, silver nitrate electrolyte, saturated potassium chloride electrolyte and sodium sulfate electrolyte. in:

[0062] The ammonium fluoride electrolyte is made up of 0.25wt% ammonium fluoride, 2.5vol% deionized water and 97.5vol% ethylene glycol; place the weighed ammonium fluoride in a beaker and add deionized water, stir Until the ammonium fluoride is completely dissolved; add ethylene glycol into the aqueous solution of the dissolved ammonium fluoride, fully stir the aqueous solution of the ammonium fluo...

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Abstract

The invention discloses a method for preparing a solar cell photo-anode. A layer of silver nanoparticles is deposited on the surface of a TiO2 nanotube array with a photo-deposition method. In the method, the concentration of silver nitrate electrolyte is controlled reasonably, the TiO2 nanotube array is put into the silver nitrate electrolyte, and the surface with the TiO2 nanotube array is irradiated by an ultraviolet light source. The light source wave peak of photo-deposition is 365 nanometers, the light intensity is 800-1,400 mw.cm<-2>, and the deposition time is 2-10 minutes, so that a silver-modified TiO2 nanotube array photo-anode is obtained. In the method, gold is replaced by silver and a metal-modified photo-anode is prepared with photo-deposition instead of an electron beam photoetching technology, so that the short-circuit current density and open-circuit voltage of a prepared silver nanoparticle-TiO2 nanotube array photo-anode are raised greatly. By adopting the method, undue dependence of high-cost noble metals is lowered, the cost is reduced, the preparation period is shortened, solar energy is utilized to the maximum extent, and the aim of relieving the energy pressure is finally fulfilled.

Description

technical field [0001] The invention relates to the field of solar cells, in particular to a method for preparing a photoanode of a solar cell. Background technique [0002] In recent years, since the invention of dye-sensitized nanocrystalline solar cells (DSSC), it has become a research hotspot at home and abroad due to the advantages of low cost, simple process and stable performance. In order to improve the photoelectric conversion efficiency of the battery, researchers continue to improve the sensitizer, electrolyte and semiconductor photoanode materials of the battery. Among them, selecting a suitable semiconductor photoanode material is an important way to improve the photoelectric conversion efficiency of the battery. Since the 1980s, Gratzel's research group at the Swiss Industrial School of Lausanne has been working on dye-sensitized TiO 2 Research on thin-film solar cells, "A Low-cost, High-efficiency Solar-cell Based on Dye-sensitized Colloidal TiO2" published ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/48H01G9/04H01G9/20H01M14/00
CPCY02E10/50Y02E10/549
Inventor 陈福义樊莉红
Owner NORTHWESTERN POLYTECHNICAL UNIV