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Composite light anode for dye-sensitized solar cell and preparation method thereof

A technology of solar cells and dye sensitization, which is applied in the field of new energy development and utilization, can solve the problems of increased recombination rate, small electron diffusion coefficient, and restriction of photoelectric conversion efficiency of dye-sensitized solar cells, so as to increase adsorption capacity and reduce Recombination process, the effect of improving photoelectric conversion efficiency

Inactive Publication Date: 2012-11-07
GUANGDONG UNIV OF TECH
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Problems solved by technology

Traditional DSSC photoanodes generally use nano-TiO 2 porous film, TiO 2 Although the porous film can fully absorb the dye, there are a large number of grain boundaries, which cause the photogenerated electrons to be affected by the capture and heat release of the defect state energy level on the particle surface during the transmission process, resulting in a small electron diffusion coefficient and an increased recombination rate, which restricts the dye-sensitivity. Improvement of photoelectric conversion efficiency of solar cells

Method used

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  • Composite light anode for dye-sensitized solar cell and preparation method thereof
  • Composite light anode for dye-sensitized solar cell and preparation method thereof
  • Composite light anode for dye-sensitized solar cell and preparation method thereof

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Embodiment Construction

[0022] 1. Using magnetron sputtering technology to prepare a layer of dense TiO on the FTO transparent conductive glass film 2 film

[0023] Back vacuum 5×10 -4 Pa, sputtering pressure 2.5Pa, Ar and O 2 The flow ratio is 5:1, the sputtering power is 80W, the sputtering time is 8min, the substrate temperature is room temperature, TiO 2 The thickness of the dense film is 10-15nm.

[0024] 2. Preparation of TiO by Hydrothermal Synthesis Technology 2 Nanowires

[0025] 1g TiO 2 After mixing the nanopowder with 30mL NaOH aqueous solution with a concentration of 10mol / L, and electromagnetically stirring for 15min, a white suspension was obtained, which was transferred to a 100mL high-pressure reactor, and then the reactor was placed in a thermostat at 180°C for 24h. . After the reaction, cool down to room temperature naturally, wash the white precipitate repeatedly with deionized water, then pickle with 0.5mol / L HCl until the pH value is equal to 7, then ultrasonically disper...

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Abstract

The invention discloses a composite light anode for a dye-sensitized solar cell and a preparation method thereof. The composite light anode consists of common glass, an F-doped SnO2 transparent conductive film, a TiO2 compact film and a TiO2 nanoparticle / TiO2 nanowire composite film. The preparation method comprises the following steps of: preparing the compact TiO2 film with thickness of about 10 to 15nm on an FTO conductive glass substrate by magnetron sputtering technology; preparing TiO2 nanowires by hydrothermal synthesis technology; preparing the TiO2 nanoparticle / TiO2 nanowire composite film by a sol-gel method; and preparing the TiO2 nanoparticle / TiO2 nanowire composite light anode. The composite light anode has the advantages of improving the adsorption capacity of a photosensitive dye, ensuring that an electrode has high light capturing efficiency, improving the generation rate and transportation capability of a photon-generated carrier, and reducing the compounding process of the photon-generated carrier so as to improve the photoelectric conversion efficiency of the dye-sensitized solar cell.

Description

technical field [0001] The invention relates to the development and utilization of new energy, in particular to a composite photoanode of a dye-sensitized solar cell and a preparation method thereof. Background technique [0002] Since the beginning of the 20th century, with the huge energy consumption in the process of economic development, mineral resources such as coal, oil, and natural gas have been exhausted. The resulting energy crisis and environmental pollution have become key issues that need to be solved urgently. The way to solve this problem is on the one hand to save energy and reduce emissions in traditional industries, and on the other hand to develop renewable clean energy. Solar energy utilization supported by solar photovoltaic technology is bringing revolutionary changes to human energy consumption structure. The current mainstream product of solar cells is silicon-based solar cells. However, the development of the electronics industry has intensified the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/04H01G9/20H01M14/00H01L51/44H01L51/48
CPCY02E10/542Y02E10/549
Inventor 魏爱香赵旺刘俊
Owner GUANGDONG UNIV OF TECH
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