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Preparation method of hybridized electrode of zinc oxide and titanium dioxide

A technology of titanium dioxide and zinc oxide, applied in the field of preparation of zinc oxide and titanium dioxide hybrid electrodes, can solve the problems of high resistance, low electron mobility, low energy conversion efficiency of photovoltaic cells and the like

Inactive Publication Date: 2013-05-15
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Application Information

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Problems solved by technology

[0004] TiO 2 There are many grain interfaces in the porous structure of the film, which leads to a large resistance of charge transmission between nanocrystalline particles and low electron mobility, which also leads to the phenomenon of recombination of electrons and holes in the electrolyte (dark current Phenomenon), making the energy conversion efficiency of photovoltaic cells low

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  • Preparation method of hybridized electrode of zinc oxide and titanium dioxide
  • Preparation method of hybridized electrode of zinc oxide and titanium dioxide
  • Preparation method of hybridized electrode of zinc oxide and titanium dioxide

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preparation example Construction

[0021] See figure 1 , The preparation method of the zinc oxide and titanium dioxide hybrid electrode of one embodiment includes the following steps:

[0022] Step S21, adding titanium dioxide nanocrystalline particles into a solvent to form a colloid with a mass concentration of titanium dioxide of 15%-40%, then adding a surfactant and a chelating agent to the colloid, and stirring uniformly to obtain a titanium dioxide colloid.

[0023] In this embodiment, the particle size of the titanium dioxide particles is 20-100 nm. The solvent is selected from at least one of distilled water, ethanol, n-butanol or isopropanol.

[0024] In this embodiment, the surfactant is OP emulsifier or polyethylene glycol p-isooctyl phenyl ether (Triton). The mass concentration of the surfactant in the titanium dioxide colloid is 1% to 5%.

[0025] In this embodiment, the chelating agent is acetylacetone. The mass concentration of the chelating agent in the titanium dioxide colloid is 1%-10%.

[0026] In t...

Embodiment 1

[0043] Nano TiO 2 Add to distilled water and configure into TiO with 25% solid content 2 For the colloid, add triton and acetylacetone in sequence so that the mass fraction of triton is 3% and the mass fraction of acetylacetone is 6%, and the grinding is performed for 30 minutes. Dissolve zinc acetate in distilled water, Zn 2+ The concentration is 0.1mol / L, and then the zinc acetate solution is added to the TiO 2 In the colloid, it is in combination with TiO 2 The mass ratio to zinc acetate is 1:0.1, and it will be used after grinding again for 10 minutes.

[0044] After cleaning the conductive glass, apply the above-prepared mixed colloid on the surface of the conductive film by knife coating. After drying, heat up to 450°C at a rate of 20°C / min, and then keep it at this temperature for 30 minutes Then, it is naturally cooled to 100° C., and the thickness of the semiconductor oxide film is 15 μm.

[0045] The prepared hybrid electrode is immersed in a solution of ruthenium dye N71...

Embodiment 2

[0047] Nano TiO 2 Add it to distilled water and configure it into TiO with a solid content of 15% 2 For the colloid, add triton and acetylacetone in sequence so that the mass fraction of triton is 1% and the mass fraction of acetylacetone is 1%, and the grinding is performed for 30 minutes. Dissolve zinc sulfate in distilled water to make Zn 2+ The concentration is 0.2mol / L, and then the zinc sulfate solution is added to the TiO 2 In the colloid, it is in combination with TiO 2 The ratio of mass to zinc sulfate is 1:0.05, and it will be used after grinding again for 10 minutes.

[0048] After the conductive glass is cleaned, the mixed colloid prepared above is scraped on the surface of the conductive film by a knife coating method, and then sintered according to the method of Example 1, and assembled into a dye-sensitized solar cell. The thickness of the oxide film is 12 μm.

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Abstract

A preparation method of hybridized electrode of zinc oxide and titanium dioxide is characterized by comprising the following steps: step 1, nanocrystal particles of the titanium dioxide are added into solvent so that a colloid with titanium dioxide mass concentration from 15% to 40% is formed and a surface active agent and a chelating agent are added in to the colloid so that a titanium dioxide colloid is obtained after even stir; step 2, zinc source compound solution is added into the titanium dioxide colloid for even mix so that a mixed colloid is formed and in the mixed colloid, the molar ratio of the titanium dioxide and Zn 2+ is from 1:0.2 to 1:0.5; step 3, the mixed colloid is coated on a conducive substrate; and step 4, the conductive substrate coated with the mixed colloid is calcined so that the mixed colloid of the titanium dioxide and the zinc source compound form a zinc oxide and titanium dioxide hybridized film and the hybridized electrode of the zinc oxide and the titanium dioxide is obtained. According to the preparation method of the hybridized electrode of the zinc oxide and the titanium dioxide, the hybridized electrode of the zinc oxide and the titanium dioxide prepared is capable of improving photoelectric conversion efficiency.

Description

【Technical Field】 [0001] The invention relates to a method for preparing a zinc oxide and titanium dioxide hybrid electrode. 【Background technique】 [0002] Photovoltaic cells are usually made of nanocrystalline TiO 2 Photo anode (working electrode), containing I - / I 3 - The electrolyte and the counter electrode of the redox couple are composed of three parts. The function of the counter electrode is to collect electrons from the external circuit of the battery, and transfer it to the electrolyte quickly and with low consumption, and at the same time catalytically reduce the I 3 - . In addition, the counter electrode can also reflect the light not absorbed by the working electrode back to the working electrode for secondary absorption, which improves the absorption efficiency of sunlight. Therefore, as the counter electrode of DSSCs, it must have high catalytic activity, high carrier transport ability and good stability. [0003] The commonly used nano-semiconductor materials in...

Claims

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Application Information

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IPC IPC(8): H01G9/042H01G9/20H01M14/00H01L51/48
CPCY02E10/549
Inventor 周明杰王平冯小明张振华
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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