Preparation method of NaYF4:Er<3+>@NaYF4@TiO2 nanocrystalline dye-sensitized solar cell photo-anode material

A technology for solar cells and dye sensitization, which is applied in the field of preparation of photoanode materials for dye-sensitized solar cells, can solve the problems of low photoelectric conversion efficiency of dye-sensitized solar cells, achieve large specific surface area, improve up-conversion efficiency, reduce The effect of surface defects

Active Publication Date: 2015-10-14
HARBIN HUIGONG TECH CO LTD
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Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problem that the photoelectric conversion efficiency of the dye-sensitized solar cell pre

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  • Preparation method of NaYF4:Er&lt;3+&gt;@NaYF4@TiO2 nanocrystalline dye-sensitized solar cell photo-anode material
  • Preparation method of NaYF4:Er&lt;3+&gt;@NaYF4@TiO2 nanocrystalline dye-sensitized solar cell photo-anode material
  • Preparation method of NaYF4:Er&lt;3+&gt;@NaYF4@TiO2 nanocrystalline dye-sensitized solar cell photo-anode material

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specific Embodiment approach 1

[0024] Specific embodiment one: NaYF of this embodiment 4 :Er 3+ NaYF 4 TiO 2 The preparation method of nanocrystalline dye-sensitized solar cell photoanode material is carried out according to the following steps:

[0025] Step 1: According to the volume ratio of oleic acid and octadecene is 1:2~5, mix oleic acid and octadecene evenly to obtain a mixed solution, and then press yttrium chloride (YCl 3 ) and Erbium Chloride (ErCl 3 ) molar ratio of (90+X): (10-X) yttrium chloride (YCl 3 ) and Erbium Chloride (ErCl 3 ) into the mixed solution, heated to 120-150°C for 30-60 minutes under stirring conditions, and naturally cooled to room temperature to obtain the raw material solution A; wherein 0≤X≤10;

[0026] Step 2: Weigh ammonium fluoride (NH 4 F) and sodium hydroxide (NaOH) are dissolved in methanol, obtain raw material liquid B; Wherein NH 4 The molar ratio of F to NaOH is 1: (0.5-2);

[0027] Step 3: Under nitrogen protection, add the raw material solution B obtai...

specific Embodiment approach 2

[0033] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the ratio of the molar sum of yttrium chloride and erbium chloride to the volume of the mixed solution in step one is 1 mmol: (1~30) ml. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0034] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the step 2 uses ultrasonic treatment to rapidly dissolve ammonium fluoride and sodium hydroxide (NaOH) in methanol liquid. Others are the same as in the first or second embodiment.

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Abstract

The invention relates to a preparation method of a NaYF4:Er<3+>@NaYF4@TiO2 nanocrystalline dye-sensitized solar cell photo-anode material, relating to a preparation method of a dye-sensitized solar cell photo-anode material, and aiming to solve the technical problem that dye-sensitized solar cells prepared in the prior art have low photoelectric conversion efficiency. The method comprises the following steps: firstly preparing nanocrystalline with the characteristic of spectrum conversion with yttrium chloride, erbium chloride, sodium hydroxide and ammonium fluoride and then adding nanocrystalline to a reaction liquid of yttrium chloride, sodium hydroxide and ammonium fluoride to prepare nanocrystalline NaYF4:Er<3+>@NaYF4 with a core-shell structure; then adding nanocrystalline with the core-shell structure to a mixed liquid of oleylamine and oleic acid, then adding ethanol, water and tetrabutyl titanate, reacting in a high pressure reactor, and washing and drying to obtain nanocrystalline NaYF4:Er<3+>@NaYF4@TiO2. Nanocrystalline can be mixed in the photo-anode material to prepare dye-sensitized solar cells.

Description

technical field [0001] The invention relates to a preparation method of a dye-sensitized solar cell photoanode material. Background technique [0002] At present, the sunlight effectively used by human beings is only one ten-thousandth of the solar energy reaching the earth's surface, and people expect solar energy to meet most of the energy consumption needs in the future. As a renewable and non-polluting energy source, dye-sensitized solar cells can well solve the two major problems of energy and environment, and have broad development prospects. Although the field of solar cells has made great progress in recent decades, the low efficiency and high cost of solar cells make the cost of kilowatt-hours relatively high compared with conventional energy sources, which seriously limits their popularization and practical application. At present, scientists at home and abroad use various technical means to improve the conversion efficiency of solar cells, such as using dyes for ...

Claims

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Application Information

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IPC IPC(8): C09K11/86H01G9/20H01G9/042
CPCY02E10/542
Inventor 杨春晖郝树伟尚云飞陈冠英
Owner HARBIN HUIGONG TECH CO LTD
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