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A preparation method of a multi-band absorbing near-infrared sunlight dye-sensitized solar cell photoanode material

A technology for solar cells and dye sensitization, applied in the field of preparation of photoanode materials for dye-sensitized solar cells, can solve the problem of low utilization of sunlight in the infrared band, and achieve the effects of avoiding quenching effects, large specific surface area, and increasing absorption

Active Publication Date: 2017-05-31
HARBIN HUIGONG TECH CO LTD
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AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the technical problem of low utilization of infrared band sunlight in the existing method for enhancing dye-sensitized cells with up-conversion materials, and provides a preparation of photoanode materials for dye-sensitized solar cells that absorb near-infrared sunlight in multiple bands method

Method used

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  • A preparation method of a multi-band absorbing near-infrared sunlight dye-sensitized solar cell photoanode material
  • A preparation method of a multi-band absorbing near-infrared sunlight dye-sensitized solar cell photoanode material
  • A preparation method of a multi-band absorbing near-infrared sunlight dye-sensitized solar cell photoanode material

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specific Embodiment approach 1

[0029] Embodiment 1: The preparation method of the multi-band absorption near-infrared sunlight dye-sensitized solar cell photoanode material of this embodiment is carried out according to the following steps:

[0030] 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 ), ytterbium chloride (YbCl 3 ) and Erbium Chloride (ErCl 3 ) in a molar ratio of (80+m+n): (10-m): (10-n), yttrium chloride, ytterbium chloride and erbium chloride are added to the mixture, stirred evenly, heated to 120 ~150°C and keep it for 30~60min, then naturally cool to room temperature to obtain raw material solution A; where 0≤m<10, 0≤n<10;

[0031] 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);

[0032] Step 3: Under the protection of ni...

specific Embodiment approach 2

[0041] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the ratio of the molar sum of yttrium chloride, ytterbium chloride and erbium chloride to the volume of the mixed solution in step one is 1mmol: 9~30ml; other It is the same as the first embodiment.

specific Embodiment approach 3

[0042] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the stirring speed in Step 1 is 800-1000 r / min; the others are the same as Embodiment 1 or 2.

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Abstract

The invention discloses a method of preparing a dye-sensitized solar cell photo anode material capable of absorbing near infrared sunlight in multiple bands, which relates to the dye-sensitized solar cell photo anode material preparation method and aims at solving the technical problem of low infrared band sunlight utilization by the existing method of enhancing the dye-sensitized cell by an up-conversion material. The method comprises steps: yttrium chloride, ytterbium chloride, erbium chloride and ammonium fluoride are firstly used for preparing nanocrystalline which serves as crystal nucleus; the nanocrystalline is then diffused in a ytterbium chloride and ammonium fluoride raw material solution, and a first-layer core-shell structure nanocrystal is obtained; the first-layer core-shell structure nanocrystal is diffused in a yttrium chloride, holmium chloride and ammonium fluoride raw material solution for reaction, and a two-layer core-shell structure nanocrystal is obtained; and the two-layer core-shell structure nanocrystal is diffused in a raw material solution containing tetrabutyl titanate, and after a hydrothermal reaction, the photo anode material is obtained. The method of the invention can improve the photoelectric conversion efficiency of the solar cell.

Description

technical field [0001] The invention relates to a preparation method of a dye-sensitized solar cell photoanode material. Background technique [0002] As a renewable and non-polluting energy source, photovoltaic solar cells can well solve the two major problems of energy and the environment, and have broad development prospects. Although the photovoltaic industry has made great progress in recent decades, the low efficiency and high cost of photovoltaic solar cells make the cost of solar cells per kilowatt-hour higher than conventional energy sources, which limits its popularization and practical application. Therefore, in order to further achieve low cost and high efficiency, and to achieve practical purposes, people have developed a representative third-generation solar cell, that is, dye-sensitized solar cells, which have attracted widespread attention and research by international researchers. Scientists have improved their photoelectric conversion efficiency through a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/20H01G9/042
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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