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Infrared dye cascade sensitized dye-sensitized solar cell photoanode and preparation method thereof

A technology of solar cells and infrared dyes, which is applied in the field of preparation of photoanode materials for solar cells, can solve the problems of weakly absorbing sunlight in the infrared band, achieve high-efficiency wavelength conversion characteristics, enhance photoelectric conversion efficiency, and effectively and comprehensively utilize the effect

Active Publication Date: 2017-02-22
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the technical problem of the existing up-conversion-based dye-sensitized solar cell with a narrow band weakly absorbing sunlight in the infrared band, and provides a method for preparing a photoanode of a dye-sensitized solar cell sensitized by an infrared dye cascade

Method used

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  • Infrared dye cascade sensitized dye-sensitized solar cell photoanode and preparation method thereof
  • Infrared dye cascade sensitized dye-sensitized solar cell photoanode and preparation method thereof
  • Infrared dye cascade sensitized dye-sensitized solar cell photoanode and preparation method thereof

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specific Embodiment approach 1

[0029] Embodiment 1: The dye-sensitized solar cell photoanode of the infrared dye cascade sensitization of this embodiment is composed of an FTO conductive glass substrate, a titanium dioxide layer loaded with N719 dye, and an IR783 infrared dye-sensitized NaYF 4 :Yb / Er@NaYF 4 : Nd layer composition; the titanium dioxide layer loaded with N719 dye is the middle layer, and the IR783 infrared dye-sensitized NaYF 4 :Yb / Er@NaYF 4 : The Nd layer is the surface layer.

specific Embodiment approach 2

[0030] Specific embodiment two: the preparation method of the dye-sensitized solar cell photoanode described in the specific embodiment one of the infrared dye cascade sensitization is carried out according to the following steps:

[0031] Step 1: After cutting the FTO conductive glass according to the size of the photoanode, drill the electrolyte injection hole, clean it and dry it to obtain the substrate;

[0032] Step 2: Weigh ethyl cellulose, titanium dioxide powder, terpineol and ethanol, first dissolve ethyl cellulose in ethanol by ultrasonic, then add titanium dioxide powder and terpineol, stir ultrasonically for 1h to 3h, heat to remove ethanol, and obtain slurry;

[0033] Step 3: Scrape-coat the slurry prepared in step 2 on the FTO conductive glass substrate treated in step 1, dry it at room temperature, put it in a muffle furnace, and heat it up for sintering to obtain a titanium dioxide-loaded FTO conductive glass substrate;

[0034] Step 4: According to the concen...

specific Embodiment approach 3

[0037] Embodiment 3: This embodiment is different from Embodiment 2 in that the diameter of the electrolyte injection hole in step 1 is 0.8mm-1mm. Other steps and parameters are the same as in the second embodiment.

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Abstract

The invention relates to an infrared dye cascade sensitized dye-sensitized solar cell photoanode and a preparation method thereof. The invention relates to a solar cell photoanode material and a preparation method thereof. The technical problem that the narrow-band of the existing upconversion base dye-sensitized solar cell weakly absorbs infrared band sunlight is solved. The dye-sensitized solar cell photoanode provided by the invention is composed of an FTO conductive glass substrate, a titanium dioxide layer carrying an N719 dye and a Na78Fa:Yb / Er@NaYF4:Nd layer sensitized by an IR783 infrared dye. The preparation method comprises the step that the titanium dioxide layer is prepared on an FTO conductive glass substrate, is immersed in the N719 dye, is immersed and processed in a sensitized NaYF4:Yb / Er@NaYF4:Nd solution, and is washed out and dried to acquire the photoanode. A cell prepared with the photoanode can absorb visible and infrared light. The photoelectric conversion efficiency is 13.4% higher than the conversion efficiency of a conventional solar cell.

Description

technical field [0001] The invention relates to a preparation method of a 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 it is expected to be vigorously promoted. At present, the sunlight we use is only one ten-thousandth of the solar energy reaching the earth's surface, and it is expected that solar energy will be able to meet most of the energy consumption needs in the future. 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 achieve the goal of low cost and high efficiency, the third generation of solar cells "dye-sensitized solar cells" has attracted widespr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/20
CPCH01G9/2031H01G9/2063Y02E10/542Y02P70/50
Inventor 郝树伟陈冠英尚云飞杨春晖
Owner HARBIN INST OF TECH
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