Paper dye sensitization solar battery photo-anode and preparation method thereof

A solar cell and dye sensitization technology, applied in the field of paper-type dye-sensitized solar cell photoanode and its preparation, can solve the problems of hindering the large-scale industrial application of dye-sensitized solar cells, high manufacturing cost, complicated manufacturing process and the like , to achieve the effect of reasonable structure design, low cost and good light absorption

Active Publication Date: 2011-06-01
TSINGHUA UNIV
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Problems solved by technology

Whether rigid fluorine-doped tin oxide (Fluorine-doped transparent conducting oxide glass, SnO 2 : F, FTO) or indium-doped tin oxide (Indium-doped transparent conducting oxide, SnO 2 : In, ITO) conductive glass substrate, or flexible conductive polymer indium-doped tin oxide (Indium-doped transparent conducting oxide, SnO 2 :In, ITO) polyethylene naphthalate (Polyethylene naphthalate, PEN) substrate, its manufacturing cost is all very

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  • Paper dye sensitization solar battery photo-anode and preparation method thereof
  • Paper dye sensitization solar battery photo-anode and preparation method thereof
  • Paper dye sensitization solar battery photo-anode and preparation method thereof

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[0048] The preparation method of the dye-sensitized solar cell in the embodiment: immerse the sintered nano-semiconductor film electrode in the ethanol solution of N719 dye for 12 hours, take it out, rinse it with absolute ethanol and dry it to make a dye-sensitized film Electrode; the prepared sensitizing electrode is used as the working electrode, the platinum-plated conductive substrate is used as the counter electrode, and the sensitized electrode containing 0.5M LiI, 0.05M I 2 and 0.5M acetonitrile solution of tetra-tert-butylpyridine as electrolyte to assemble a dye-sensitized solar cell with a "sandwich" structure.

[0049] The photoelectric test method of the dye-sensitized solar cell in the embodiment: the photoelectric performance measurement of the cell was measured at room temperature using a computer-controlled Oriel sunlight simulation system. The incident light intensity is 100mW / cm 2 , the illuminated area is 0.16cm 2 .

Embodiment 1

[0051] (1) Nanofibers were synthesized by hydrothermal method: raw materials were 0.2g P25 powder + 30ml deionized water + 12gNaOH, hydrothermal reaction at 200°C for 96h;

[0052] (2) Add surfactant F-127 to the nanofiber slurry again, the mass fraction of surfactant F-127 is 0.1%, improve the dispersion performance of nanofibers in the slurry, and stir and mix to form a well-dispersed Nanofiber precursor slurry;

[0053] (3) the precursor slurry prepared by step (2) is made into nano-paper by hot pressing film-forming method;

[0054] (4) Sintering the nano paper under the conditions of 200°C for 2h, 500°C for 30min, 500°C for 2h, and 600°C for 2h, then naturally cooling to room temperature, the thickness of the obtained nanopaper is 10 μm;

[0055] (5) Scrape-coat a layer of titanium dioxide slurry containing a binder such as terpineol and ethyl cellulose or an organic polymer pore-forming agent on the surface of the nano-paper after sintering and cooling, and sinter at 50...

Embodiment 2

[0060] The raw materials for hydrothermal synthesis are (0.25g Al 2 o 3 +30ml deionized water+12g NaOH), (0.15gSiO 2 +30ml deionized water+12g NaOH), (0.38g SnO 2 +30ml deionized water+12g NaOH), (0.7g In 2 o 3 +30ml deionized water+12g NaOH), (0.67g Nb 2 o 5 +30ml deionized water+12gNaOH), the sintering time is 500° C. for 2h, the rest of the conditions are the same as in Example 1, and the photoelectric conversion efficiencies are respectively 4.82%, 3.52%, 3.81%, 2.65%, and 2.82%.

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Abstract

The invention discloses a paper dye sensitization solar battery photo-anode and a preparation method thereof, which belong to the technical field of solar electrode materials and a preparation method thereof. The photo-anode has three layers of structures, wherein a first layer is nanometer paper, namely metallic oxide nanometer paper or sodium graphene nanometer paper; a second layer is a wide-band gap semiconductor porous membrane formed on the surface of the nanometer paper; and a third layer is a layer of transparent conducting membrane formed on the surface of the semiconductor porous membrane. A nanometer paper substrate made of nanometer wires or nanometer fibers is non-transparent, and can scatter sunlight fully; and a conducting layer is transparent, so the obtained electrode can absorb and utilize visible light fully. The paper dye sensitization solar battery photo-anode has reasonable structural design, and high light-absorbing performance, is low in cost, is easy and convenient to prepare, can be sintered at high temperature and improve light absorptivity, is suitable for preparing flexible dye sensitization solar batteries, and has the obvious significance to the discovery of reducing battery cost.

Description

technical field [0001] The invention belongs to the technical field of solar electrode materials and preparation methods thereof, and in particular relates to a photoanode of a paper-type dye-sensitized solar cell and a preparation method thereof. Background technique [0002] A dye-sensitized solar cell (Dye Sensitized Solar Cell, dye-sensitized solar cell) is a new type of solar cell. Since 1991 when the laboratory of the Swiss Institute of Technology applied nanostructures to dye-sensitized solar cells, dye-sensitized solar cells have been favored by scientists from all over the world for their potential advantages of high efficiency and low cost. [0003] A dye-sensitized solar cell is a "sandwich" structure composed of a photoanode (including a conductive substrate, a semiconductor porous nanocrystalline film, and a dye photosensitizer), an electrolyte, and a counter electrode (a catalytic layer and a conductive substrate). [0004] Dye-sensitized solar cells can be di...

Claims

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Application Information

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IPC IPC(8): H01G9/04H01G9/20H01M14/00H01L51/44H01L51/48
CPCY02E10/542Y02E10/50Y02E10/549
Inventor 林红赵晓冲李建保
Owner TSINGHUA UNIV
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