Preparation method of hybridization solar battery for perovskite-like sensitized photoanode

A solar cell and perovskite technology, applied in photosensitive devices, circuits, capacitors, etc., can solve the problem of uniform coating of organic and inorganic perovskites, the inability to effectively control the photoelectric performance, and the difficulty of controlling particle size, morphology, and thickness And other issues

Active Publication Date: 2013-12-11
HUAQIAO UNIVERSITY
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  • Summary
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

The key component of the organic-inorganic perovskite-sensitized hybrid solar cell is the organic-inorganic perovskite sensitizer. The traditional preparation method is to spin-coat its solution onto a thin film composed of wide-bandgap semiconductor oxide nanomaterials. However, this method is difficult to uniformly coat organic-inorganic perovskite in the film, and it is also difficult to control its key parameters such as particle size, shape, thickness, etc., so that it cannot effectively regulate its photoelectric performance.

Method used

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preparation example Construction

[0018] The invention relates to a method for preparing a perovskite-like sensitized photoanode for a hybrid solar cell. The preparation method is as follows:

[0019] Firstly, a submicron thick film composed of wide bandgap semiconductor oxide nanomaterials is prepared on a transparent conductive substrate, and then lead halide PbCl is deposited in the film by ion exchange method 2 or PbBr 2 or PbI 2 At least one of them, and finally react the deposited lead halide with the organic ammonium halide salt by impregnation method to in-situ generate organic-inorganic perovskite in the film to obtain a perovskite-sensitized photoanode.

[0020] lead halide PbCl by ion exchange 2 or PbBr 2 or PbI 2 At least one of the deposited into the wide bandgap semiconductor oxide nanomaterial film, where Pb 2+ Ions from (CH 3 COO) 2 Pb or Pb(NO 3 ) 2 The acetic acid solution provided, Cl - 、Br - or I - Provided by ethanol or ethanol-water mixed solution of NaCl, NaBr or NaI respecti...

Embodiment 1

[0030] First, TiO 2 Preparation of nanocrystalline thin films: commercially available TiO 2 Disperse 2kg of nanocrystalline particles in 2L of deionized water, add 0.2kg of polyethylene glycol (molecular weight: 20,000), grind evenly, coat on fluorine-doped tin oxide conductive glass, dry at 80°C, and place in Bake at 450-500°C for 0.5h in a muffle furnace to form a 0.1-0.8 micron thick film.

[0031] In the second step, the TiO 2 Deposit lead iodide in the nanocrystalline thin film: first 38g (CH 3 COO) 2 Dissolve Pb in 1L acetic acid to form 0.1M Pb 2+ Acetic acid solution; followed by dissolving 15g NaI in 1L ethanol to form 0.1M I - Alcoholic solution of plasma; finally, the TiO 2 Nanocrystalline films placed on Pb 2+ 30S in ionic solution, washed in ethanol and then placed in I - Ion solution for 30S, and then washed in ethanol to complete an ion exchange deposition, the thickness of lead iodide generated can be controlled by controlling the number of ion exchange...

Embodiment 2

[0036] First, TiO 2 Preparation of nanocrystalline thin films: commercially available TiO 2 Disperse 2kg of nanocrystalline particles in 2L of deionized water, add 0.2kg of polyethylene glycol (molecular weight: 20,000), grind evenly, coat on fluorine-doped tin oxide conductive glass, dry at 80°C, and place in Bake at 450-500°C for 0.5h in a muffle furnace to form a 0.1-0.8 micron thick film.

[0037] In the second step, the TiO 2 Deposit lead bromide in the nanocrystalline film: firstly, 38g(CH 3 COO) 2 Dissolve Pb in 1L acetic acid to form 0.1M Pb 2+ A solution of acetic acid; followed by dissolving 15g NaBr in 1L ethanol to form 0.1M Br - Alcoholic solution of plasma; finally, the TiO 2 Nanocrystalline films placed on Pb 2+ 30S in ionic solution, washed in ethanol and then placed in Br - Ion solution for 30S, and then washed in ethanol to complete an ion exchange deposition, the thickness of lead bromide generated can be controlled by controlling the number of ion e...

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Abstract

The invention provides a preparation method of a hybridization solar battery for a perovskite-like sensitized photoanode. The preparation method includes the following steps that a thin film with a thickness of a submicron and made of wide bandgap semiconductor oxide nano materials is manufactured on a transparent conductive substrate at first, then at least one of lead halide PbC12 or PbBr2 or PbI2 is deposited in the thin film by means of an ion exchange method, and finally deposited lead halide reacts with organic halogenated ammonium salt through an impregnation method to generate organic and inorganic perovskite in the thin film in situ to obtain the perovskite-like sensitized photoanode. According to the preparation method, components, grain diameters, thicknesses and other key parameters of the organic and inorganic perovskite can be conveniently controlled, and thus spectral response wave bands and photoelectric performance of the organic and inorganic perovskite can be controlled.

Description

【Technical field】 [0001] The invention relates to a method for preparing a perovskite-like sensitized photoanode for a hybrid solar cell. 【Background technique】 [0002] Dye or quantum dot sensitized solar cell is a new type of solar cell developed in the 1990s. It has low cost, simple preparation process and good environmental compatibility, and has a good application prospect. The organic-inorganic perovskite-sensitized hybrid solar cells that have emerged in recent years are the derivatives of the above-mentioned cells, which also have the advantages of low cost and easy preparation. At the same time, the photoelectric conversion efficiency of this type of cell is rapidly increasing. Reaching 15%, it is expected to become a strong competitor of silicon-based solar cells. The key component of the organic-inorganic perovskite-sensitized hybrid solar cell is the organic-inorganic perovskite sensitizer. The traditional preparation method is to spin-coat its solution onto a t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/042H01G9/20H01L51/44H01L51/48
CPCY02E10/549
Inventor 兰章吴季怀
Owner HUAQIAO UNIVERSITY
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