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Phosphorene modified dye-sensitized solar battery TiO2 photo-anode and preparation method thereof

A technology for solar cells and dye sensitization, which is applied in the field of TiO2 photoanode of dye-sensitized solar cells and its preparation, can solve the problem of low photoelectric conversion efficiency of photoanode, reduce resistance and reverse electron transfer probability, and improve energy level Matching effect, effect of promoting separation of electrons and holes

Inactive Publication Date: 2017-10-03
NAT UNIV OF DEFENSE TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved in the present invention is to overcome the deficiencies of the prior art, especially the existing dye-sensitized solar cell TiO 2 For the technical problem of low photoelectric conversion efficiency of the photoanode, provide a phosphorene-modified dye-sensitized solar energy that can effectively reduce the probability of electron reverse transfer, generate photoelectrons by itself, improve the energy level matching effect between the photoanode and the dye, and improve the photoelectric conversion efficiency. Battery TiO 2 Photoanode and its preparation method

Method used

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  • Phosphorene modified dye-sensitized solar battery TiO2 photo-anode and preparation method thereof
  • Phosphorene modified dye-sensitized solar battery TiO2 photo-anode and preparation method thereof
  • Phosphorene modified dye-sensitized solar battery TiO2 photo-anode and preparation method thereof

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Embodiment 1

[0033] A phosphorene-modified dye-sensitized solar cell TiO of the present invention 2 photoanode, the phosphorene-modified dye-sensitized solar cell TiO 2 The photoanode is mainly composed of phosphorene and TiO 2 The slurry is mixed and coated on a conductive material and prepared by sintering. Phosphorene is mainly prepared by mixing black phosphorus powder, bromine and an organic solvent through a bromine intercalation-assisted liquid-phase ultrasonic stripping method.

[0034] A phosphorene-modified dye-sensitized solar cell TiO of the above-mentioned embodiment 2 A method for preparing a photoanode, comprising the steps of:

[0035] (1) Preparation of phosphorene: Weigh 0.1g of black phosphorus powder, specifically black phosphorus micron powder with a particle size of <100 microns, mix it with 5 mL of bromine, 5 mL of N-methyl-2-pyrrolidone (NMP), and grind thoroughly Afterwards, transfer all to a 30mL brown bottle, pass argon gas into the brown bottle for 15min at a...

Embodiment 2

[0043] A phosphorene-modified dye-sensitized solar cell TiO of the present invention 2 The preparation method of the photoanode is basically the same as in Example 1, the only difference is that in step (1), the amount of bromine added is 10 mL. The photoelectric conversion efficiency of the resulting cell n =3.30%, fill factor FF =0.67, short circuit current J SC =7.004mA / cm 2 , open circuit voltage V OC =0.732V.

Embodiment 3

[0045] A phosphorene-modified dye-sensitized solar cell TiO of the present invention 2 The preparation method of the photoanode is basically the same as that in Example 1, the only difference is: step (1) the first centrifugation speed is 13000rpm. The photoelectric conversion efficiency of the resulting cell n =3.22%. This shows that if the centrifugal speed is too high, the thickness will be thinner, but the radial size of the phosphorene sheet is also smaller, which may reduce the photoelectric conversion efficiency instead.

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Abstract

The invention discloses a phosphorene modified dye-sensitized solar battery TiO2 photo-anode and a preparation method thereof. The photo-anode mainly is prepared by mixing phosphorene and TiO2 sizing agent, coating the mixture on a conductive material and carrying out sintering. The phosphorene is mainly prepared by mixing black phosphorus powder, bromine and organic solvent and carrying out bromine intercalation auxiliary liquid phase ultrasonic stripping method. The preparation method comprises the steps of mixing the black phosphorus powder, bromine and organic solvent, preparing the phosphorene through utilization of the bromine intercalation auxiliary liquid phase ultrasonic stripping method, mixing the phosphorene and TiO2 sizing agent, coating the mixture on the conductive surface of the conductive material, and carrying out sintering, thereby obtaining the phosphorene modified dye-sensitized solar battery TiO2 photo-anode. According to the photo-anode provided by the invention, the resistance of an electron transport interface and an electron reverse transferring probability can be reduced, photoproduction electrons are produced, the energy level matching effect of the photo-anode and dye is improved, and the photoelectric converting efficiency of the existing dye-sensitized solar battery is improved.

Description

technical field [0001] The invention belongs to the technical field of solar cell manufacturing, in particular to a phosphorene-modified dye-sensitized solar cell TiO 2 Photoanode and method for its preparation. Background technique [0002] With the depletion of mineral energy such as coal, oil, and natural gas, it is becoming more and more urgent to find other alternative energy sources. Solar energy is a kind of clean energy, which has the advantages of being inexhaustible, inexhaustible, safe, non-polluting, and free from geographical environment constraints, and is increasingly valued and favored by people. Silicon solar cells are relatively mature in current research and development, and have many applications, and their photoelectric conversion efficiency can reach more than 15%. However, silicon cells have the disadvantages of photocorrosion and high cost, which limit the wide application of silicon cells. In order to improve this problem, it has been reported tha...

Claims

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Application Information

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IPC IPC(8): H01G9/20H01G9/042
CPCY02E10/542H01G9/2031
Inventor 王璟宋嘉林潇羽楚增勇王清华
Owner NAT UNIV OF DEFENSE TECH
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