An electrode of quantum dot sensitization solar battery and the corresponding preparation method

A technology for quantum dot sensitization and solar cell, applied in the field of quantum dot sensitization solar cell electrodes and their preparation, can solve the problems of low photoelectric conversion efficiency, poor crystallinity of quantum dots, poor battery stability, etc., and achieves improved stability and photoelectricity. Effects of conversion efficiency, enhanced efficiency, high crystallinity and luminous efficiency

Inactive Publication Date: 2008-07-09
IRICO
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the first preparation method, the quantum dots are combined by adsorption, and the stability of the battery is poor. In the second preparation method, the si

Method used

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  • An electrode of quantum dot sensitization solar battery and the corresponding preparation method

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Embodiment 1,1

[0018] Embodiment 1, 1) prepare the titania nanocrystal of CdSe quantum dot sensitization

[0019] Preparation of selenium precursor: mix octadecene and tributyl phosphate evenly at a volume ratio of 1:1.5 to obtain a mixed solution, then add selenium powder to the mixed solution at a ratio of 0.8mmol:1ml of selenium powder to the mixed solution Make selenium precursor;

[0020] Preparation of cadmium precursor: Mix oleic acid and octadecene uniformly at a volume ratio of 1:4 to obtain a mixed solution, and then add cadmium oxide to the mixed solution at a ratio of 1 mmol: 10 ml of cadmium oxide powder to the mixed solution under nitrogen gas Heating under protection until completely dissolved to make a cadmium precursor;

[0021] Disperse the nano-titanium dioxide powder in octadecene at a ratio of 1g: 5ml to make an octadecene solution of titanium dioxide, add the octadecene solution of titanium dioxide to the cadmium precursor at room temperature at a volume ratio of 1:2 a...

Embodiment 2

[0024] Embodiment 2, 1) prepare the titania nanocrystal of CdSe quantum dot sensitization

[0025] Preparation of selenium precursor: mix octadecene and tributyl phosphate evenly at a volume ratio of 1:1.0 to obtain a mixed solution, and then add selenium powder to the mixed solution at a ratio of 1.0mmol:1ml of selenium powder to the mixed solution Make selenium precursor;

[0026] Preparation of cadmium precursor: mix oleic acid and octadecene uniformly at a volume ratio of 1:12 to obtain a mixed solution, then add cadmium oxide to the mixed solution at a ratio of cadmium oxide powder to mixed solution of 1mmol:17ml in nitrogen gas Heating under protection until completely dissolved to make a cadmium precursor;

[0027] According to the ratio of 1g: 8ml, the nano-titanium dioxide powder is dispersed in octadecene to make an octadecene solution of titanium dioxide. At room temperature, the octadecene solution of titanium dioxide is added to the cadmium precursor at a volume ...

Embodiment 3

[0030] Embodiment 3, 1) prepare the titania nanocrystal of CdSe quantum dot sensitization

[0031] Preparation of selenium precursor: mix octadecene and tributyl phosphate evenly at a volume ratio of 1:0.8 to obtain a mixed solution, then add selenium powder to the mixed solution at a ratio of 0.9mmol:1ml of selenium powder to the mixed solution Make selenium precursor;

[0032] Preparation of cadmium precursor: mix oleic acid and octadecene uniformly at a volume ratio of 1:15 to obtain a mixed solution, then add cadmium oxide to the mixed solution at a ratio of 1mmol:24ml of cadmium oxide powder to the mixed solution under nitrogen gas Heating under protection until completely dissolved to make a cadmium precursor;

[0033] Disperse the nano-titanium dioxide powder in octadecene at a ratio of 1g: 10ml to make an octadecene solution of titanium dioxide, add the octadecene solution of titanium dioxide to the cadmium precursor at room temperature at a volume ratio of 1:1 and he...

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Abstract

The invention relates to an electrode of a quantum dot-sensitized solar cell and the preparation method, octadecene, tributyl phosphate and selenium powder are mixed to prepare a selenium precursor; oleic acid, octadecene and cadmium oxide power are mixed to prepare a cadmium precursor; the nano titanium dioxide powder is dispersed in an octadecene solution of titanium dioxide which is prepared in the octadecene, the octadecene solution of the titanium dioxide is washed and dried in the mixed solution of cadmium precursor and selenium precursor so as to obtain a quantum dot-sensitized titanium dioxide nanocrystal; the quantum dot-sensitized titanium dioxide powder and a non-ionic surfactant are mixed and ground to prepare a paste, the paste is evenly coated on a transparent conductive substrate to form a thin film, and finally sintering is carried out. As the quantum dots are directly in-situ synthesized at the surface of titanium dioxide, the quantum dots are closely combined with the titanium dioxide particles, thus the invention is beneficial to the improvement of the stability of the cell and the photoelectric conversion efficiency; furthermore, the quantum dots which are generated under an oily system have very high crystallinity and luminous efficiency, thus the invention is beneficial to the further improvement of the efficiency of the solar cell.

Description

technical field [0001] The invention belongs to the field of dye-sensitized solar cell materials, and in particular relates to a quantum dot-sensitized solar cell electrode and a preparation method thereof. Background technique [0002] With the increasing severity of the global energy crisis, people are eager to find a sustainable clean energy source. Solar energy, as an inexhaustible natural energy source, has increasingly attracted the attention of countries all over the world. Compared with traditional silicon solar cells, dye-sensitized solar cells have low cost and simple fabrication, and have become a research hotspot of scholars from all over the world. In the fabrication process of dye-sensitized solar cells, one of the key steps is to sensitize the wide bandgap semiconductor film. [0003] The dyes traditionally used for sensitization are mostly organic dyes or organometallic complexes, but the absorption spectrum of these dyes is discontinuous and poor in stabil...

Claims

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Application Information

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IPC IPC(8): H01L31/18H01L31/0224H01G9/042H01G9/20H01M14/00H01M4/04H01M4/02
CPCY02P70/50
Inventor 李德娜
Owner IRICO
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