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Mg-doped CdTeO3 QDSC (Quantum Dots-Sensitized Solar Cell) and preparation method thereof

A technology for sensitization of solar cells and quantum dots is applied in the field of solar energy to achieve the effects of increasing short-circuit current density, reducing dark current and improving photoelectric conversion efficiency.

Inactive Publication Date: 2015-06-03
BEIJING INFORMATION SCI & TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current detection of CdTeO by the SILAR method 3 Quantum dots doped with Mg as a sensitizer to improve the performance parameters of p-type NiO-based quantum dot-sensitized solar cells has not been reported

Method used

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  • Mg-doped CdTeO3 QDSC (Quantum Dots-Sensitized Solar Cell) and preparation method thereof
  • Mg-doped CdTeO3 QDSC (Quantum Dots-Sensitized Solar Cell) and preparation method thereof
  • Mg-doped CdTeO3 QDSC (Quantum Dots-Sensitized Solar Cell) and preparation method thereof

Examples

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Effect test

Embodiment 1

[0022] The specific steps of the magnesium-doped cadmium tellurite quantum dot sensitizer and its preparation method are:

[0023] 1) Equipped with Cd(NO at a concentration of 0.01M 3 ) 2 solution and Na 2 TeO 3 solution, put it in a water bath at 20-50°C for 30-60min;

[0024] 2) MgCl 2 Add the Cd(NO 3 ) 2 solution, in which Mg 2+ with Cd 2+ The ratio of the number of atoms is 1:10;

[0025] 3) Put the solution obtained in step 2) into a water bath at 30°C for 30 minutes;

[0026] 4) Immerse the photocathode material NiO to be sensitized in the solution prepared in step 3) for 5 minutes, take it out, clean it with the corresponding solvent, and dry it with a heating table;

[0027] 5) Immerse the photocathode material obtained in step 4) into the Na prepared in step 1) 2 TeO 3 solution for 5 minutes, take it out and clean it with a corresponding solvent, and dry it with a heating platform, then Mg-doped CdTeO is formed on the photocathode material 3 quantum dot s...

Embodiment 2

[0029] The specific steps of the magnesium-doped cadmium tellurite quantum dot sensitizer and its preparation method are:

[0030] 1) Equipped with Cd(NO at a concentration of 0.01M 3 ) 2 solution and Na 2 TeO 3 solution, put it in a water bath at 20-50°C for 30-60min;

[0031] 2) MgCl 2 Add the Cd(NO 3 ) 2 solution, in which Mg 2+ with Cd 2+ The ratio of the number of atoms is 1:50;

[0032] 3) Put the solution obtained in step 2) into a water bath at 30°C for 30 minutes;

[0033] 4) Immerse the photocathode material NiO to be sensitized in the solution prepared in step 3) for 5 minutes, take it out, clean it with the corresponding solvent, and dry it with a heating table;

[0034] 5) Immerse the photocathode material obtained in step 4) into the Na prepared in step 1) 2 TeO 3 solution for 5 minutes, take it out and clean it with a corresponding solvent, and dry it with a heating platform, then Mg-doped CdTeO is formed on the photocathode material 3 quantum dot s...

Embodiment 3

[0036] The specific steps of the magnesium-doped cadmium tellurite quantum dot sensitizer and its preparation method are:

[0037] 1) Equipped with Cd(NO at a concentration of 0.01M 3 ) 2 solution and Na 2 TeO 3 solution, put it in a water bath at 20-50°C for 30-60min;

[0038] 2) MgCl 2 Add the Cd(NO 3 ) 2 solution, in which Mg 2+ with Cd 2+ The ratio of the number of atoms is 1:100;

[0039] 3) Put the solution obtained in step 2) into a water bath at 30°C for 30 minutes;

[0040] 4) Immerse the photocathode material NiO to be sensitized in the solution prepared in step 3) for 5 minutes, take it out, clean it with the corresponding solvent, and dry it with a heating table;

[0041] 5) Immerse the photocathode material obtained in step 4) into the Na prepared in step 1) 2 TeO 3 solution for 5 minutes, take it out and clean it with a corresponding solvent, and dry it with a heating platform, then Mg-doped CdTeO is formed on the photocathode material 3 Quantum dot ...

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Abstract

The invention relates to an Mg-doped CdTeO3 quantum dot sensitizer for a solar cell and a preparation method of the Mg-doped CdTeO3 quantum dot sensitizer. The preparation method is characterized by doping Mg impurity atoms in CdTeO3 quantum dots which is used as a sensitizer and is assembled into a QDSC (Quantum Dots-Sensitized Solar Cell). By optimizing a transmission path of electron holes in the QDSC, thus the electron holes can be more quickly separated, the electron holes can be more effectively injected in a valence band of NiO, dark current is reduced, and the short-circuit current and the photoelectric conversion efficiency of the solar cell are increased. The preparation method is simple, easy to operate, low in cost and capable of being manufactured in a large scale.

Description

technical field [0001] The invention belongs to the technical field of solar energy, and more specifically relates to a doped quantum dot sensitizer for solar cells and a preparation method thereof. Background technique [0002] In recent years, human society is facing serious problems of deteriorating environment and increasing energy shortage. The energy crisis has intensified. However, today's energy supply still mainly depends on fossil energy. With the gradual depletion of fossil fuels and the increasing environmental pollution Increasingly, people have to look for new renewable energy sources. Safe, reliable, and pollution-free solar energy is undoubtedly the first choice for human future energy development. Therefore, using solar energy as a source of new energy supply has attracted the most attention, and it has received close attention from all walks of life in terms of technological development process and future prospects. A device that directly converts light e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/20H01G9/035
Inventor 邹小平赵川何胜
Owner BEIJING INFORMATION SCI & TECH UNIV
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