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A sulfur and selenium compound composite array preparation method

A selenium compound and composite array technology, applied in the field of solar cells, can solve problems such as complicated process, unsatisfactory product performance, and harsh conditions, and achieve broad application prospects, good electrochemical characteristics, catalytic performance, and mild reaction conditions.

Active Publication Date: 2016-01-27
HENAN NORMAL UNIV
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Problems solved by technology

[0003] Sulfur-selenium complexes of transition metals exhibit excellent physical and chemical properties due to their unique structures. At present, the methods for synthesizing sulfur-selenium complexes mainly include high-temperature thermal decomposition, solvothermal synthesis, gas-phase vulcanization and template methods. However, these synthetic methods generally have the defects of complicated process, harsh conditions and unsatisfactory product performance.

Method used

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  • A sulfur and selenium compound composite array preparation method
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) Dissolve 5mmol of cobalt nitrate in 50mL of distilled water, then add 10mmol of ammonium fluoride and 25mmol of urea, stir the solution evenly and transfer it to a reaction kettle with a conductive glass (FTO) sheet in the reaction kettle , then hydrothermally reacted at 120°C for 5h and then cooled to room temperature to obtain a conductive glass (FTO) sheet covered with basic cobalt carbonate;

[0018] (2) Add selenium powder and sulfur powder to solvent water and pass nitrogen gas (the molar ratio of selenium powder and sulfur powder is 1:2, the total molar weight of selenium powder and sulfur powder is 10mmol), and then add sodium borohydride (22mmol) solution, then add the conductive glass (FTO) sheet covered with basic cobalt carbonate obtained in step (1), continue to pass in nitrogen gas, take out the conductive glass sheet after soaking for 10h and clean it to obtain a composite array of sulfur-selenide compounds .

[0019] figure 1 The scanning electron ...

Embodiment 2

[0022] (1) Dissolve 5mmol of cobalt nitrate in 50mL of distilled water, then add 10mmol of ammonium fluoride and 25mmol of urea, stir the solution evenly and transfer it to a reaction kettle with a conductive glass (FTO) sheet in the reaction kettle , then hydrothermally reacted at 120°C for 5h and then cooled to room temperature to obtain a conductive glass (FTO) sheet covered with basic cobalt carbonate;

[0023] (2) Add selenium powder and sulfur powder to solvent ethanol and pass nitrogen gas (the molar ratio of selenium powder to sulfur powder is 1:1, the total molar weight of selenium powder and sulfur powder is 8mmol), and then add hydroboration Sodium (16mmol) solution, then add the conductive glass (FTO) sheet covered with basic cobalt carbonate obtained in step (1), continue to pass in nitrogen gas, take out the conductive glass sheet after soaking for 12 hours and clean it to obtain a sulfur-selenium compound compound array.

Embodiment 3

[0025] (1) Dissolve 5mmol of ferric nitrate in 50mL of distilled water, then add 10mmol of ammonium fluoride and 25mmol of urea, stir the solution evenly and transfer it to a reaction kettle with a conductive glass (FTO) sheet in the reaction kettle , then hydrothermally reacted at 120°C for 5h and then cooled to room temperature to obtain a conductive glass (FTO) sheet covered with basic iron carbonate;

[0026] (2) Add selenium powder and sulfur powder to the mixed solution of solvent water and ethanol and pass through argon gas (the molar ratio of selenium powder and sulfur powder is 1:2, and the total molar weight of selenium powder and sulfur powder is 10mmol ), then add sodium borohydride (20mmol) solution, and then add the conductive glass (FTO) sheet covered with basic iron carbonate obtained in step (1), continue to pass in argon gas, soak for 12h and take out the conductive glass sheet for cleaning After cleaning, a composite array of sulfur-selenium compounds is obt...

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Abstract

The invention provides a sulfur and selenium compound composite array preparation method and belongs to the technical field of solar cells. The sulfur and selenium compound composite array preparation method comprises the steps of preparing an electric conduction glass sheet with the surface covered with basic iron carbonate or basic cobalt carbonate and preparing a sulfur and selenium compound composite array. The preparation method is simple and the reaction conditions are moderate; obtained sulfur and selenium compound composite arrays have favorable electronic transmission channels and catalytic activity, thereby presenting favorable electrochemical properties and catalytic properties. The sulfur and selenium compound composite arrays can be better applied to counter electrodes of quantum dot sensitized solar cells and have broad application prospects in the field of solar cells.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and in particular relates to a preparation method of a sulfur-selenium compound composite array. Background technique [0002] Solar energy has the characteristics of low cost, no pollution and safe operation, and is inexhaustible, so it has become one of the most promising new energy sources. As the third generation of high-efficiency solar cells, quantum dot-sensitized solar cells have the advantages of low cost, simple fabrication and high theoretical efficiency, and have become a hot spot in the field of new energy. [0003] Sulfur-selenium complexes of transition metals exhibit excellent physical and chemical properties due to their unique structures. At present, the methods for synthesizing sulfur-selenium complexes mainly include high-temperature thermal decomposition, solvothermal synthesis, gas-phase vulcanization and template methods. However, these synthetic methods generally have...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/042H01G9/20
Inventor 武大鹏王红菊高志永徐芳安义鹏蒋凯
Owner HENAN NORMAL UNIV
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