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Method for preparing ZnO nano-rod array by pulse electromagnetic field

A nanorod array, pulsed electromagnetic field technology, applied in nanotechnology, zinc oxide/zinc hydroxide and other directions, can solve the problems of small aspect ratio and low verticality of ZnO nanorod array, and improve the photoelectric conversion efficiency and verticality. High, favorable effect of electron transport

Inactive Publication Date: 2012-06-27
LIAONING UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for preparing ZnO nanorod arrays by using a pulsed electromagnetic field to solve the problems of small aspect ratio and low verticality of ZnO nanorod arrays

Method used

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  • Method for preparing ZnO nano-rod array by pulse electromagnetic field
  • Method for preparing ZnO nano-rod array by pulse electromagnetic field
  • Method for preparing ZnO nano-rod array by pulse electromagnetic field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Such as figure 1 Shown, the method for preparing ZnO nanorod array is as follows:

[0026] Put the FTO conductive glass sheet (size: 20×20×3mm) in an ultrasonic cleaner at a temperature of 80°C for 5 minutes, take it out, rinse it with deionized water, and dry it in a vacuum oven for 5 hours; use zinc acetate, ethanolamine Prepare a mixed solution with ethylene glycol methyl ether, in which ethylene glycol methyl ether is used as a solvent, the volume ratio of zinc acetate:ethanolamine:ethylene glycol methyl ether=15:18:100, take 3ml of the prepared mixed solution and drop it on the conductive glass The sheet was coated evenly with a coating machine for coating, and the FTO conductive glass sheet coated with the mixed solution was placed in a tubular heating furnace, heated to 300 ° C, kept for 10 minutes, and cooled to room temperature; repeat the second step 4 times, in the A layer of dense and uniform ZnO film is obtained on the FTO conductive glass sheet.

[0027]...

Embodiment 2

[0030] Put the FTO conductive glass sheet (size: 20×20×3mm) in an ultrasonic cleaner at 75°C for 4 minutes, take it out, rinse it with deionized water, and dry it in a vacuum oven for 4 hours; use zinc acetate, ethanolamine Prepare a mixed solution with ethylene glycol methyl ether, in which ethylene glycol methyl ether is used as a solvent, the volume ratio of zinc acetate:ethanolamine:ethylene glycol methyl ether=8:8:100, take 1ml of the prepared mixed solution and drop it on the conductive glass The film was evenly coated on the sheet and coated with a coating machine, and the FTO conductive glass sheet coated with the mixed solution was placed in a tubular heating furnace, heated to 280 ° C, kept for 7 minutes, and cooled to room temperature; repeat the second step 3 times, in the A layer of dense and uniform ZnO film is obtained on the FTO conductive glass sheet.

[0031] Dissolve zinc chloride in deionized water to prepare a precursor solution with a concentration of 0.1...

Embodiment 3

[0033]Put the FTO conductive glass sheet (size: 20×20×3mm) in an ultrasonic cleaner at a temperature of 85°C for 6 minutes, take it out, rinse it with deionized water, and dry it in a vacuum oven for 6 hours; use zinc acetate, ethanolamine Prepare a mixed solution with ethylene glycol methyl ether, in which ethylene glycol methyl ether is used as a solvent, the volume ratio of zinc acetate:ethanolamine:ethylene glycol methyl ether=20:30:100, take 4ml of the prepared mixed solution and drop it on the conductive glass The sheet was coated evenly with a coating machine for coating, and the FTO conductive glass sheet coated with the mixed solution was placed in a tubular heating furnace, heated to 340 ° C, kept for 15 minutes, and cooled to room temperature; repeat the second step 5 times, in the A layer of dense and uniform ZnO film is obtained on the FTO conductive glass sheet.

[0034] Dissolve zinc chloride in deionized water to prepare a precursor solution with a concentratio...

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Abstract

The invention discloses a method for preparing a ZnO nano-rod array by a pulse electromagnetic field. The method provided by the invention solves the problem that the existing ZnO nano-rod array has a small length-diameter ratio and low verticality. The method provided by the invention comprises the following steps of putting fluorine-doped tin oxide (FTO) electrically-conductive glass into a supersonic wave washer, carrying out cleaning, dropwisely adding a mixed solution of zinc acetate, ethanolamine and ethylene glycol monomethyl ether on the cleaned FTO electrically-conductive glass, uniformly spreading the mixed solution on the cleaned FTO electrically-conductive glass by a spin coater, putting the cleaned FTO electrically-conductive glass coated with the mixed solution into a tube-type heating furnace, carrying out heating to obtain a ZnO film, dissolving zinc chloride into deionized water to obtain a precursor solution, adjusting a pH value of the precursor solution by ammonia water, putting the FTO electrically-conductive glass coated with the ZnO film into a reactor, pouring the precursor solution into the reactor, carrying out pulse electromagnetic field treatment on thereaction system in the reactor by a pulse electromagnetic field generation device, then transferring the reactor into an incubator, carrying out a hydro-thermal reaction process, washing off white precipitates on the surface of the FTO electrically-conductive glass by deionized water, putting the FTO electrically-conductive glass obtained by the previous step into a constant-temperature dry box and carrying out drying to obtain the ZnO nano-rod array. The method provided by the invention does not adopt a surfactant, and has simple processes, low energy consumption and no pollution.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, and in particular relates to a method for preparing a ZnO nanorod array by using a pulsed electromagnetic field, which lays a foundation for improving the efficiency of dye-sensitized solar cells. Background technique [0002] With the gradual depletion of fossil energy, the development of new energy and renewable energy, especially solar cell power generation technology, is a strategic requirement for China's future energy development. The main problem of solar cells is that they cannot replace traditional energy sources due to their high production costs, so how to reduce costs is the biggest problem in this industry. Dye-sensitized solar cells have the advantages of low price, simple manufacturing process, and environmental friendliness, and are expected to become the main body of solar cells in the future. However, the low conversion efficiency of dye-sensitized solar cells ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G9/02B82Y40/00
Inventor 王建中唐立丹王冰杜慧玲齐锦刚彭淑静于景媛
Owner LIAONING UNIVERSITY OF TECHNOLOGY
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