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Method for preparing Al mixed with ZnO nanosheet array by adopting pulsed electromagnetic field

A pulsed electromagnetic field and nanosheet array technology, which is applied in photosensitive equipment, photovoltaic power generation, etc., can solve the problems of small height/thickness ratio, difficult control of ZnO nanosheet structure and low order degree, and achieve high verticality, Facilitate electron transport and increase absorption

Inactive Publication Date: 2012-09-26
LIAONING UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to control the morphology of the ZnO nanosheet structure, and there are problems such as a low degree of order and a small height / thickness ratio.

Method used

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  • Method for preparing Al mixed with ZnO nanosheet array by adopting pulsed electromagnetic field
  • Method for preparing Al mixed with ZnO nanosheet array by adopting pulsed electromagnetic field
  • Method for preparing Al mixed with ZnO nanosheet array by adopting pulsed electromagnetic field

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Such as figure 1 As shown, the method for preparing Al-doped ZnO nanosheet arrays is as follows:

[0030] 1. Put the FTO conductive glass sheet (size: 20×20×3mm) into 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;

[0031] 2. Using ethylene glycol methyl ether as a solvent, prepare mixed solution I with 2ml zinc acetate, 2ml ethanolamine and 15ml ethylene glycol methyl ether;

[0032] 3. Take 3ml of the prepared mixed solution I and drop it on the conductive glass sheet. After coating the solution evenly with a glue homogenizer, place the FTO conductive glass sheet coated with the mixed solution in a tubular heating furnace for heat treatment and heat it to 320°C. , keep warm for 18min, and cool to room temperature;

[0033] 4. Repeat the third step 4 times to obtain a dense and uniform ZnO film on the FTO conductive glass sheet;

[0034] 5. Add 0.01mol aluminum nitrat...

Embodiment 2

[0038] 1. Put the FTO conductive glass sheet (size: 20×20×3mm) in an ultrasonic cleaner at a temperature of 75°C for 4 minutes, take it out, rinse it with deionized water, and dry it in a vacuum oven for 4 hours;

[0039] 2. Using ethylene glycol methyl ether as a solvent, prepare mixed solution I with 3ml zinc acetate, 4ml ethanolamine and 24ml ethylene glycol methyl ether;

[0040] 3. Take 6ml of the prepared mixed solution I and drop it on the conductive glass sheet. After coating the solution evenly with a glue homogenizer, place the FTO conductive glass sheet coated with the mixed solution in a tubular heating furnace for heat treatment and heat it to 300°C. , keep warm for 15min, and cool to room temperature;

[0041] 4. Repeat the third step 5 times to obtain a dense and uniform ZnO film on the FTO conductive glass sheet;

[0042]5. Add 0.01mol aluminum nitrate, 0.49mol zinc nitrate and 0.5mol hexamethylenetetramine to 25L deionized water to prepare mixed solution II, ...

Embodiment 3

[0045] 1. 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;

[0046] 2. Using ethylene glycol methyl ether as a solvent, prepare mixed solution I with 4ml zinc acetate, 6ml ethanolamine and 31ml ethylene glycol methyl ether;

[0047] 3. Take 12ml of the prepared mixed solution I and drop it on the conductive glass sheet. After coating the solution evenly with a glue homogenizer, place the FTO conductive glass sheet coated with the mixed solution in a tubular heating furnace for heat treatment and heat it to 340°C , keep warm for 20min, and cool to room temperature;

[0048] 4. Repeat the third step 3 times to obtain a dense and uniform ZnO film on the FTO conductive glass sheet;

[0049] 5. Add 0.01mol aluminum nitrate, 0.32mol zinc nitrate and 0.33mol hexamethylenetetramine to 13.2L deionized water to prepare mixed solution ...

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Abstract

The invention relates to a method for preparing Al mixed with ZnO nanosheet array by adopting a pulsed electromagnetic field, which is as follows: an FTO conductive sheet glass is placed in an ultrasonic cleaner for cleaning; the mixed solution I of zinc acetate, ethanol amine and ethylene glycol monomethyl ether is dripped on the conductive sheet glass, and is uniformly coated through a spin coater and heat treated to form a ZnO film thereon; the FTO conductive sheet glass coated with the ZnO film is put into a reaction kettle, the mixed solution II formed by aluminium nitrate, zinc nitrate and hexamethylene tetramine as well as deionized water is filled into the reaction kettle, the pulsed electromagnetic field treatment is applied to the reaction system in the reaction kettle, the kettle is moved to a constant temperature oven for hydrothermal reaction after the treatment, and the sediment on the surface of the glass is washed and dried after the hydrothermal reaction, so as to obtain the Al mixed with ZnO nanosheet array. The method is simple to operate, has low energy consumption, enables the orientation of the nanosheets to be identical, has higher verticality, enables the nanosheets to be neatly arrayed, has big specific surface area, facilitates electron transport when serving as the photoanode, and improves the efficiency of the dye sensitized solar cell.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, and in particular relates to a method for preparing an Al-doped ZnO nanosheet array by using a pulsed electromagnetic field. Background technique [0002] Dye-sensitized solar cell (DSSC) is a new type of solar cell, which has the advantages of low price, simple manufacturing process and environmental friendliness, and is expected to become the dominant new generation of solar cells. According to the linear transport theory, the transport of electrons in the single crystal array structure perpendicular to the conductive substrate has a very high transport rate and the lowest loss, which can reduce the electron transport time and help improve the battery conversion efficiency. Therefore, one-dimensional ZnO nanostructure arrays with high verticality as photoanode materials are the main research direction of solar dye-sensitized cells. [0003] At present, the methods for synthesi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/20
CPCY02E10/542
Inventor 王建中唐立丹王冰杜慧玲齐锦刚
Owner LIAONING UNIVERSITY OF TECHNOLOGY
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