Method for preparation and regulation of surface-roughness ZnO nano-cone or nanorod array

A nanorod array and surface roughening technology, which is applied in the field of nanomaterials, can solve the problems of ZnO nanocone or nanorod surface smoothness and difficult surface roughness control, so as to improve light extraction efficiency, increase specific surface area, and improve photocatalysis. efficiency effect

Inactive Publication Date: 2012-07-18
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Aiming at the problems of smooth surface of ZnO nanocones or nanorods and difficulty in controlling the surface roughness in various existing growth methods, the present invention prov

Method used

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  • Method for preparation and regulation of surface-roughness ZnO nano-cone or nanorod array
  • Method for preparation and regulation of surface-roughness ZnO nano-cone or nanorod array
  • Method for preparation and regulation of surface-roughness ZnO nano-cone or nanorod array

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Example Embodiment

[0027] Example 1

[0028] This embodiment is the process of preparing and roughening the ZnO nanocone array.

[0029] (1) Choose glass, plastic, Si wafer, LED or SiO 2 Any one of them is used as the substrate and cleaned;

[0030] (2) Sputter a dense ZnO seed layer with good crystallinity on the substrate at room temperature with a magnetron sputtering apparatus;

[0031] (3) Hydrothermal growth of ZnO nanocone array: Put the substrate with the ZnO seed layer prepared in step (2) into the polytetrafluoroethylene containing the precursor solution of the zinc source (zinc acetate, zinc nitrate or zinc sulfate solution) In the vinyl fluoride reactor, the concentration of the precursor solution of the zinc source is 0.02M-0.1M. The reactor is sealed in a stainless steel kettle jacket. The reactor and the kettle jacket are put together in a thermostat for heating and reaction. The reaction temperature is 80℃-100℃ The reaction time is 2-6 hours. After the reaction, it is cooled to room tem...

Example Embodiment

[0043] Example 2

[0044] This embodiment is the process of preparing and roughening the ZnO nanorod array.

[0045] (1) Choose glass, plastic, Si wafer, LED or SiO 2 Any one of them is used as the substrate and cleaned;

[0046] (2) Sputter a dense ZnO seed layer with good crystallinity on the substrate at room temperature with a magnetron sputtering apparatus;

[0047] (3) Use the hydrothermal method to grow the ZnO nanorod array with the parameters given in the experimental numbers in the following table: Put the substrate with the ZnO seed layer prepared in step (2) into the precursor solution containing the zinc source (zinc acetate , Zinc nitrate or zinc sulfate solution) in the beaker, the concentration of the precursor solution of the zinc source is 0.02M-0.1M, seal it with plastic wrap, and put it in a thermostat for heating reaction. The reaction temperature is 60℃-100℃, and the reaction time is 2- After 6 hours, the reaction was cooled down to room temperature, that is, a ...

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Abstract

The invention discloses a method for preparation and regulation of a surface-roughness ZnO nano-cone or nanorod array. The method comprises the following steps that: (1) a substrate is selected and cleaned; (2) a magnetic-control sputtering apparatus performs sputtering at a normal temperature on the substrate to form a compact ZnO seeding layer with good crystallinity; (3) the ZnO nano-cone or nanorod array grows on the substrate with a hydrothermal method; and different acid or alkali corrosive liquids are chosen, and the concentration and corrosion time of the corrosive liquids are adjusted to form a surface-roughness nanometer structure with different corrosion degrees. According to the invention, the simple method is adopted for manufacturing the complicated nanometer structure, the range of appearance regulation is large, the operation is simple, the regulation and control are easy, the repeatability is good, the surface roughness of a nano-cone or nanorod can be regulated effectively, the specific surface area is enlarged, and the properties such as surface activity are improved, so that the method is greatly beneficial to improving transducer sensitivity more effectively and enhancing photocatalysis efficiency as well as light extraction efficiency of an LED (light-emitting diode).

Description

technical field [0001] The invention relates to a zinc oxide (ZnO) nanocone or nanorod array method for preparing and regulating surface roughening, which can roughen the surface morphology of ZnO nanocones or nanorods to obtain a finer nanostructure on the surface, belonging to nanomaterials technology field. Background technique [0002] ZnO is a II-VI semiconductor with a hexagonal wurtzite structure, a wide direct band gap (3.37eV), and an exciton binding energy as high as 60meV, much larger than ZnS (22meV) and GaN (25meV). ZnO has piezoelectric and pyroelectric effects, and has good chemical, electrical, thermal stability, mechanical stability, etc. The photoluminescence and stimulated emission of ZnO have low thresholds, and it is easy to achieve efficient emission at room temperature. ZnO nanomaterials have broad application prospects in the fields of photoelectric conversion, sensors, nano-power generation systems, field emission devices, nano-lasers, and optoelec...

Claims

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Application Information

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IPC IPC(8): C01G9/02B82Y40/00
Inventor 吴拥中尹正茂郝霄鹏刘晓燕徐现刚
Owner SHANDONG UNIV
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