Preparation method of ZnO nano-rod array

A technology for nanorod arrays and preparation steps, which is applied in the field of preparation of ZnO nanorod arrays, can solve the problems of weak ultraviolet emission of ZnO nanorod arrays, and achieve the effect of low cost and simple process

Active Publication Date: 2012-05-30
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are various methods to prepare ZnO nanorod arrays, the UV emission of ZnO nanorod arrays is still weak.

Method used

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  • Preparation method of ZnO nano-rod array
  • Preparation method of ZnO nano-rod array
  • Preparation method of ZnO nano-rod array

Examples

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preparation example Construction

[0020] The invention provides a method for preparing a ZnO nanorod array, such as figure 1 As shown, the preparation process is as follows:

[0021] Step S1, substrate cleaning

[0022] Ultrasonic cleaning and drying of silicate glass, ITO conductive glass, FTO conductive glass, silicon wafer, sapphire and other substrate materials with acetone, alcohol, and deionized water in sequence;

[0023] Step S2, preparation of ZnO seed layer precursor solution

[0024] Add equimolar amounts of zinc salt (such as zinc acetate, zinc nitrate or zinc chloride, etc.) and ethanolamine (molar concentration is 0.025 ~ 0.3mol / L) into isopropanol in sequence, after fully stirring, seal and homogenize for 24 Hour;

[0025] Step S3, ZnO seed layer preparation

[0026] Transfer the substrate cleaned in step S1 to a homogenizer, add dropwise the ZnO seed layer precursor solution prepared in step S2, and after uniform dispersion, start the homogenizer and rotate at a speed of 2500 to 7500 rpm 1...

Embodiment 1

[0041] ZnO nanorod arrays with Ag nanoparticles adsorbed on the surface

[0042] (1) Base cleaning. The silicate glass is ultrasonically cleaned and dried with acetone, alcohol, and deionized water in sequence;

[0043] (2) ZnO seed layer preparation. First configure the seed layer precursor solution, dissolve zinc acetate and ethanolamine (0.025mol / L) in an equimolar amount in isopropanol in turn, after fully stirring, seal and homogenize for 24 hours; transfer the substrate to the homogenizer, drip Add the seed layer precursor solution, spin it at a speed of 2500 rpm for 20s after being uniformly dispersed; transfer the spin-coated substrate to a muffle furnace, and anneal for the first time at 350°C for 20min.

[0044] (3) Preparation of ZnO nanorods. First prepare the growth solution, dissolve equimolar zinc acetate and hexamethylenetetramine (0.1mol / L) in deionized water in turn to obtain the growth solution; immerse the substrate containing the seed layer in the growth ...

Embodiment 2

[0050] ZnO nanorod arrays with surface-adsorbed Au nanoparticles

[0051] (1) Base cleaning. The ITO conductive glass was ultrasonically cleaned and dried with acetone, alcohol, and deionized water in sequence.

[0052] (2) ZnO seed layer preparation. First configure the seed layer precursor solution, dissolve zinc acetate and ethanolamine (0.075mol / L) in an equimolar amount in isopropanol in turn, after fully stirring, seal and homogenize for 24 hours; transfer the substrate to the homogenizer, drip Add the seed layer precursor solution, and spin it at 6000 rpm for 10s after uniform dispersion; transfer the spin-coated substrate to a muffle furnace, and anneal for the first time at 600°C for 5min.

[0053] (3) Preparation of ZnO nanorods. First prepare the growth solution, dissolve equimolar zinc acetate and hexamethylenetetramine (0.05mol / L) in deionized water in turn to obtain the growth solution; immerse the substrate containing the seed layer in the growth solution, an...

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Abstract

The invention belongs to the field of luminescent materials, and discloses a preparation method of a ZnO nano-rod array. The preparation method comprises the following steps of: cleaning a substrate; preparing a ZnO seed layer precursor solution; preparing a ZnO seed layer; preparing the ZnO nano-rod array; and preparing adsorption metal nano-particles of the ZnO nano-rod array. For the ZnO nano-rod array provided by the invention, the metal nano-particles are introduced to the surface of each ZnO nano-rod, and the luminescent efficiency of the ZnO nano-rods is increased by using the surface plasma effect of the metal nano-particles so as to obtain the ZnO nano-rod array with excellent ultraviolet emission performance; meanwhile, the preparation method is simple in process, needs no expensive equipment, and is low in cost.

Description

technical field [0001] The invention relates to the field of photoelectric materials, in particular to a method for preparing a ZnO nanorod array with nanometer metal particles adsorbed on the surface. Background technique [0002] ZnO is a wide bandgap (Eg=3.4eV) direct bandgap semiconductor material with excellent piezoelectric, electrical and optical properties, and has been used to prepare gas sensors, ultrasonic oscillators, transparent electrodes for solar cells, etc. functional material devices. As a light-emitting material, ZnO is also widely used in light-emitting diodes, lasers, cathode ray luminescence and other fields, and has attracted widespread attention. [0003] Since Yang et al. synthesized ZnO nanorod arrays on a sapphire substrate in 2001 and observed ultraviolet laser emission under optical pump excitation in room temperature environment (M.Huang, S.Mao, H.Feick, H.Yan, Y .Wu, H.Kind, E.Weber, R.Russo, P.Yang, Science 2001, 292, 1897), the study of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/58C09K11/87C09K11/54B82Y30/00B82Y40/00
Inventor 周明杰廖秋荣马文波
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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