Effect of AZO seed layer on electrochemical growth and optical properties of ZnO nanorod arrays on ITO glass

Effect of AZO seed layer on electrochemical growth and optical properties of ZnO nanorod arrays on ITO glass

We report the structural and optical properties of ZnO nanorod arrays (NRAs) grown by an electrochemical deposition process. The ZnO NRAs were grown on indium tin oxide (ITO) coated glass substrates with a thin sputtered Al-doped ZnO (AZO) seed layer and compared with ones directly grown without the...

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Veröffentlicht in:Nanotechnology 2011-11, Vol.22 (44), p.445602-1-8
Hauptverfasser: Lee, Hee Kwan, Kim, Myung Sub, Yu, Jae Su
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Arrays
Azo
Glass
Indium tin oxide
Nanostructure
Seeds
Transmittance
Zinc oxide
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Kim, Myung Sub
Yu, Jae Su
description We report the structural and optical properties of ZnO nanorod arrays (NRAs) grown by an electrochemical deposition process. The ZnO NRAs were grown on indium tin oxide (ITO) coated glass substrates with a thin sputtered Al-doped ZnO (AZO) seed layer and compared with ones directly grown without the seed layer. The growth condition dependence of ZnO NRAs was investigated for various synthetic parameters. The morphology and density of the ZnO NRAs were accordingly controlled by means of zinc nitrate concentration and growth time. From photoluminescence results, the ultraviolet emission was significantly enhanced after thermal treatment. For ZnO NRAs grown on ITO glass without the seed layer, the diffuse transmittance was enhanced despite the reduction in the total transmittance, indicating a high haze value. By using a thin AZO seed layer, the well-aligned ZnO NRAs on AZO/ITO glass are controllably and reproducibly synthesized by varying the growth parameters, exhibiting a total transmittance higher than 91% in the visible wavelength range as well as good optical and crystal quality.
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subjects Arrays
Azo
Glass
Indium tin oxide
Nanostructure
Seeds
Transmittance
Zinc oxide
title Effect of AZO seed layer on electrochemical growth and optical properties of ZnO nanorod arrays on ITO glass
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