Synthesis and characterization of ZnO nanowires by thermal oxidation of Zn thin films at various temperatures.

Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry
Mohammad Reza KhanlaryAli Reyhani

Abstract

In this research high-quality zinc oxide (ZnO) nanowires have been synthesized by thermal oxidation of metallic Zn thin films. Metallic Zn films with thicknesses of 250 nm have been deposited on a glass substrate by the PVD technique. The deposited zinc thin films were oxidized in air at various temperatures ranging between 450 °C to 650 °C. Surface morphology, structural and optical properties of the ZnO nanowires were examined by scanning electron microscope (SEM), X-ray diffraction (XRD), energy dispersive X-ray (EDX) and photoluminescence (PL) measurements. XRD analysis demonstrated that the ZnO nanowires has a wurtzite structure with orientation of (002), and the nanowires prepared at 600 °C has a better crystalline quality than samples prepared at other temperatures. SEM results indicate that by increasing the oxidation temperature, the dimensions of the ZnO nanowires increase. The optimum temperature for synthesizing high density, ZnO nanowires was determined to be 600 °C. EDX results revealed that only Zn and O are present in the samples, indicating a pure ZnO composition. The PL spectra of as-synthesized nanowires exhibited a strong UV emission and a relatively weak green emission.

References

May 17, 2005·Nature Materials·Matt LawPeidong Yang
Mar 11, 2006·The Journal of Physical Chemistry. B·Soumitra KarDipankar Chakravorty
Jul 21, 2006·The Journal of Physical Chemistry. B·Lifen XuDongsheng Xu

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Citations

Jul 28, 2016·Langmuir : the ACS Journal of Surfaces and Colloids·Ibrahim AzadElias Stefanakos
Oct 31, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Mai M KhalafManal Hessien
May 21, 2015·Nanotechnology·Buddha Deka BoruahAbha Misra
Mar 24, 2021·Ecotoxicology and Environmental Safety·Ifra SaleemShafaqat Ali
Jul 24, 2018··Sumita ChoudharySubhashis Gangopadhyay

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Methods Mentioned

BETA
X-ray

Software Mentioned

Microstructure Measurement

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