Structures, growth mechanism and optical properties of Ag-ZnO cored nanotubes

•Ag-ZnO cored nanotube have been firstly synthesized by CVD.•The morphologies and structure of Ag-ZnO cored nanotube are investigated.•The PL properties of Ag-ZnO cored nanotube are investigated.•The mechanism of growth and PL for Ag-ZnO cored nanotube is analyzed. In this paper, Ag-ZnO cored nanotu...

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Bibliographic Details
Published in:Materials letters 2019-01, Vol.234, p.191-195
Main Authors: Zhang, Ke-Xin, Cai, Yu, Yao, Cheng-Bao, Wen, Xing, Han, Yue, Yin, Hai-Tao, Sun, Wen-Jun, Li, Qiang-Hua
Format: Article
Language:English
Subjects:
Absorption spectra
Chemical synthesis
Chemical vapor deposition
Chemical vapour deposition
Diffraction
Emission
Emissions
Luminescence
Materials science
Morphology
Nanocomposites
Nanotubes
Optical materials and properties
Optical properties
Organic chemistry
Photoluminescence
Wurtzite
X ray spectra
X-ray diffraction
Zinc oxide
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Summary:•Ag-ZnO cored nanotube have been firstly synthesized by CVD.•The morphologies and structure of Ag-ZnO cored nanotube are investigated.•The PL properties of Ag-ZnO cored nanotube are investigated.•The mechanism of growth and PL for Ag-ZnO cored nanotube is analyzed. In this paper, Ag-ZnO cored nanotubes were synthesized by a simple chemical vapor deposition method. The morphology and elemental components of the core inside and the nanotube outside of Ag-ZnO cored nanotube were characterized. The X-ray diffraction result showed two series of characteristic peaks, which were connected with hexagonal wurtzite ZnO and face-centered cubic Ag. The growth behaviour of Ag-ZnO cored nanotubes was explained by vapor-liquid-solid mechanism. The optical absorption spectrum showed an absorption peak at 378 nm and the photoluminescence results demonstrated a weak emission peak in the ultraviolet region which was due to the near-band-edge emission as well as three emission peaks in the visible region which were due to the defect level emission.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2018.09.100