Abstract 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.

中文翻译：

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Ag-ZnO 纳米管的结构、生长机制和光学性质

摘要 本文采用简单的化学气相沉积方法合成了Ag-ZnO 核芯纳米管。表征了Ag-ZnO核纳米管内部核和纳米管外部的形态和元素成分。X射线衍射结果显示出两个系列的特征峰，分别与六方纤锌矿ZnO和面心立方Ag相连。Ag-ZnO 核纳米管的生长行为由气-液-固机理解释。光吸收光谱在 378 nm 处有一个吸收峰，光致发光结果表明在紫外区有一个微弱的发射峰，这是由于近带边发射造成的，在可见光区有三个发射峰，这是由于缺陷级发射。