Preparation and properties of ternary ZnMgO nanowires.
Preparation and properties of ternary ZnMgO nanowires.
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DOI：
10.1021/jp0552426
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发表时间：
2005-11
期刊：
影响因子：
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通讯作者：
Mingjia Zhi;Li-ping Zhu;Z. Ye;Fazhan Wang;Binghui Zhao
中科院分区：
文献类型：
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作者：
Mingjia Zhi;Li-ping Zhu;Z. Ye;Fazhan Wang;Binghui Zhao
以金属Zn和Mg为原料，采用无催化剂热蒸发法制备了不同形貌的Zn0.84Mg0.16O和Zn0.12Mg0.88O纳米线。采用X射线衍射（XRD）、场发射扫描电子显微镜（FESEM）、高分辨透射电子显微镜（HRTEM）和室温光致发光（PL）测试等手段对产物的结构和光学性能进行了表征。所得纳米线的直径在30 nm ~ 80 nm之间，晶化良好，为六方和立方相，Zn0.84Mg0.16O和Zn0.12Mg0.88O样品分别沿着c轴和a轴择优取向。对Zn_（0.84）Mg_（0.16）O样品在室温下分别在384.4和495.8 nm波长处观察到了光致发光。在Ar气氛中退火后，PL谱中的发射峰显示出明显的蓝移。
Zn0.84Mg0.16O and Zn0.12Mg0.88O nanowires with different morphology have been synthesized by a catalyst-free thermal evaporation method using Zn and Mg metals as the raw materials. X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), high-resolution transmission electron microscopy (HRTEM), and room-temperature photoluminescence (PL) measurements were used to determine the structure and optical properties of the obtained products. The obtained nanowires have diameters in a range of 30 nm-80 nm, crystallized well as hexagonal and cubic phase, with preferred orientation along the c-axis and a-axis for the two samples of Zn0.84Mg0.16O and Zn0.12Mg0.88O, respectively. Room-temperature PL at wavelengths of 384.4 and 495.8 nm has been observed for the sample of Zn0.84Mg0.16O. Upon annealing in Ar ambient, the emission peaks in PL spectra show a clearly blue shift.