Synthesis and characterization of dendritic ZnMgO nanostructures

Synthesis and characterization of dendritic ZnMgO nanostructures
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树枝状ZnMgO纳米结构的合成与表征

DOI:
10.1088/0022-3727/39/17/009
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发表时间:
2006-09
影响因子:
3.4
通讯作者:
Yang, Fan
Yang, Fan
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
He, Haiping;Zhao, Binghui;Zhi, Mingjia;Tang, Haiping;Ye, Zhizhen;Zhu, Liping;Yang, Fan

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以Zn粉和Mg粉为原料,采用无催化剂热蒸发法在Si(111)衬底上制备了树枝状ZnMgO纳米结构。通过场发射扫描电子显微镜、X射线衍射、透射电子显微镜、拉曼散射和光致发光研究了样品的结构、组成和光学性质。结果表明,在生长的纳米结构中,掺入的Mg主要形成分离的立方MgO相。通过在氧气中退火,可以形成六角ZnMgO与树枝状纳米结构的保持,表现出近带边发射的蓝移为0.05 eV。可以简单地通过改变衬底和源材料之间的距离来调节纳米结构中的Mg含量。
Dendritic ZnMgO nanostructures were synthesized on Si(111) substrates by a catalyst-free thermal evaporation method using Zn and Mg powder as the source materials. The structural, compositional and optical properties were investigated by field emission scanning electron microscopy, x-ray diffraction, transmission electron microscopy, Raman scattering and photoluminescence. The results indicate that the incorporated Mg in the as-grown nanostructures mainly form a separated cubic MgO phase. By annealing in oxygen, hexagonal ZnMgO can be formed with the dendritic nanostructures maintained, which exhibits a blueshift of ∼0.05 eV in the near band edge emission. It is possible to tune the Mg content in the nanostructures simply by varying the distance between the substrate and the source materials.
DOI: 10.1021/jp0552426
发表时间: 2005-11
期刊: The journal of physical chemistry. B
影响因子: --
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