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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Synthesis and characterization of dendritic ZnMgO nanostructures
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Synthesis and characterization of dendritic ZnMgO nanostructures

机译:树枝状ZnMgO纳米结构的合成与表征

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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 similar to 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.
机译:采用无催化剂的热蒸发法,以Zn和Mg为原料,在Si(111)衬底上合成了树枝状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来研究其结构,组成和光学性质。结果表明,在所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,可以形成六方晶状的ZnMgO,同时保持树枝状纳米结构,该结构在近带边缘发射中的蓝移类似于0.05 eV。可以简单地通过改变衬底与源材料之间的距离来调整纳米结构中的Mg含量。

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