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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >Band gap engineering of ZnO by doping with Mg
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Band gap engineering of ZnO by doping with Mg

机译：镁掺杂ZnO的带隙工程

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摘要

Mg-doped zinc oxide (MgxZn1-xO (0 <= x <= 0.20)) samples were synthesized by polymeric precursor method. The structural and optical properties were investigated by x-ray diffractometer (XRD), field emission scanning electron microscope (FE-SEM), UV-visible spectroscopy, Fourier transform infrared (FTIR) and Raman spectroscopy. XRD patterns reveal that synthesized samples have a wurtzite structure. Lattice parameters, the degree of distortion of the samples were calculated from the XRD. SEM images show that the synthesized samples contain the elongated spherical shaped grains. The Raman scattering investigation and FTIR spectra authenticate the presence of Mg in the system and also show phase segregation at the higher Mg doping concentration. Optical band gap energy is determined from the Tauc relation. It is interesting to know that optical band energy exhibits blue shift with the increase of Mg doping concentration up to 16 mole %.
机译：通过聚合物前驱体方法合成了Mg掺杂的氧化锌（MgxZn1-xO（0 <= x <= 0.20））样品。通过X射线衍射仪（XRD），场发射扫描电子显微镜（FE-SEM），紫外可见光谱，傅立叶变换红外光谱（FTIR）和拉曼光谱研究了结构和光学性质。 XRD图谱表明合成样品具有纤锌矿结构。从XRD计算出晶格参数，样品的变形程度。 SEM图像显示合成的样品包含细长的球形晶粒。拉曼散射研究和FTIR光谱验证了系统中Mg的存在，并且还显示了在较高Mg掺杂浓度下的相分离。根据Tauc关系确定光带隙能量。有趣的是，随着Mg掺杂浓度增加到16摩尔％，光带能量会呈现蓝移。

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