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The fabrication and optical properties of highly crystalline ultra-long Cu-doped ZnO nanowires

机译：高结晶超长Cu掺杂ZnO纳米线的制备及光学性能

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摘要

We demonstrate the bulk synthesis of single crystalline Cu-doped ZnO nanowires using (CuI + ZnI_2) powders at 600 deg C. These mass nanowires are characterized through x-ray diffraction, scanning electron microscopy, energy dispersive x-ray spectroscopy, transmission electron microscopy (TEM), selected area electron diffraction, and high-resolution TEM; they have uniform diameters of about 65 nm and are several tens of microns in length. The growth of ZnCuO nanowires is suggested for self-catalyzed vapour-liquid-solid. In particular, the PL spectra of these nanowires show emission peaks that strongly shift to long wavelength with increasing Cu, and the doping quantity is found to be responsible for the different characteristics; the PL mechanism is explained in detail.
机译：我们展示了在600摄氏度下使用（CuI + ZnI_2）粉末的单晶掺杂Cu的ZnO纳米线的本体合成。这些质量纳米线的特征在于X射线衍射，扫描电子显微镜，能量色散X射线光谱，透射电子显微镜（TEM），选定区域电子衍射和高分辨率TEM;它们具有约65 nm的均匀直径，长度为几十微米。 ZnCuO纳米线的生长被建议用于自催化蒸气-液体-固体。尤其是，这些纳米线的PL光谱显示出随着Cu的增加，发射峰强烈地移向长波长，并且发现掺杂量是造成不同特性的原因。将详细说明PL机制。

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