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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Structure and photoluminescence of arrayed Zn1-xCoxO nanorods grown via hydrothermal method
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Structure and photoluminescence of arrayed Zn1-xCoxO nanorods grown via hydrothermal method

机译：水热法生长排列的Zn1-xCoxO纳米棒的结构和光致发光

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High density arrays of Zn1-xCoxO (x = 0.05, 0.10, 0.15, denoted by ZnCoO) nanorods were vertically grown on glass coated ZnO films via hydrothermal reaction at 70 degrees. The structures and morphology of the arrays were studied by x-ray diffraction, photoluminescence (PL) spectroscopy and field emission scanning electron microscopy, which show that the nanorods of 150 nm diameter and 4.5 nm length grow along the [0001] direction. X-ray photoemission spectroscopy demonstrated that Co was successfully doped into the nanorods. Ammonia concentration and ZnO buffer were found to play a very important role in the nucleation and growth of the ZnCoO nanorods. PL spectra were composed of broad ultraviolet (UV) emission and visible light. Using Gaussian simulation, the UV band was separated into two peaks, both of which were characteristic of redshift with the increase in Co concentration. The effect of the Co dopant on the broad ultraviolet emission peak and the formation mechanism of ZnCoO arrays were also discussed.
机译：Zn1-xCoxO（x = 0.05、0.10、0.15，以ZnCoO表示）的高密度阵列通过70度水热反应在玻璃涂层ZnO薄膜上垂直生长。通过X射线衍射，光致发光（PL）光谱和场发射扫描电子显微镜研究了阵列的结构和形态，结果表明直径150 nm和长度4.5 nm的纳米棒沿[0001]方向生长。 X射线光发射光谱表明，Co被成功地掺杂到纳米棒中。发现氨浓度和ZnO缓冲剂在ZnCoO纳米棒的成核和生长中起着非常重要的作用。 PL光谱由宽紫外线（UV）发射和可见光组成。使用高斯模拟，UV谱带被分为两个峰，这两个峰都是随着Co浓度增加而发生红移的特征。还讨论了Co掺杂剂对宽紫外发射峰的影响以及ZnCoO阵列的形成机理。

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