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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >High-quality vertically aligned ZnO nanorods synthesized by microwave-assisted CBD with ZnO-PVA complex seed layer on Si substrates
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High-quality vertically aligned ZnO nanorods synthesized by microwave-assisted CBD with ZnO-PVA complex seed layer on Si substrates

机译：微波辅助CBD与Si衬底上ZnO-PVA复合晶种层合成的高质量垂直取向ZnO纳米棒

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摘要

We successfully synthesized vertically aligned zinc oxide (ZnO) nanorods on seeded silicon substrates using chemical bath deposition assisted by microwave heating. ZnO nanorods were grown on seed layers of ZnO-polyvinyl alcohol (PVA) nanocomposites spin-coated on p-type Si (111). The nanorod's diameter was found to be dependent on the annealing temperature of the ZnO-PVA seed layer. We produced ZnO nanorods with diameters in the range of 50-300 nm from five groups of seed layers annealed at 250 °C, 350 °C, 380 °C, 450 °C, and 550 °C. The nanorods were examined with X-ray diffraction, transmission electron microscopy, and field emission scanning electron microscopy, which revealed hexagonal wurtzite structures perpendicular to the substrate along the z-axis in the direction of (002). Photoluminescence measurements revealed high UV emission at a high I_(UV)/I_(vis) ratio of 175. We also conducted Raman scattering studies on the ZnO nanorods to estimate the lattice vibration modes.
机译：我们利用化学浴沉积和微波加热技术成功地在晶种硅基板上合成了垂直排列的氧化锌（ZnO）纳米棒。 ZnO纳米棒生长在旋涂在p型Si（111）上的ZnO-聚乙烯醇（PVA）纳米复合材料的种子层上。发现纳米棒的直径取决于ZnO-PVA种子层的退火温度。我们通过在250°C，350°C，380°C，450°C和550°C下退火的五组种子层生产了直径在50-300 nm范围内的ZnO纳米棒。用X射线衍射，透射电子显微镜和场发射扫描电子显微镜检查纳米棒，其揭示了沿（002）方向沿z轴垂直于衬底的六方纤锌矿结构。光致发光测量结果表明，在I_（UV）/ I_（vis）比率为175时，UV辐射较高。我们还对ZnO纳米棒进行了拉曼散射研究，以估计晶格振动模式。

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