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首页> 外文期刊>Journal of Applied Physics >Annealing Effects On Optical Properties Of Low Temperature Grown Znonanorod Arrays
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Annealing Effects On Optical Properties Of Low Temperature Grown Znonanorod Arrays

机译：退火对低温生长的Znonanorod阵列的光学性能的影响

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摘要

Vertically well-aligned ZnO nanorods on Si substrates were prepared by a two-step chemical bath deposition method. The structure and optical properties of the grown ZnO nanorods were investigated by Raman and photoluminescence spectroscopy. The results showed that after an annealing treatment at around 500 ℃ in air atmosphere, the crystal structure and optical properties became much better due to the decrease in surface defects. The resonant Raman measurements excited by 351.1 nm not only revealed that the surface defects play a significant role in the as-grown sample, which was supported by low temperature time-resolved photoluminescence measurements, but also suggested that the strong intensity increase in some Raman scatterings was due to both outgoing resonant Raman scattering effect and deep level defect scattering contribution for ZnO nanorods annealed from 500 to 700 ℃.
机译：通过两步化学浴沉积法制备了硅衬底上垂直良好取向的ZnO纳米棒。通过拉曼光谱和光致发光光谱研究了生长的ZnO纳米棒的结构和光学性质。结果表明，在空气中约500℃退火处理后，由于减少了表面缺陷，晶体结构和光学性能变得更好。 351.1 nm激发的共振拉曼测量不仅表明表面缺陷在生长的样品中起着重要作用，而低温时间分辨光致发光测量也证明了这种缺陷，而且还表明某些拉曼散射的强度大大增加这是由于500到700℃退火的ZnO纳米棒的出射共振拉曼散射效应和深能级缺陷散射贡献所致。

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  • 来源
    《Journal of Applied Physics》 |2009年第5期|146-152|共7页
  • 作者

    L. L. Yang; Q. X. Zhao; M. Willander; J. H. Yang; I. Ivanov;

  • 作者单位

    Department of Science and Technology (ITN), Linkoeping University, SE-60174 Norrkoeping, Sweden;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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