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首页> 外文期刊>Microelectronic Engineering >Effects of temperature on the optical and electrical properties of ZnO nanoparticles synthesized by sol-gel method
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Effects of temperature on the optical and electrical properties of ZnO nanoparticles synthesized by sol-gel method

机译：温度对溶胶-凝胶法合成ZnO纳米粒子光电性能的影响

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摘要

ZnO nanoparticles for different thermal treatment temperatures were prepared by using sol-gel method under supercritical drying of ethyl alcohol. The structural properties showed that the ZnO nanoparticles exhibit hexagonal wurtzite structure. Thus, in the case of thermal treatment at 500 ℃ in air, the powder with an average particle size of 40 nm shows a strong luminescence band around 384 nm in the UV range. However, the optical band gap of our samples varied between 3.34 and 3.21 eV with increasing annealing temperature. The imaginary and real parts of the sample impedance versus frequency, were studied in the range of 40 Hz-2 MHz. The Nyquist diagrams were used to identify an equivalent circuit and the fundamental parameters of the circuit. The characteristics of crystallinity, morphology, photoluminescence and electrical conductivity of ZnO nanoparticles were investigated.
机译：在乙醇超临界干燥条件下，采用溶胶-凝胶法制备了不同热处理温度的ZnO纳米粒子。结构性质表明，ZnO纳米颗粒具有六角纤锌矿结构。因此，在空气中于500℃进行热处理的情况下，平均粒径为40 nm的粉末在UV范围内在384 nm附近显示出很强的发光带。但是，随着退火温度的升高，我们样品的光学带隙在3.34和3.21 eV之间变化。在40 Hz-2 MHz的范围内研究了样品阻抗的虚部和实部与频率的关系。奈奎斯特图用于识别等效电路和电路的基本参数。研究了ZnO纳米颗粒的结晶度，形貌，光致发光和导电性。

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  • 来源
    《Microelectronic Engineering》 |2014年第10期|53-58|共6页
  • 作者

    K. Omri; I. Najeh; R. Dhahri; J. El Ghoul; L. El Mir;

  • 作者单位

    Laboratory of Physics of Materials and Nanomaterials Applied at Environment (LaPhyMNE), Gabes University, Faculty of Sciences in Gabes, Gabes, Tunisia;

    Laboratory of Physics of Materials and Nanomaterials Applied at Environment (LaPhyMNE), Gabes University, Faculty of Sciences in Gabes, Gabes, Tunisia;

    Laboratory of Physics of Materials and Nanomaterials Applied at Environment (LaPhyMNE), Gabes University, Faculty of Sciences in Gabes, Gabes, Tunisia;

    Laboratory of Physics of Materials and Nanomaterials Applied at Environment (LaPhyMNE), Gabes University, Faculty of Sciences in Gabes, Gabes, Tunisia,Al Imam Mohammad Ibn Saud Islamic University (IMSIU), College of Sciences, Department of Physics, Riyadh 11623, Saudi Arabia;

    Laboratory of Physics of Materials and Nanomaterials Applied at Environment (LaPhyMNE), Gabes University, Faculty of Sciences in Gabes, Gabes, Tunisia,Al Imam Mohammad Ibn Saud Islamic University (IMSIU), College of Sciences, Department of Physics, Riyadh 11623, Saudi Arabia;

  • 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
  • 中图分类
  • 关键词

    Zinc oxide; Nanoparticles; Sol-gel; Optical materials; Electrical conductivity;

    机译：氧化锌纳米颗粒;溶胶凝胶光学材料;电导率;

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