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首页> 外文期刊>Optical and quantum electronics >Synthesis and optical functions distribution of CdSe nanorods/poly[2-methoxy-5-(2-ethylhexyloxy)-1, 4-phenylenevinylene] nanocomposites
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Synthesis and optical functions distribution of CdSe nanorods/poly[2-methoxy-5-(2-ethylhexyloxy)-1, 4-phenylenevinylene] nanocomposites

机译：CDSE纳米棒/聚[2-甲氧基-5-（2-乙基己氧基）-1,4-苯乙烯]纳米复合材料的合成和光学功能分布

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摘要

CdSe nanorods (NRs) are assembled using hydrothermal method using polyethylene glycol as a surfactant. The diameter and the length of the rods are found to be in the ranges of 10-30 and 80-210 nm, respectively. Besides, the CdSe NRs exhibit hexagonal structure with a crystallite size of 9.61 nm. Different concentration of CdSe NRs are mixed with poly [2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV). The structural features of the nanocomposites in the form of thin films prepared by spin-coating technique are studied by using of X-ray diffraction, field emission scanning microscope and atomic force microscope. The surface roughness of the MEH-PPV is calculated as 5.4 nm, which is significantly increased by the addition of CdSe NRs. Besides, the trans mi ttance and the reflectance of the nanocomposite films are measured at the normal incidence of the light over wavelength range 200-2500 nm. The optical functions such as absorption coefficient and refractive index of the films are calculated and analyzed. The optical band gap of MEH-PPV is determined as 1.95 eV and is decreased with increasing CdSe NRs content. In addition, the single oscillator model is used to evaluate the optical oscillator parameters. Finally, the ratio of the free carriers to their effective mass is found to increase by increasing CdSe content.
机译：使用聚乙二醇作为表面活性剂使用水热法组装CDSE纳米棒（NRS）。发现杆的直径和长度分别为10-30和80-210nm的范围。此外，CDSE NRS表现出六角形结构，微晶尺寸为9.61nm。将不同浓度的CDSE NR与聚[2-甲氧基-5-（2-乙基己氧基）-1,4-苯乙烯]（MeH-PPV）混合。通过使用X射线衍射，场发射扫描显微镜和原子力显微镜研究通过旋涂技术制备的薄膜形式的纳米复合材料的结构特征。 MeH-PPV的表面粗糙度计算为5.4nm，通过添加Cdse NRS显着增加。此外，纳米复合膜的反式MI TTACE和纳米复合膜的反射率在200-2500nm的光线的正常发生率下测量。计算并分析诸如薄膜的吸收系数和折射率的光学功能。 MeH-PPV的光带隙被确定为1.95eV，随着CDSE NRS含量的增加而降低。另外，单个振荡器模型用于评估光学振荡器参数。最后，通过增加CDSE含量，发现自由载体与其有效肿块的比例增加。

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  • 来源
    《Optical and quantum electronics》 |2021年第7期|393.1-393.16|共16页
  • 作者

    M. A. Farag; E. M. El-Menyawy; M. M. El-Nahass; T. Abdallah; G. M. Youssef;

  • 作者单位

    Physics Department Faculty of Science Ain Shams University Abbasia Cairo Egypt;

    Solid-State Electronics Laboratory Solid-State Physics Department Physics Research Division National Research Centre 33 El-Bohouth St. Dokki Giza 12622 Egypt;

    Physics Department Faculty of Education Ain Shams University Heliopolis Cairo Egypt;

    Physics Department Faculty of Science Ain Shams University Abbasia Cairo Egypt;

    Physics Department Faculty of Science Ain Shams University Abbasia Cairo Egypt;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    CdSe nanorods; Structural properties; Nanocomposites; Optical functions;

    机译：CDSE纳米棒;结构性;纳米复合材料;光学功能;

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