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首页> 外文期刊>Journal of Applied Physics >Extracting reliable electronic properties from transmission spectra of indium tin oxide thin films and nanocrystal films by careful application of the Drude theory
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Extracting reliable electronic properties from transmission spectra of indium tin oxide thin films and nanocrystal films by careful application of the Drude theory

机译：仔细应用德鲁理论从铟锡氧化物薄膜和纳米晶体薄膜的透射光谱中提取可靠的电子性质

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摘要

Analysis of the transmittance and reflectance of transparent conducting oxide thin films and nanocrystal films can be accurately modeled using the Drude free electron theory to extract electrical transport properties if enough care is taken. However, several fits starting from different initial guesses are needed before confidence in the extracted Drude parameters can be obtained. Film thickness, optical carrier concentration, and optical carrier mobility can be reliably derived when using either a fully empirical or semiempirical model for the ionized impurity scattering. The results are in good agreement with those based on more arduous spectroscopic ellipsometry measurements. Furthermore, fitting the reflectance along with the transmittance reduces the uncertainty, but does not significantly affect the values of the extracted parameters.
机译：如果充分注意，可以使用Drude自由电子理论准确地对透明导电氧化物薄膜和纳米晶体薄膜的透射率和反射率进行建模，以提取电传输特性。但是，在获得对提取的Drude参数的置信度之前，需要从不同的初始猜测开始进行多次拟合。使用完全经验或半经验模型进行离子化杂质散射时，可以可靠地得出膜厚度，光学载流子浓度和光学载流子迁移率。结果与基于更艰巨的椭圆偏振光谱测量的结果非常吻合。此外，将反射率与透射率一起拟合可减少不确定性，但不会显着影响提取参数的值。

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  • 来源
    《Journal of Applied Physics》 |2012年第6期|p.063515.1-063515.9|共9页
  • 作者

    Rueben J. Mendelsberg; Guillermo Garcia; Delia J. Milliron;

  • 作者单位

    Lawrence Berkeley National Laboratory, Plasma Applications Group, Berkeley, California 94720, USA Lawrence Berkeley National Laboratory, The Molecular Foundry, Berkeley, California 94720, USA;

    Lawrence Berkeley National Laboratory, The Molecular Foundry, Berkeley, California 94720, USA;

    Lawrence Berkeley National Laboratory, The Molecular Foundry, Berkeley, California 94720, USA;

  • 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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