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首页> 外文期刊>Zeitschrift fur Naturforschung, B. A Journal of Chemical Sciences >Effect of the Analytic Regions on the Quality Trend of Diamond-like/Graphitic Carbon Ratios in Raman Spectra
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Effect of the Analytic Regions on the Quality Trend of Diamond-like/Graphitic Carbon Ratios in Raman Spectra

机译：分析区域对拉曼光谱中类金刚石/石墨碳比质量趋势的影响

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摘要

Raman spectroscopy is a useful and non-destructive tool for the structural characterization of diamond-like carbon (DLC) films. Even though Raman spectroscopy is not a quantitative technique, the area integral intensity ratio of D and G peaks (I_D/I_G) derived by the fitting of separate Gaussian curves usually serves as an indicator of the quality trend of diamond-like material. However, conflicting reports still exist on the diamond-like films analyzed by the fitting method of Raman spectra. In this work we show that the quality trend of the diamond-like/graphitic carbon ratio is critically dependent upon the boundary conditions of the analytic regions. We also examine the possibility of directly applying the peak height ratio H_D/H_G as an alternative method to analyze Raman spectra. The method based on peak height ratios (H_D/H_G), and an established method using I_D/I_G ratios can give similar results depending on the choice, in the latter method, of the boundary conditions used for integration. However, the method based on the determination of peak heights avoids the arbitrary assignment of integral boundary conditions while additionally generating a data set that shows statistically smaller standard deviations than the commonly used integration method.
机译：拉曼光谱法是用于类金刚石碳（DLC）膜结构表征的有用且无损的工具。即使拉曼光谱法不是定量技术，通过拟合单独的高斯曲线得出的D和G峰的面积积分强度比（I_D / I_G）通常也可作为类金刚石材料质量趋势的指标。然而，通过拉曼光谱的拟合方法分析的类金刚石薄膜上仍然存在矛盾的报道。在这项工作中，我们表明，类金刚石/石墨碳比的质量趋势主要取决于分析区域的边界条件。我们还研究了直接应用峰高比H_D / H_G作为分析拉曼光谱的替代方法的可能性。基于峰高比（H_D / H_G）的方法以及使用I_D / I_G比的既定方法，可以根据在积分方法中对边界条件的选择，得出相似的结果。但是，基于确定峰高的方法避免了积分边界条件的任意分配，同时还生成了一个数据集，该数据集显示出比常用积分方法统计上更小的标准偏差。

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