| UV-Vis-NIR反射光谱表征粉体材料的能隙值的方法 |
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| 引用本文： | 李秀艳,王强.UV-Vis-NIR反射光谱表征粉体材料的能隙值的方法[J].光谱实验室,2011,28(4):1824-1828. |
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| 作者姓名： | 李秀艳 王强 |
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| 作者单位： | 1. 北京服装学院材料科学与工程学院 北京市朝阳区樱花东街甲2号100029
2. 北京市服装材料研究开发与评价重点实验室 北京市100029 |
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| 基金项目： | 北京市教育委员会科技发展计划面上项目，北京市服装材料与纤维开发重点实验室开放课题资助项目 |
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| 摘 要： | 运用涂膜法和UV-Vis-NIR反射光谱,提出了表征粉体材料能隙值的新方法。结果表明,当Vcoloed/VTiO2（有色粉体与钛白的体积比）小于5%时,通过反射光谱可得到表征材料在该波段吸波特性的Kubellka-Munk函数F,即F=（1-R∞）2/2R∞（R∞是涂层无限厚时的反射率）。将Kubellka-Munk函数F对波长（以电子伏特表示）作图,就可以得到表征材料能隙值的曲线。该方法操作简单,节省原料,同时由于去除了有色粉体粒子间的相互干扰,在实际研究中具有普遍性。
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| 关 键 词： | 粉体材料 紫外-可见-近红外反射光谱 能隙值 |
Characterization of Energy Gap Values of Colored Powdery Materials by UV-Vis-NIR Reflectance Spectra |
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| LI Xiu-Yan,WANG Qiang.Characterization of Energy Gap Values of Colored Powdery Materials by UV-Vis-NIR Reflectance Spectra[J].Chinese Journal of Spectroscopy Laboratory,2011,28(4):1824-1828. |
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| Authors: | LI Xiu-Yan WANG Qiang |
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| Institution: | LI Xiu-Yan WANG Qianga(College of Materials Science and Engineering,Beijing Institute of Clothing Technology,Beijing 100029,P.R.China)a(Beijing Key Laboratory of Clothing Materials R ＆ D and Assessment,Beijing 100029,P.R.China) |
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| Abstract: | The new method for characterization of energy gaps values of powdery materials was investigated by UV-Vis-NIR reflectance spectra.When Vcoloed/VTiO2（volume ratio of colored powdered materials to titanium dioxide） was less than 5%,the Kubellka-Munk（K-M） function F=（1-R∞）2/2R∞（R∞ represents the coating reflectance when the film thick infinite） was obtained to characterize materials in that wave range.The energy gaps values of powdered materials can be estimated from K-M function of coating film plotted with wavelength（in the unit of electron volts）.The new method is conventional,and economizes raw materials,meanwhile that removes mutual interference between of color powdery grain,and has universality in factual study. |
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| Keywords: | Powdery Materials UV-Vis-NIR Reflectance Spectrum Energy Gap Value |
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