Optical studies on Rh2O3
Optical studies on Rh2O3
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Rh2O3 的光学研究
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
A. Roy
中科院分区：
文献类型：
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作者：
J. Ghose;A. Roy
在室温下观察到了 Rh2O3 的红外光谱和反射光谱。 X射线衍射图表明样品具有刚玉结构。红外光谱显示在 706,647,597,456 和 266 cm−1 处存在 5 个峰，对应于刚玉结构。光学常数 (n,K) 通过 Kramers-Kroning 分析从 200-1200 nm 波长区域记录的反射光谱中确定，遵循涉及反射衰减直线近似的程序。 Rh2O3 显示出 3.4 eV 的直接带隙和 1.22 eV 的间接带隙。
IR and reflectance spectra of Rh2O3 have been observed at room temperature. X-ray diffraction pattern show that the sample has the corundum structure. The IR spectra shows the presence of 5 peaks at 706,647,597,456 and 266 cm−1, corresponding to the corundum structure. Optical constants (n,K) were determined by a Kramers-Kroning analysis from the reflectance spectra recorded in the 200–1200 nm wavelength region following a procedure involving a straight line approximation of the reflection attenuation. Rh2O3 shows a direct band gap of 3.4 eV and an indirect band gap of 1.22 eV.