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Correlation between the static refractive index and the optical bandgap: Review and new empirical approach
Physica B: Condensed Matter ( IF 2.8 ) Pub Date : 2021-07-26 , DOI: 10.1016/j.physb.2021.413246
Hosam M. Gomaa 1 , I.S. Yahia 2, 3, 4 , H.Y. Zahran 2, 3, 4
Affiliation  

The refractive index of different types of materials, like semiconductors, insulators, oxides, thin-films, and glasses, has been reported in many publications in attempts to estimate how it can be correlated to the optical bandgap. By reviewing of the previous studies to correlate the optical refractive index and energy gap led to concluded that Reddy Ahmmed approximation was selected to develop a new realized form that can give a good fit to the experimental data and, hence, be used directly as an accurate formula in the theoretical studies. The obtained formula correlates the optical refractive index to the energy gap and the oxygen atom's electronegativity. Such relation has been used to calculate the refractive indices for more than 96 materials (elements/compounds) with a high agreement with the experimental data.



中文翻译:

静态折射率和光学带隙之间的相关性:回顾和新的经验方法

许多出版物都报道了不同类型材料(如半导体、绝缘体、氧化物、薄膜和玻璃)的折射率,试图估计其与光学带隙的相关性。通过回顾以前将光学折射率和能隙相关联的研究得出的结论是,选择 Reddy Ahmmed 近似来开发一种新的实现形式,该形式可以很好地拟合实验数据,因此可以直接用作准确的理论研究中的公式。获得的公式将光学折射率与能隙和氧原子的电负性相关联。这种关系已被用于计算超过 96 种材料(元素/化合物)的折射率,与实验数据高度一致。

更新日期:2021-07-26
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