Correlation Between Refractive Index and Electronegativity Difference for $A^{N}B^{8-N}$ Type Binary Semiconductors

A simple correlation between the high-frequency refractive index and electronegativity difference has been established for large number of $A^{N}B^{8-N}$ type binary semiconductors. The proposed relation has been applied satisfactorily to evaluate the refractive index of binary semiconductors belonging to groups I-VII, II-VI, III-V and IV-VI. The estimated values of refractive index from present relation are utilized to calculate the electronic polarizability of compounds by applying the Lorentz-Lorentz formula. Our calculated values of refractive index and electronic polarizability are in good agreement with the values evaluated by earlier researchers.