OPTICAL ELECTRONEGATIVITY AND REFRACTIVE-INDEX OF MATERIALS

Simple correlations between the energy gap, optical electronegativity and the refractive index are given for various classes of materials su ch as semiconductors, insulators and oxides. There has been no report in the literature on the direct estimation of optical electronegativit y for the wide variety of materials using energy gap values. The prese nt method performance is compared with Moss and Ravindra's relationshi ps. A simple analysis on the average percentage deviation for low and high n value materials is also presented. The average percentage devia tion in the present approach reveals that the method proposed proves i ts identity and soundness compared to that of Moss and Ravindra's rela tionships. A good agreement is observed between the computed and liter ature values of refractive indices. (C) 1998 Elsevier Science B.V.