Refractive Index and Electronic Polarizability of Ternary Chalcopyrite Semiconductors

Abstract

Simple models are proposed for the calculation of refractive index 𝑛 and electronic polarizability 𝛼 of A I B III C VI 2 and A II B IV C V 2 groups of chalcopyrite semiconductors from their energy gap data. The values of 𝑛 and 𝛼 for 2 compounds of A I B III C VI 2 family and 12 compounds of A II B IV C V 2 family are calculated for the first time in this work. The proposed models are applicable for the whole range of energy gap materials. The calculated values are compared with the available experimental and reported values. A fairly good agreement between them is obtained.

Effect of B2O3 addition on thermal and optical properties of TeO2–ZnO–Bi2O3–TiO2 glasses

“…A refractive index-energy bandgap relationship similar to that obtained in this work (equation ( 12)) was proposed by Kumar et al [51]:…”

“…For the investigated samples, their values are 1.74615, 2.65687, 0.13139 and 0.00667, respectively. This typical change of refractive index versus band gap energy has also been reported in other papers but expressed in different approaches [48][49][50][51][52][53]. Moss's formulation [52] for this relation is expressed as:…”

“…where K 1 and K 2 are constant. Whatever the approach [51][52][53], it can be seen that refractive index decreases with the increase of band gap energy. Applying equations ( 14) and ( 16) to the refractive index and band gap energy data available in [48][49][50][51][52][53], it suggests that constant values apply only to a glass host experiencing compositional change and not to relate refractive index and band gap energy values taken from combined different glass hosts.…”

Simple model for the calculation of concentration and temperature dependent refractive index of different solutions

“…The exponential dependence of the energy gap on the concentration and temperature in alloy semiconductors materials have been reported elsewhere [13]. Further, the correlation between the energy gap and the refractive of semiconductors materials have extensively investigated and reported in the literature [14][15][16][17][18]. Therefore, based on the above analysis, simple exponential models have been proposed for the estimation of concentration and temperature dependent variations in refractive index values of the six solutions namely, three electrolyte (𝐾𝐶𝑙, 𝑁𝑎𝐶𝑙, and 𝐶𝑎𝐶𝑙 2 ), a polar (glucose), a non-polar (ethyl acetate), and a protein (bovine serum albumin) solutions; by utilizing regression analysis to the experimental results and expressed as follows: 𝑛(𝑐, 𝑇) 𝑁𝑎𝐶𝑙 = 1.3736𝑒𝑥𝑝(0.132𝑐 − 9.58 × 10 −5 𝑇)…”

A review on 3d transition metal dilute magnetic REIn3 intermetallic compounds

“…In recent years, the novel chalcopyrite-based DMSs have been widely studied. [16] The room temperature ferromagnetism has been obtained in Cd 1−x Mn x GeP 2 , CuIn 1−x Co x Te 2 , and Cr-doped CuZnSe 2 . [17][18][19] The ferromagnetism is suggested to originate from the spin-spin interactions of 3d transition metal.…”