Improving the optical, electrical, and dielectric characteristics of MgO doped borate glass for optoelectronic applications

Abstract

Established on the appealing properties of borate glass, a new magnesium borate glass of definite composition (56 − x)B2O3–40Na2O–4MoO3–xMgO (x = 0, 2, 4, 8 mol. %) is prepared via the melt quenching technique. The present study clarified the consequence of dopant and co-dopant on the borate glass. Different physical properties are sustained to investigate and explain the optical and electrical properties of the obtained glass as a result of the replacement of B2O3 by MgO. FTIR confirmed the conversion of MgO6 into MgO4. The index of refraction increased is accompanied by a decrease in bandgap energy. At a frequency of 0.1 Hz, the ac-conductivity varies between 4 and 20 pS/cm at 25 °C and between 10 and 30 nS/cm at 150 °C without the systematic effect of MgO concentration, which indicates that heating plays the main role in improving conductivity. The metallization criterion is between 0.41 and 0.425. The computed two-photon absorption values ranged from 5.313 to 8.391 cm/GW; therefore, it is recommended that the prepared glasses are ideal for optical signal-processing equipment and are considered promising as a new member of the nonlinear optical glass.