Polarizability of erbium-doped zinc-tellurite glasses coated with graphene oxide for telecommunication devices
Authors:   Physics Department, Faculty of Science and Mathematics, University Pendidikan Sultan Idris, 35900 Tanjong Malim, Perak, Malaysia, Azlina Y. , Azlan M. N. ,   Physics Department, Faculty of Science and Mathematics, University Pendidikan Sultan Idris, 35900 Tanjong Malim, Perak, Malaysia, Shaari H. R. ,   Physics Department, Faculty of Science and Mathematics, University Pendidikan Sultan Idris, 35900 Tanjong Malim, Perak, Malaysia, Nazrin S. N. ,   Department of Physics, Faculty of Science, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia, Al-Hada N. M. ,   Shandong Key Laboratory of Biophysics, Institute of Biophysics, Dezhou University, Dezhou 253023, China, Umar S. A. ,   Department of Physics, Faculty of Science, Federal University Lafia, Lafia, Nasarawa State, Nigeria, Zaid M. H. M. ,   Department of Physics, Faculty of Science, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia, Hisam R. ,   Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia, Iskandar S. M. ,   School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia;, Kenzhaliyev B. K. ,   Institute of Metallurgy and Ore Beneficiation, Satbayev University, Almaty, Kazakhstan, Kassymova G. K. ,   Institute of Metallurgy and Ore Beneficiation, Satbayev University, Almaty, Kazakhstan, Boukhris I. ,   Department of Physics, Faculty of Science, King Khalid University; P.O. Box 9004, Abha, Saudi Arabia.,   Université de Sfax, Faculté des Sciences de Sfax, Département de Physique, Laboratoire des matériaux composites céramiques et polymères (LaMaCoP) Faculté des sciences de Sfax BP 805, Sfax 3000, Tunisie
Published: February 2023

Graphene-based nanomaterials offer superior properties especially in optical performance. The existence of oxygen functionalized group in graphene active layers is beneficial to enhance the optical properties of current tellurite glass. In this work, two series of glasses denoted as ZBTEr (uncoated) and ZBTEr-GO (coated) were successfully prepared using melt-quenching and low-cost spray coating techniques. X-ray diffraction analysis was done on both glass series and confirmed the amorphous structural arrangement in the glass system. Morphological study was investigated by using Scanning Electron Microscopy (SEM) and revealed the distribution of graphene layers on the glass surface. The UV-Vis spectroscopy was carried out and several absorption bands were determined for both series of glasses. The computation of oxide ion polarizability and optical basicity were investigated based on Lorentz-Lorentz equation. The oxide ion polarizability and optical basicity for ZBTEr-GO (coated) glasses were found higher than ZBTEr (uncoated) glasses due to the existence of sp 2 graphitic attached on the oxygenic functional groups in GO layers. The metallization criterion values for ZBTEr-GO (coated) glasses were found decreased and tend to be more metallic. Hence, the deposition of graphene layers on the tellurite glasses offer a new strategy to improve the current telecommunication devices.