• 文献标题:   Polarizability of erbium-doped zinc-tellurite glasses coated with graphene oxide for telecommunication devices
  • 文献类型:   Article
  • 作  者:   AZLINA Y, AZLAN MN, SHAARI HR, NAZRIN SN, ALHADA NM, UMAR SA, ZAID MHM, HISAM R, ISKANDAR SM, KENZHALIYEV BK, KASSYMOVA GK, BOUKHRIS I
  • 作者关键词:   oxide ion polarizability, optical basicity, metallization criterion, graphene oxide, tellurite glas
  • 出版物名称:   CHALCOGENIDE LETTERS
  • ISSN:   1584-8663
  • 通讯作者地址:  
  • 被引频次:   0
  • DOI:  
  • 出版年:   2021

▎ 摘  要

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.