Journal of Materials Science: Materials in Electronics

, Volume 18, Supplement 1, pp 389–392

Optical properties and structural correlations of GeAsSe chalcogenide glasses

  • Congji Zha
  • Rongping Wang
  • Anita Smith
  • Amrita Prasad
  • Ruth A. Jarvis
  • Barry Luther-Davies
Article

DOI: 10.1007/s10854-007-9235-3

Cite this article as:
Zha, C., Wang, R., Smith, A. et al. J Mater Sci: Mater Electron (2007) 18: 389. doi:10.1007/s10854-007-9235-3

Abstract

GexAsySe100−xy (33 ≤ x ≤ 39 and 12 ≤ y ≤16) glasses were prepared, and their structure and optical properties were studied by Raman and UV–Vis-IR spectroscopic techniques. Ge-tetrahedrons [GeSe4] dominated in the structural units, and ‘defect’ bonds, such as Ge–Ge, Ge–As and As–As bonds, also occurred in the glasses. A structural model for calculation of the optical band gap energy (Eg) of Ge–As–Se glasses was proposed, and the calculated values are consistent with experimental results. Increasing germanium and decreasing selenium content can reduce both the mean bond energies and optical band gap energies, enhancing the photo-sensitivity of the glasses.

Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • Congji Zha
    • 1
  • Rongping Wang
    • 1
  • Anita Smith
    • 1
  • Amrita Prasad
    • 1
  • Ruth A. Jarvis
    • 1
  • Barry Luther-Davies
    • 1
  1. 1.Centre for Ultrahigh Bandwidth Devices for Optical System, Laser Physics Centre, Research School of Physical Sciences and EngineeringAustralian National UniversityCanberraAustralia