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Presentation
Characterization of Thermally Evaporated Ag-Ge-S Thin Films
Materials Research Society Symposium Proceedings
  • Fei Wang, California Polytechnic State University - San Luis Obispo
  • William Porter Dunn, California Polytechnic State University - San Luis Obispo
  • Mukul Jain, California Polytechnic State University - San Luis Obispo
  • Carter De Leo, California Polytechnic State University - San Luis Obispo
  • Nicholas Vicker, California Polytechnic State University - San Luis Obispo
  • Richard Savage, California Polytechnic State University - San Luis Obispo
  • Xiaomin Jin, California Polytechnic State University - San Luis Obispo
  • Sergey Mamedov, Horiba Jobin Yvon Inc.
  • Punit Boolchand, University of Cincinnati - Main Campus
Publication Date
3-24-2008
Abstract

Thin films of ternary (GeS3)1-xAgx glasses (x=0.1 and 0.2) are studied in this work. Thin films are fabricated in a vacuum thermal evaporator at 3 different evaporation angles (0o, 30o and 45o). All thin film samples are examined in Raman spectroscopy. Raman results of both normally and obliquely deposited thin film samples reveal Ge-S CS modes (~340cm-1) , Ge-S ES (~360cm-1) modes, and thiogermanate modes Q1~Q3 (390cm-1~437cm-1). In addition, sharp peaks due to sulfur rings (S8) are observed at 218cm-1 and 470cm-1. Raman line-shapes of thin films are qualitatively consistent with their corresponding bulk glasses?. However, the sharp peaks due to sulfur rings were not observed in bulk glasses. By comparing CS modes of thin films of three angles, we observe that normally deposited (0 degree) thin film shows a red-shift in center and a broadening in width. The film thickness of normally deposited films are significantly smaller comparing with that of corresponding obliquely deposited films.

Citation Information
Fei Wang, William Porter Dunn, Mukul Jain, Carter De Leo, et al.. "Characterization of Thermally Evaporated Ag-Ge-S Thin Films" Materials Research Society Symposium Proceedings Vol. 1072 (2008)
Available at: http://works.bepress.com/xjin/23/