Silver Photo-Diffusion and Photo-Induced Macroscopic Surface Deformation of Ge33S67/Ag/Si Substrate

M. Ailavajhala, M. Mitkova

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

Ge-chalcogenide films show various photo-induced changes, and silver photo-diffusion is one of them which attracts lots of interest. In this paper, we report how silver and Ge-chalcogenide layers in Ge 33 S 67 /Ag/Si substrate stacks change under light exposure in the depth by measuring time-resolved neutron reflectivity. It was found from the measurement that Ag ions diffuse all over the matrix Ge 33 S 67 layer once Ag dissolves into the layer. We also found that the surface was macroscopically deformed by the extended light exposure. Its structural origin was investigated by a scanning electron microscopy.

Original languageAmerican English
JournalJournal of Applied Physics
DOIs
StatePublished - 7 Aug 2016

Keywords

  • chalcogenides
  • germanium
  • neutrons
  • reflectivity
  • silver

EGS Disciplines

  • Electrical and Computer Engineering

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