Structural properties of solution processed Ge 23Sb 7S 70 glass materials

Maike Waldmann, J. David Musgraves, Kathleen Richardson, Craig B. Arnold

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

Solution-processing of chalcogenide glass materials has many benefits for the fabrication of photonic devices. We report on the structural properties of Ge 23Sb 7S 70 glass during solution-processing. The molecular and micro-structure of the bulk glass and the n-propylamine solution, as well as the spin-coated thin films and post-irradiated films are analyzed by Raman spectroscopy, scanning electron microscopy and energy dispersive X-ray spectroscopy. We find the vibrational spectral fingerprint of Ge 4S 10 4--units in the amine solutions as well as in the spin-coated films, indicating a similar molecular structure of solutions and solution-processed films, which differs from the bulk glass. Moreover, the spin-coated films exhibit nanopores, and change their composition during irradiation such that sulfur escapes from the film while oxygen gets absorbed.

Original languageEnglish (US)
Pages (from-to)17848-17852
Number of pages5
JournalJournal of Materials Chemistry
Volume22
Issue number34
DOIs
StatePublished - Sep 14 2012

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Chemistry

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