Infrared optical properties of aged porous GaAs

S. Zangooie, M. Schubert, T. E. Tiwald, J. A. Woollam

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Aging properties of porous GaAs were investigated nondestructively using variable angle of incidence infrared spectroscopic ellipsometry. In addition to the thickness and volume porosity, properties of the solid part of the porous material are investigated in terms of the long-wavelength dielectric function and chemical composition. The high sensitivity is employed to detect and identify infrared resonant absorptions related to different vibration modes of cubic and amorphous As2O3. Resonances centered at 333.3, 480, 785.8, 838, and 1045.5 cm-1 are from cubic As2O3, whereas resonances centered at 350, 490, and 808.5 cm-1 are from amorphous As2O3.

Original languageEnglish (US)
Pages (from-to)1241-1244
Number of pages4
JournalJournal of Materials Research
Volume16
Issue number5
DOIs
StatePublished - May 2001

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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