Light and ion induced interdiffusion in amorphous chalcogenide nanomultilayers

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On leave from the Institute of Nuclear Research, Hungarian Academy of Sciences (ATOMKI), H-4001 Debrecen, P. O. Box 51, Hungary ivani@delfin.unideb. hu Comparative investigations of light and ion irradiation induced intermixing have been performed in amorphous Se/As2S3 and As 0.2Se0.8/As0.2S0.8 multilayer films with composition modulation period 6-6.5 nm. It was established that both light and ion irradiation induced interdiffusion is accompanied by optical bleaching and volume expansion of the film. Good correlation between the kinetics of intermixing, measured by low angle X-ray diffraction, and the kinetics of optical transmission changes was observed, which in turn allows an in situ tracking of the diffusion processes by optical measurements. The results and the possible mechanism of light and ion irradiation enhanced interdiffusion are discussed within the framework of thermal spike model.

Original languageEnglish
Pages (from-to)1831-1836
Number of pages6
JournalJournal of Optoelectronics and Advanced Materials
Issue number4
Publication statusPublished - Aug 1 2005



  • Amorphous multilayers
  • Interdiffusion
  • Irradiation
  • Optical bleaching
  • Radiation enhanced diffusion
  • Volume expansion

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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