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Nanostructures formation on surface of 6H-SiC by N2 laser radiation

  • Artur Medvid*
  • , Baiba Berzina
  • , Laima Trinklere
  • , Leonid Fedorenko
  • , Petro Lytvyn
  • , VitaliyMalevich
  • , Tomuo Yamaguchi
  • , Mitsuru Aoyama
  • *Corresponding author for this work
  • Riga Technical University
  • NASU - Institute of Semiconductors Physics
  • Shizuoka University

Research output: Contribution to journalConference articlepeer-review

Abstract

Nano-hills formation on a surface of 6H-S1C by the N2 laser focused beam was found. These nano-hills are situated along the circular line with diameter smaller than that of the focused laser beam. Results of the photoluminescence and studies of Friction Force Microscopy speak in favor of the increase of nitrogen concentration in the nano-hills. For explanation of this phenomenon the pressure of liquid matter in the subsurface area and the pressure of the laser beam on the surface of the sample are taken into account. The threshold character of the effect, accumulation effect and increase of N band on PL spectra testify to the main role of the Thermogradient Effect in this phenomenon.

Original languageEnglish
Pages (from-to)427-433
Number of pages7
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5122
DOIs
Publication statusPublished - 2002
Externally publishedYes
EventPROCEEDINGS OF SPIE SPIE - The International Society for Optical Engineering: Advanced Organic and Inorganic Optical Materials - Riga, Latvia
Duration: 19 Aug 200222 Aug 2002

Keywords

  • Atomic Force Microscope
  • Laser
  • Nano-hils
  • Photoluminescence
  • SiC

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