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Blue light emission from ultrafine nanosized powder of silicon produced by intense pulsed ion-beam evaporation

  • Kiyoshi Yatsui*
  • , Michiharu Gunji
  • , Sung Chae Yang
  • , Hisayuki Suematsu
  • , Weihua Jiang
  • , Takashi Yatsui
  • , Motoichi Ohtsu
  • *Corresponding author for this work
  • Nagaoka University of Technology
  • Institute of Science Tokyo

Research output: Contribution to journalJournal articlepeer-review

Abstract

Blue light emission has been observed from ultrafine nanosized powder of silicon, which was synthesized by rapid cooling of high-density ablation plasma produced by intense pulsed light-ion beam interaction with a silicon target, called pulsed ionbeam evaporation. The emission appears from the powder without heat treatment after being synthesized. Furthermore, the emission is found to be very stable; neither red- nor blue-shift is observed. In fact, the spectrum from the powder four months after the synthesis is the same as those from as-synthesized powder. The rapid heat cooling inherent to ion-beam evaporation seems to be essential for emission.

Original languageEnglish
Pages (from-to)L92-L94
JournalJapanese Journal of Applied Physics
Volume44
Issue number1-7
DOIs
StatePublished - 2005

Keywords

  • Blue light emission
  • High-density ablation plasma
  • Ion-beam evaporation
  • Nanosized powder of silicon
  • Photoluminescence
  • Rapid heat cooling

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