Host isotope effect on the local vibration modes of VH2 and VOH2 defects in isotopically enriched28Si, 29Si and30Si single crystals

Takeru Ohya, Kohei M. Itoh, Rui N. Pereira, Brian Bech Nielsen

研究成果: Article査読

3 被引用数 (Scopus)

抄録

Local vibrational modes of a vacancy with two hydrogen atoms (VH 2) and of a vacancy with one oxygen and two-hydrogen atoms (VOH 2) in silicon have been investigated using isotopically enriched 28Si, 29Si, and 30Si single crystals. Infrared absorption spectroscopy revealed shifts in the Si-H stretch frequencies of the two defects when the mass of the silicon host atoms was changed. The observed stretch frequencies can for each defect be accounted for with a simple vibrational model based on two coupled Morse oscillators. The anharmonic contribution to the local vibrational mode frequencies of these two defects is evaluated.

本文言語English
ページ(範囲)7309-7313
ページ数5
ジャーナルJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
44
10
DOI
出版ステータスPublished - 2005 10月 11

ASJC Scopus subject areas

  • 工学一般
  • 物理学および天文学一般

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