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Vibrational absorption from vacancy-oxygen-related complexes (VO, V2O, VO2) in irradiated silicon
Univ Lund, Dept Phys Solid State Phys, S-22100 Lund, Sweden Inst Solid State & Semicond Phys, Minsk 220072, Byelarus Natl Def Res Estab, S-58111 Linkoping, Sweden Royal Inst Technol, S-16440 Kista, Sweden.
Univ Lund, Dept Phys Solid State Phys, S-22100 Lund, Sweden Inst Solid State & Semicond Phys, Minsk 220072, Byelarus Natl Def Res Estab, S-58111 Linkoping, Sweden Royal Inst Technol, S-16440 Kista, Sweden.
Univ Lund, Dept Phys Solid State Phys, S-22100 Lund, Sweden Inst Solid State & Semicond Phys, Minsk 220072, Byelarus Natl Def Res Estab, S-58111 Linkoping, Sweden Royal Inst Technol, S-16440 Kista, Sweden.
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1999 (English)In: Physica. B, Condensed matter, ISSN 0921-4526, E-ISSN 1873-2135, Vol. 274, 291-295 p.Article in journal (Refereed) Published
Abstract [en]

Infrared absorption from oxygen-related defects in Si crystals irradiated with electrons (2.5 MeV) at room temperature (RT) and in the range 300-600 degrees C has been investigated. Two new vibrational bands positioned at 10 K at about 1370 and 1430 cm(-1) were observed in samples irradiated at RT. A good correlation is found between these lines and the bands at 836 and 885 cm(-1) known to originate from asymmetrical stretching vibrations (B-1 mode) of an oxygen atom in the neutral and negative VO complex. An attribution of the 1370 and 1430 cm(-1) bands to a combination of the B-1 mode with the symmetrical stretching A(1) mode (weakly IR active) for different charge states of VO is argued to be the most probable. A band at 833.4 cm(-1) is found to increase in strength upon annihilation of divacancies at 250-300 degrees C. The V2O complex is suggested to give rise to this band. New experimental data confirming an attribution of the 895 cm(-1) band to the VO2 complex are presented as well. (C) 1999 Elsevier Science B.V. All rights reserved.

Place, publisher, year, edition, pages
1999. Vol. 274, 291-295 p.
Keyword [en]
silicon, electron irradiation, oxygen, LVMs
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:liu:diva-49926OAI: oai:DiVA.org:liu-49926DiVA: diva2:270822
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2017-12-12

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