Spin-dependent recombination involving oxygen-vacancy complexes in silicon

David P. Franke, Felix Hoehne, Leonid S. Vlasenko, Kohei M Itoh, Martin S. Brandt

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Spin-dependent relaxation and recombination processes in γ-irradiated n-type Czochralski-grown silicon are studied using continuous wave (cw) and pulsed electrically detected magnetic resonance (EDMR). Two processes involving the SL1 center, the neutral excited triplet state of the oxygen-vacancy complex, are observed which can be separated by their different dynamics. One of the processes is the relaxation of the excited SL1 state to the ground state of the oxygen-vacancy complex, the other a charge transfer between 31P donors and SL1 centers forming close pairs, as indicated by electrically detected electron double resonance. For both processes, the recombination dynamics is studied with pulsed EDMR techniques. We demonstrate the feasibility of true zero-field cw and pulsed EDMR for spin-1 systems and use this to measure the lifetimes of the different spin states of SL1 also at vanishing external magnetic field.

Original languageEnglish
Article number195207
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume89
Issue number19
DOIs
Publication statusPublished - 2014 May 23

Fingerprint

oxygen recombination
Silicon
Oxygen vacancies
Magnetic resonance
magnetic resonance
Excited states
continuous radiation
silicon
oxygen
Ground state
atomic energy levels
Charge transfer
charge transfer
Magnetic fields
life (durability)
ground state
Electrons
magnetic fields
excitation
electrons

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Spin-dependent recombination involving oxygen-vacancy complexes in silicon. / Franke, David P.; Hoehne, Felix; Vlasenko, Leonid S.; Itoh, Kohei M; Brandt, Martin S.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 89, No. 19, 195207, 23.05.2014.

Research output: Contribution to journalArticle

Franke, David P. ; Hoehne, Felix ; Vlasenko, Leonid S. ; Itoh, Kohei M ; Brandt, Martin S. / Spin-dependent recombination involving oxygen-vacancy complexes in silicon. In: Physical Review B - Condensed Matter and Materials Physics. 2014 ; Vol. 89, No. 19.
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