Interdisziplinäres Zentrum für Materialwissenschaften
  Publikationen [suche]   
Angebote für Studenten
Bereiche im
Interdisziplinäres Zentrum für Materialwissenschaften
Nanotechnikum Weinberg
Heinrich-Damerow-Str. 4,
D-06120 Halle, Germany
Tel.: +49 345 55 28471
Telefax:+49 345 55 27390 email:
[Veröffentlichungen] [Graduierungsarbeiten] [Berichte] [Poster]

V. Bondarenko, R. Krause-Rehberg, H. Feick, C. Davia
Defects in FZ-silicon after neutron irradiation - A positron annihilation and photoluminescence study
J. Mater. Sci. 39 (2004), 919-923

Float-zone (FZ) Si irradiated with 1 MeV neutrons was investigated by means of positron annihilation lifetime spectroscopy and photoluminescence. Three types of defects were observed: di-vacancies, small vacancy clusters and an unknown defect with the defect-related lifetime of (285 ? 5) ps that contribute to positron trapping only at low temperatures. Two annealing stages were observed: one at 350 ?C and another at 500 ?C. While the former is due to the annealing of divacancies, the latter is caused by the annealing of vacancy clusters and the unknown defect. ? 2004 Kluwer Academic Publishers

Keywords: positron annihilation, irradiation, silicon, photoluminescence
View / Download

Impressum Copyright © Center of Materials Science, Halle, Germany. All rights reserved.