Identification of carbon interstitials in electron irradiated 6H-SiC by use of a 13C enriched specimen

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autor(en): Ley L, Hundhausen M
Zeitschrift: Physical Review B
Verlag: American Physical Society
Jahr der Veröffentlichung: 2002
Band: 66
Seitenbereich: 035204-1
ISSN: 0163-1829


Abstract

Samples of 6H-SiC have been electron-irradiated with electron energies in the range 100-300 keV in a transmission electron microscope. After irradiation the samples were transferred to microscopic low-temperature photoluminescence spectrometers and excited by 325-nm, 488-nm, and 514.5-nm lasers. Optical centers were observed that had high-energy local modes and, when samples that had been enriched with 13C during growth were examined, these local modes were split into triplets. The observations are interpreted as C-C dumb bells created from C interstitials generated during the irradiation process. This is the reported identification of self-interstitial atoms by photoluminescence in SiC.


FAU-Autoren / FAU-Herausgeber

Hundhausen, Martin apl. Prof. Dr.
Lehrstuhl für Laserphysik
Ley, Lothar Prof. Dr.
Naturwissenschaftliche Fakultät

Zuletzt aktualisiert 2018-09-08 um 19:53