Title: Dominant defect levels in diamond thin films: A photocurrent and electron paramagnetic resonance study
Authors: Nesladek, M
Stals, LM
Stesmans, Andre
Iakoubovskij, K
Adriaenssens, Guy #
Issue Date: Jun-1998
Publisher: Amer inst physics
Series Title: Applied Physics Letters vol:72 issue:25 pages:3306-3308
Abstract: Characteristic features in photocurrent (PC) and electron paramagnetic resonance (EPR) spectra are discussed and attributed to main defects in the gap of optical-quality chemical vapor deposited diamond. A shoulder in the PC spectra with an onset at about 2.2 eV is attributed to the single-substitutional nitrogen defect (EPR P1 resonance at g = 2.0024). A second feature in the PC spectra with an onset of about 1.3 eV is observed on "as-grown" samples with a hydrogen terminated surface. The defect level associated with this feature is hydrogen related, and this defect disappears after oxidation of the diamond sample surface. The EPR g = 2.0028, which was also suggested to be H-related, is discussed. (C) 1998 American Institute of Physics. [S0003-6951(98)01525-3].
ISSN: 0003-6951
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Semiconductor Physics Section
# (joint) last author

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