Please use this identifier to cite or link to this item: http://hdl.handle.net/10773/6486
Title: Broad emission band in GaN epitaxial layers grown on 6H-SiC and sapphire
Author: Monteiro, T.
Pereira, E.
Correia, M.R.
Xavier, C.
Hofmann, D.M.
Meyer, B.K.
Fischer, S.
Cremades, A.
Piqueras, J.
Keywords: GaN
Yellow luminescence
Issue Date: 1997
Publisher: Elsevier
Abstract: Mid-band-gap emissions in GaN epilayers grown on 6H-SiC and sapphire are studied by time-resolved spectroscopy (TRS). The yellow luminescence peaking at ca. 2.2 eV at low-temperature shifts to higher energies with increasing temperature. The presence of emission with the same characteristics in samples grown on different substrates and by different processes indicates that the defects responsible for the emission are of intrinsic nature but dependent on the cubic or hexagonal habit of the crystals. TRS are compared with cathodoluminescence (CL) in a scanning electron microscope (SEM) and optically detected magnetic resonance (ODMR) data.
Peer review: yes
URI: http://hdl.handle.net/10773/6486
DOI: 10.1016/S0022-2313(96)00328-6
ISSN: 0022-2313
Appears in Collections:DFis - Artigos

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