http://www.cnr.it/ontology/cnr/individuo/prodotto/ID33867
Structural and optical characterization of GaN heteroepitaxial films on SiC substrates (Articolo in rivista)
- Type
- Label
- Structural and optical characterization of GaN heteroepitaxial films on SiC substrates (Articolo in rivista) (literal)
- Anno
- 2006-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1016/j.apsusc.2006.05.097 (literal)
- Alternative label
M. Morse, P. Wu, S. Choi, T.H. Kim, A.S. Brown, M. Losurdo, G. Bruno (2006)
Structural and optical characterization of GaN heteroepitaxial films on SiC substrates
in Applied surface science
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- M. Morse, P. Wu, S. Choi, T.H. Kim, A.S. Brown, M. Losurdo, G. Bruno (literal)
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- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
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- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- [ 1 ] Duke Univ, Dept Elect & Comp Engn, Durham, NC 27706 USA
[ 2 ] Duke Univ, Dept Phys, Durham, NC 27706 USA
[ 3 ] CNR, IMIP, Inst Inorgan Methodol & Plasmas, I-70126 Bari, Italy (literal)
- Titolo
- Structural and optical characterization of GaN heteroepitaxial films on SiC substrates (literal)
- Abstract
- We have estimated the threading dislocation density and type via X-ray diffraction and Williamson-Hall analysis to elicit qualitative information directly related to the electrical and optical quality of GaN epitaxial layers grown by PAMBE on 4H- and 6H-SiC substrates. The substrate surface preparation and buffer choice, specifically: Ga flashing for SiC oxide removal, controlled nitridation of SiC, and use of AlN buffer layers all impact the resultant screw dislocation density, but do not significantly influence the edge dislocation density. We show that modification of the substrate surface strongly affects the screw dislocation density, presumably due to impact on nucleation during the initial stages of heteroepitaxy. (literal)
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