Band bending and adsorption/desorption kinetics on N-polar GaN surfaces (Articolo in rivista)

Type
Label
  • Band bending and adsorption/desorption kinetics on N-polar GaN surfaces (Articolo in rivista) (literal)
Anno
  • 2009-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1116/1.3054345 (literal)
Alternative label
  • S. Choi; T.H. Kim, P. Wu; A. Brown; H. O. Everitt; M. Losurdo;G. Bruno (2009)
    Band bending and adsorption/desorption kinetics on N-polar GaN surfaces
    in Journal of vacuum science & technology. B, Microelectronics and nanometer structures
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • S. Choi; T.H. Kim, P. Wu; A. Brown; H. O. Everitt; M. Losurdo;G. Bruno (literal)
Pagina inizio
  • 107 (literal)
Pagina fine
  • 112 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 27 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Duke Univ, Dept Elect & Comp Engn, Durham, NC 27708 USA Duke Univ, Dept Phys, Durham, NC 27708 USA CNR, Inst Inorgan Methodol & Plasmas, I-70126 Bari, Italy (literal)
Titolo
  • Band bending and adsorption/desorption kinetics on N-polar GaN surfaces (literal)
Abstract
  • Abstract: Highly reactive N-polar [000-1] GaN surfaces were analyzed using spectroscopic ellipsometry. Following exposure to air, observed changes in the pseudodielectric function near the GaN band edge indicate that surface contamination reduces the band bending. A subsequent Ga adsorption/desorption experiment on pristine N-polar GaN indicates that it contains a mixture of Ga-terminated and N-terminated surfaces. During deposition, Ga adatoms preferentially bond to the dangling bonds on the N-terminated surface: the measured 3.19 eV desorption activation energy equals the Ga-N decomposition energy. Further deposition forms a 1 ML Ga wetting layer whose 2.78 eV desorption activation energy is comparable to the Ga sublimation energy. (literal)
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