MOVPE growth and characterization of znte epilayers on (100) znte:P substrates (Articolo in rivista)

Type
Label
  • MOVPE growth and characterization of znte epilayers on (100) znte:P substrates (Articolo in rivista) (literal)
Anno
  • 2002-01-01T00:00:00+01:00 (literal)
Alternative label
  • Lovergine N., Traversa M., Prete P., Yoshino K., Ozeki M., Mancini A.M. (2002)
    MOVPE growth and characterization of znte epilayers on (100) znte:P substrates
    in Journal of crystal growth
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Lovergine N., Traversa M., Prete P., Yoshino K., Ozeki M., Mancini A.M. (literal)
Pagina inizio
  • 37 (literal)
Pagina fine
  • 42 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 248 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Titolo
  • MOVPE growth and characterization of znte epilayers on (100) znte:P substrates (literal)
Abstract
  • The growth of ZnTe by atmospheric pressure metalorganic vapour phase epitaxy on (100)ZnTe:P substrates is reported. The epilayers were grown at 340°C after in situ H2 heat cleaning of the substrate for surface oxide removal. Secondary ion mass spectrometry analysis of as-grown samples has shown that in situ treatment temperatures above 240°C are necessary. Moreover, no phosphorous incorporation occurs in the epilayers by either diffusion from the substrate or auto-doping through the vapour. Carbon is instead incorporated in the epilayers at concentrations higher than in the substrate. 4.2K photoluminescence (PL) measurements show a dominant band edge emission, whose main component at 2.3809eV is identified, by comparison with reflectance spectra, with the 1s-state free exciton line, its FWHM being 2.2meV. A weak 2s-state exciton line also appears on the high-energy side of the ground-state emission, further confirming the high optical quality and purity of the epilayers. Donor and acceptor bound exciton lines are also identified within the band edge region, whilst free-to-bound and donor–acceptor pair bands below 2.37eV in the PL spectra are ascribed to luminescence from the substrate. (literal)
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