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Träfflista för sökning "WFRF:(Shubina Tatiana) srt2:(2001)"

Sökning: WFRF:(Shubina Tatiana) > (2001)

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1.
  • Ratnikov, VV, et al. (författare)
  • Determination of microdistortion components and their application to structural characterization of HVBE GaN epitaxial layers
  • 2001
  • Ingår i: Journal of Physics D. - 0022-3727 .- 1361-6463. ; 34:10A, s. A30-A34
  • Tidskriftsartikel (refereegranskat)abstract
    • The dislocation structure of hydride vapour phase epitaxial thick GaN layers grown on sapphire is studied by analysis of the microdistortion tenser components. Symmetrical reflections (including reflections from planes forming large angles with the basal plane) with two modes of scanning (theta and theta -2 theta) in two geometries (Bragg and Lane) are used to obtain the tenser components. The instant connections between the tenser components and major dislocation types are specified. Different types of dislocation distributions have been identified in the thick GaN films grown on sapphire without and with undoped and Si-doped metal-organic chemical vapour deposited templates.
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2.
  • Shubina, Tatiana, et al. (författare)
  • Micro-photoluminescence spectroscopy of exciton-polaritons in GaN with the wave vector k normal to the c-axis
  • 2001
  • Ingår i: Physica status solidi. B, Basic research. - 0370-1972 .- 1521-3951. ; 228:2, s. 481-484
  • Tidskriftsartikel (refereegranskat)abstract
    • We report on polarized micro-photoluminescence (mu -PL) and micro-reflectance (mu -R) studies of GaN layers grown by HVPE. A strong pi -polarized component in the vicinity of A exciton is observed in the mu -PL and attributed as a mixture of a bound B exciton, dominating at low temperature, and scattered A exciton-polariton states prevailing at higher temperatures. Temperature variation of exciton energies in the mu -R spectra reveals strain-induced difference between the top surface and the cleaved edges.
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