Browsing Closed by Author "Gelhausen, Olaf"

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Browsing Closed by Author "Gelhausen, Olaf"

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  • Gelhausen, Olaf; Toth, Milos; Phillips, Matt (American Institute of Physics, 2001)
  • Gelhausen, Olaf; Goldys, Ewa; Paskova, Tanja; Monemar, Bo; Strassburg, M; Hoffmann, Axel; Phillips, Matt (American Physical Soc, 2004)
    Post-growth annealing and electron beam irradiation during cathodoluminescence were used to determine the chemical origin of the main optical emission lines in moderately and heavily Mg-doped GaN. The 3.27 eV donor-acceptor ...
  • Gelhausen, Olaf; Malguth, Enno; Goldys, Ewa; Strassburg, M; Hoffmann, Axel; Graf, T; Gjukic, M; Stutzmann, M; Phillips, Matt (American Institute of Physcis, 2004)
    The optical properties of molecular-beam-epitaxy-grown GaN with different Mn-doping levels (5?23?1019 cm?3) were studied by cathodoluminescence (CL) and optical transmission spectroscopy. Transmission measurements at 2 K ...
  • Gelhausen, Olaf; Klein, Hn; Goldys, Ewa; Phillips, Matt (Wiley-v C H Verlag Gmbh, 2003)
    In-plane- and depth-resolved cathodoluminescence (CL) microanalysis and spectroscopy was carried out to study the impact of electron injection on electro-migration and diffusion of native defects and residual impurities ...
  • Strassburg, M; Rodina, A; Dworzak, M; Haboeck, Ute; Krestnikov, Igor; Hoffmann, Axel; Gelhausen, Olaf; Alves, Helder; Zeuner, Arndt; Hofmann, Detlev; Meyer, Bruno; Phillips, Matt (Wiley-V C H Verlag Gmbh, 2004)
    An identification of shallow bound exciton centers in ZnO is presented based on magneto-optical measurements and diffusion experiments. The thermalization behavior of the Zeeman split components confirms that the I4, I6, ...
  • Gelhausen, Olaf; Klein, Hn; Goldys, Ewa; Phillips, Matt (American Institute of Physics, 2002)
    The effect of low-energy electron beam irradiation (LEEBI) on residual hydrogen impurities and native defects in activated metalorganic vapor phase epitaxy-grown Mg-doped (p-type) GaN layers was studied by cathodoluminescence ...
  • Gelhausen, Olaf; Klein, Hn; Goldys, Ewa; Phillips, Matt (Amer Inst Physics, 2003)
    The effect of low-energy electron-beam irradiation (LEEBI) on native defects and residual impurities in metalorganic-vapor-phase-epitaxy-grown, lightly Mg-doped, p-type GaN was studied by temperature-resolved and excitation ...
  • Gelhausen, Olaf; Goldys, Ewa; Phillips, Matt (IOP Publishing, 2003)
    Scanning cathodoluminescence (CL) spectroscopy and imaging were used to study the effect of post-growth processing on the CL efficiency of metal?organic vapour phase epitaxy-grown Mg-doped GaN. In this work, two treatments, ...