Browsing Natural and Agricultural Sciences by UP Author "Schmidt, Matthias"

Browsing Natural and Agricultural Sciences by UP Author "Schmidt, Matthias"

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  • Introduction and annealing of primary defects in proton-bombarded n-GaN 
    Schmidt, Matthias; De Meyer, Hannes; Jansen van Rensburg, P.J.; Meyer, Walter Ernst; Auret, Francois Danie (Wiley, 2014-01)
    We report on in situ space charge spectroscopy measure-ments on low-temperature 1.6 MeV proton-bombarded n-type gallium nitride thin film samples. The scope of this study was to investigate the introduction and annealing ...
  • Observation of low-temperature annealing of a primary defect in gallium nitride 
    Schmidt, Matthias; Janse van Rensburg, Pieter Johan; De Meyer, Hannes; Meyer, Walter Ernst; Auret, Francois Danie (Elsevier, 2014-04)
    Primary defects were introduced into n-type gallium nitride (GaN) thin films by 1.6 MeV-proton bombardment at 20 K. The electronic states of these defects were investigated by means of optical space charge spectroscopy. ...
  • A study of the T2 defect and the emission properties of the E3 deep level in annealed melt grown ZnO single crystals 
    Mtangi, Wilbert; Schmidt, Matthias; Auret, Francois Danie; Meyer, Walter Ernst; Janse van Rensburg, Pieter Johan; Diale, M. (Mmantsae Moche); Nel, Jacqueline Margot; Das, A.G.M.; Ling, F.C.C.; Chawanda, Albert (American Institute of Physics, 2013-05-22)
    We report on the space charge spectroscopy studies performed on thermally treated melt-grown single crystal ZnO. The samples were annealed in different ambients at 700 C and also in oxygen ambient at different temperatures. ...