Skip to main content

6 Result(s)

within R Kröger Remove this filter Materials Engineering Remove this filter

and

  1. No Access

    Article

    Compositional Fluctuations in AlxGa1-xN Layers grown on 6H-SiC (0001) by Metal Organic Vapor Phase Epitaxy

    The microstructural evolution of AlxGa1-xN films grown by metalorganic vapor phase epitaxy on 6H-SiC (0001) was studied by means of X-ray diffraction, atomic force microscopy and transmission electron microscopy ...

    R. Kröger, S. Einfeldt, Z. J. Reitmeier, R. Chierchia… in MRS Online Proceedings Library (2011)

  2. No Access

    Article

    Investigation of Green Emitting Monolithic II-VI Vertical Cavity Surface Emitting Laser

    In this paper, we are investigating the growth of a ZnSe based vertical cavity surface emitting laser (VCSEL). Undoped and p-type doped distributed Bragg reflectors (DBRs) with reflectivities exceeding 99% hav...

    C. Kruse, G. Alexe, R. Kröger, M. Klude, H. Heinke… in MRS Online Proceedings Library (2011)

  3. No Access

    Article

    Anti-diffusion barriers for gold-based metallization to GaN

    We propose a new metallization scheme to p-GaN, where thin-film transition metal nitrides have been applied to improve thermal stability of gold-based metallization. In this metallization scheme the Pd/Au bila...

    A. Piotrowska, E. Kaminska, M. Guziewicz, E. Dynowska… in MRS Online Proceedings Library (2005)

  4. No Access

    Article

    Microstructure of highly p-type doped GaN sub-contact layers for low-resistivity contacts

    The effect of a highly Mg doped subcontact layer on top of GaN grown by metal organic vapor phase epitaxy and its interface to a Pd/Au contact layer was investigated by means of transmission electron microscop...

    R. Kröger, J. Dennemarck, T. Böttcher, S. Figge… in MRS Online Proceedings Library (2004)

  5. No Access

    Article

    Determination of the anisotropic optical properties for perfluorinated vanadyl phthalocyanine thin films

    Thin films of perfluorinated vanadyl phthalocyanine F16PcVO were prepared by physical vapor deposition in high vacuum on KBr and fused silica substrates. The absorption spectra in the visible region show that the...

    O. D. Gordan, M. Friedrich, W. Michaelis, R. Kröger… in Journal of Materials Research (2004)

  6. No Access

    Article

    Nucleation and Growth of CVD Cu Films

    In this work the nucleation and growth of CVD Cu on MOCVD TiN barrier layer as well as on PVD Ta with and without a PVD Cu seed layer on top were studied. Scanning and transmission electron microscopy was used...

    R. Kröger, M. Eizenberg, D. Cong, N. Yoshida, L. Y. Chen… in MRS Online Proceedings Library (1999)