Zobrazeno 1 - 10
of 540
pro vyhledávání: '"H. Wenisch"'
Publikováno v:
Verdauungskrankheiten. 33:157-165
Publikováno v:
Zentralblatt für Chirurgie. 130:449-453
Publikováno v:
physica status solidi (b). 229:653-657
Negatively charged trions are investigated for ZnSe single quantum wells embedded in ternary barriers. Polarization and excitation dependent photoluminescence measurements were performed in magnetic fields up to 11.8 T. From these measurements we are
Publikováno v:
Scopus-Elsevier
This paper will address features of plasma-assisted molecular beam epitaxial growth of ZnO and related materials and their characteristics. Two-dimensional, layer-by-layer growth is achieved both on c-plane sampphire by employing MgO buffer layer gro
Publikováno v:
Physical Review B. 62:7413-7419
The polarization- and excitation-intensity-dependent photoluminescence of the negatively charged trion is investigated for ZnSe single quantum wells embedded in ternary and quaternary barriers. The measurements were performed in magnetic fields up to
Publikováno v:
physica status solidi (a). 180:217-223
We have fabricated ZnCdSe/ZnMgBeSe single quantum well (SQW) light emitting diode (LED) structures with ZnSe:N/BeTe:N p-contact layers. The electrical properties of this p-contact layer scheme were evaluated for the use in ZnSe-based II–VI LDs. The
Publikováno v:
Journal of Crystal Growth. :832-836
The polarization-dependent photoluminescence of the negatively charged trion is investigated for ZnSe single quantum wells with varying quantum well thickness between 5 and 20 nm and barrier heights ranging from 30 to 200 meV under application of mag
Publikováno v:
Journal of Crystal Growth. :1075-1079
We discuss the controllable color-range in ZnSe-based light-emitting diodes (LEDs) realized by ZnSe homoepitaxy and internal photoluminescence. ZnSe-based LED structures were grown by molecular-beam epitaxy (MBE) on mostly conductive ZnSe substrates,
Autor:
M. Behringer, H. Wenisch, O. Homburg, R. Heinecke, Detlef Hommel, Peter Michler, Jürgen Gutowski
Publikováno v:
Physical Review B. 60:5743-5750
We present systematic spectroscopic studies of the biexcitonic gain and its transition to electron-hole-plasma gain in ZnSe separate-confinement-heterostructure lasers depending on well width, i.e., biexciton binding energy, excitation density, and t
Autor:
Detlef Hommel, M. Fehrer, U. Rinas, M. Klude, H. Wenisch, Michael Prokesch, Kazuhiro Ohkawa, H. Hartmann, V. Großmann, A. Isemann, H. Heinke
Publikováno v:
Journal of Crystal Growth. :933-937
The different steps of ZnSe substrate preparation are described. In situ hydrogen plasma cleaning to get rid of contaminations like thermally stable oxides on ZnSe substrate surfaces before growth is the crucial point to fabricate reproducibly pseudo