Prof. Dr. Donat Josef As

Office Address:
Pohlweg 47-49
33098 Paderborn
Room:
P8.2.10

Publications

Latest Publications

Time-resolved pump–probe spectroscopic ellipsometry of cubic GaN. I. Determination of the dielectric function

E. Baron, R. Goldhahn, S. Espinoza, M. Zahradník, M. Rebarz, J. Andreasson, M. Deppe, D.J. As, M. Feneberg, Journal of Applied Physics 134 (2023).



Overcoming the Miscibility Gap of GaN/InN in MBE Growth of Cubic In<sub><i>x</i></sub>Ga<sub>1–<i>x</i></sub>N

M.F. Zscherp, S.A. Jentsch, M.J. Müller, V. Lider, C. Becker, L. Chen, M. Littmann, F. Meier, A. Beyer, D.M. Hofmann, D.J. As, P.J. Klar, K. Volz, S. Chatterjee, J. Sch?rmann, ACS Applied Materials & Interfaces 15 (2023) 39513–39522.


Selective Area Growth of Cubic Gallium Nitride in Nanoscopic Silicon Dioxide Masks

F. Meier, M. Littmann, J. Bürger, T. Riedl, D. Kool, J. Lindner, D. Reuter, D.J. As, Physica Status Solidi (b) (2022).


Optical evidence of many-body effects in the zincblende Al$_\mathrm{x}$Ga$_\mathrm{1-x}$N alloy system

E. Baron, M. Feneberg, R. Goldhahn, M. Deppe, F. Tacken, D.J. As, Journal of Physics D: Applied Physics (2021).


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Teaching


Current Courses

  • Physikalisches Kolloquium
  • Halbleiterheterostrukturen: Grundlagen und Anwendungen
  • Experimentalphysik für Wing ET
  • Experimentalphysik für Elektrotechniker
  • Characterization Techniques of Solids
  • Aktuelle Probleme der Halbleiterepitaxie
  • Advanced Analytical Techniques