AlxGa1-xN-based materials and heterostructures

P. Kung*, A. Saxler, D. Walker, X. Zhang, R. Lavado, K. S. Kim, M. Razeghi

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

17 Scopus citations


We present the metallorganic chemical vapor deposition growth, n-type and p-type doping and characterization of AlxGa1-xN alloys on sapphire substrates. We report the fabrication of Bragg reflectors and the demonstration of two dimensional electron gas structures using AlxGa1-xN high quality films. We report the structural characterization of the AlxGa1-xN / GaN multilayer structures and superlattices through X-ray diffraction and transmission electron microscopy. A density of screw and mixed threading dislocations as low as 107 cm-2 was estimated in AlxGa1-xN / GaN structures. The realization of AlxGa1-xN based UV photodetectors with tailored cut-off wavelengths from 365 to 200 nm are presented.

Original languageEnglish (US)
Pages (from-to)79-84
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
StatePublished - 1997
EventProceedings of the 1996 MRS Fall Symposium - Boston, MA, USA
Duration: Dec 2 1996Dec 6 1996

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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