Cathodoluminescence Studies of Spontaneously Formed Low-dimensional AlGaN Structures

Anders Petersson, Anders Gustafsson, Satoru Tanaka, Yoshinobu Aoyagi, Lars Samuelson

Research output: Contribution to journalArticlepeer-review


Epitaxial films of AlGaN grown on SiC have been investigated using cathodoluminescence, photoluminescence, scanning electron microscope and energy dispersive X-ray emission (EDX). It was found that the films were smooth and homogeneous except for occasional pits, which display characteristic luminescence. EDX measurements reveal that the central part of the pits are Ga rich. A model for the structure of the pits and their formation mechanism is presented.

Original languageEnglish
Pages (from-to)56-59
Number of pages4
JournalPhysica Scripta T
Publication statusPublished - 1999
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Mathematical Physics
  • Condensed Matter Physics


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