Study of structural defects limiting the luminescence of InGaN single quantum wells

Ana Cremades, J. Piqueras, M. Albrecht, M. Stutzmann, H. P. Strunk

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

InGaN quantum well (QW) structures with different thicknesses have been characterised by means of cathodoluminescence (CL) in the scanning electron microscope and transmission electron microscopy (TEM), in order to study the structural defects that limit the device operation. Misfit dislocations appear as non-radiative centres in the CL images and compete with the quantum-well related luminescence. The luminescence red shift with increasing QW thickness has been found to be influenced by composition fluctuations.

Original languageEnglish
Pages (from-to)313-317
Number of pages5
JournalMaterials Science and Engineering B: Solid-State Materials for Advanced Technology
Volume80
Issue number1-3
DOIs
StatePublished - 22 Mar 2001

Keywords

  • InGaN
  • Luminescence
  • Single quantum wells
  • Structural defects

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