Carrier dynamics in (ZnMg)O alloy materials

Alexej Chernikov, Swantje Horst, Martin Koch, Kerstin Volz, Sangam Chatterjee, Stephan W. Koch, Thomas A. Wassner, Bernhard Laumer, Martin Eickhoff

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Carrier recombination dynamics in Zn1-xMgxO alloys were studied by time-resolved photoluminescence as function of Mg concentration and lattice temperature for different emission and excitation energies. Disorder and carrier localization effects are found to play a significant role, becoming increasingly important for lower temperatures and higher Mg concentrations. Emission energy dependent dynamics were analyzed by the application of a theoretical model, yielding a characteristic localization energy of 60 ± 15 meV for the sample with the highest Mg concentration of x = 0.21.

Original languageEnglish (US)
Pages (from-to)1149-1152
Number of pages4
JournalPhysica Status Solidi (C) Current Topics in Solid State Physics
Volume8
Issue number4
DOIs
StatePublished - Apr 1 2011

Keywords

  • Carrier dynamics
  • Disorder
  • Semiconductors
  • Time-resolved photoluminescence
  • ZnMgO

ASJC Scopus subject areas

  • Condensed Matter Physics

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