Spontaneous and stimulated emission of ZnO/Zn0.85Mg 0.15O asymmetric double quantum wells

S. C. Su, Y. M. Lu, G. Z. Xing, T. Wu

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

ZnOZn0.85Mg0.15O asymmetric double quantum wells (ADQWs) were fabricated on an m-plane Al2O3 substrate by plasma-assisted molecular beam epitaxy (P-MBE). The ADQW structures were confirmed by comparing the photoluminescence (PL) spectra of the ZnOZn 0.85Mg0.15O MQWs and ZnOZn0.85Mg 0.15O ADQWs. The exciton tunnelling properties of the ADQWs were studied by means of temperature-dependent PL spectra. The carrier tunneling through the thin barrier is conducive to stimulated emission in the wide wells (WWs) of the ADQWs. The origin of the stimulated emission is excitonexciton scattering in the WWs of ADQWs.

Original languageEnglish (US)
Pages (from-to)485-490
Number of pages6
JournalSuperlattices and Microstructures
Volume48
Issue number5
DOIs
StatePublished - Nov 1 2010

Keywords

  • ADQWs
  • Stimulation emission
  • ZnMgO

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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