Decay kinetics of the defect-based visible luminescence in ZnO

M. Nikl, G. P. Pazzi, P. Fabeni, E. Mihokova, Jan Pejchal, D. Ehrentraut, A. Yoshikawa, R. T. Williams

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Photoluminescence spectra and decays under pulsed N2 (337 nm) laser excitation were measured for hydrothermally grown bulk and liquid-phase epitaxy (LPE)-grown film ZnO samples within 9-300 K. Temperature dependence of integrated spectra over the exciton and visible spectral regions was evaluated using a model involving standard energy barrier processes. Decay curves measured within a broad time window (10 ns-1 ms) and with extreme signal/background ratio (five orders of magnitude) point to complex decay mechanism in which the exponential and inverse power-law processes can coexist. There is no straightforward interconnection between the observed temperature dependence of integrated visible photoluminescence intensity and its decay shape over the 9-300 K temperature interval.

Original languageEnglish
Pages (from-to)1564-1567
Number of pages4
JournalJournal of Luminescence
Volume129
Issue number12
DOIs
Publication statusPublished - 2009 Dec 1

Keywords

  • Fast scintillator
  • LPE film
  • Luminescence
  • ZnO crystal

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Chemistry(all)
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

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  • Cite this

    Nikl, M., Pazzi, G. P., Fabeni, P., Mihokova, E., Pejchal, J., Ehrentraut, D., Yoshikawa, A., & Williams, R. T. (2009). Decay kinetics of the defect-based visible luminescence in ZnO. Journal of Luminescence, 129(12), 1564-1567. https://doi.org/10.1016/j.jlumin.2009.04.047