Tunable thermal quenching of photoluminescence in GaN

M. A. Reshchikov, J. D. Mcnamara, F. Shahedipour-Sandvik

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


In this work, we report the observation of abrupt and tunable thermal quenching of photoluminescence (PL) in high-resistivity, undoped GaN. The ultraviolet luminescence (UVL) band in these samples exhibited abrupt and tunable quenching, which is similar to behavior observed for p -type GaN:Mg samples. Such behavior has never been observed for undoped GaN and was very rarely reported for other semiconductors. We describe the effect of temperature and excitation intensity on PL in undoped GaN with a phenomenological model involving three defect species. 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Original languageEnglish (US)
Pages (from-to)389-392
Number of pages4
JournalPhysica Status Solidi (C) Current Topics in Solid State Physics
Issue number3-4
StatePublished - Apr 2014


  • Defects
  • Photoluminescence
  • Quenching

ASJC Scopus subject areas

  • Condensed Matter Physics


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