Time-resolved photoluminescence from ZnO nanostructures

Wai Ming Kwok, A. B. Djurišić, Y. H. Leung, W. K. Chan, D. L. Phillips

Research output: Journal article publicationJournal articleAcademic researchpeer-review

94 Citations (Scopus)

Abstract

Different ZnO nanostructures (tetrapods, shells, rods, and highly faceted rods) were characterized by photoluminescence (PL) and time-resolved PL measurements. It was found that different nanostructures exhibit very different optical properties in terms of defect emission and decay times of the spontaneous emission. No correlation was found between the PL decay times and defect emission intensities and defect emission positions. The short decay times of the UV emission are most likely due to nonradiative defects that are correlated with the crystalline quality and do not contribute to the visible emission. Neither short PL decay times nor intense defect emissions rule out achievement of stimulated emission.
Original languageEnglish
Article number223111
Pages (from-to)1-3
Number of pages3
JournalApplied Physics Letters
Volume87
Issue number22
DOIs
Publication statusPublished - 30 Nov 2005
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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