Origin of green emission from ZnS nanobelts as revealed by scanning near-field optical microscopy

T. Tsuruoka, C. H. Liang, K. Terabe, T. Hasegawa

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The emission properties of ZnS nanobelts synthesized through thermal evaporation were investigated by means of scanning near-field optical microscopy. The photoluminescence (PL) images of single nanobelts exhibited a bright line along their length. The local light emission spectra measured over the bright lines showed a green emission peak around 535 nm, which was in good agreement with a PL peak obtained for an ensemble of the nanobelts. From careful scanning-electron-microscopy observations of identical nanobelts, we found that the observed green emission is related to line or planar defects of the ZnS nanobelts.

Original languageEnglish
Article number091908
JournalApplied Physics Letters
Issue number9
Publication statusPublished - 2008 Mar 14


ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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