Photoluminescence spectra and dynamics of single CdS nanocrystals studied by scanning near-field optical microscopy

Y. Kanemitsu, M. Ando, K. Matsuda, T. Saiki, C. W. White

研究成果: Article査読

14 被引用数 (Scopus)

抄録

Photoluminescence (PL) spectra and dynamics of hexagonal CdS nanocrystals embedded in Al2O3 matrices have been studied by means of a scanning near-field optical microscope at 8 K. The PL spectra of individual CdS nanocrystals show narrow lines with single-exponential decay profiles, although the macroscopic PL spectra measured by conventional optics show a broad band with non-exponential decay profiles. The PL peaks are observed at energies below the lowest free-exciton energy of CdS nanocrystals. The luminescence mechanism of CdS nanocrystals is discussed.

本文言語English
ページ(範囲)537-540
ページ数4
ジャーナルPhysica Status Solidi (A) Applied Research
190
2
DOI
出版ステータスPublished - 2002 4
外部発表はい

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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