抄録
We report on photoluminescence (PL) experiments in CdS nanocrystals fabricated by sequential ion implantation in Al2O3 matrices. The PL spectrum and the spatial image of the PL intensity have been studied at 8 K using a scanning near-field optical microscope. The PL spectrum at each bright spot has been found to consist of narrow lines of various energies, although the spectrum measured by conventional optics shows a single and broad band locating below the free-exciton absorption energy. The origin of the sharp PL lines in CdS nanocrystals will be discussed.
本文言語 | English |
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ページ(範囲) | 539-541 |
ページ数 | 3 |
ジャーナル | Applied Physics Letters |
巻 | 79 |
号 | 4 |
DOI | |
出版ステータス | Published - 2001 7月 23 |
外部発表 | はい |
ASJC Scopus subject areas
- 物理学および天文学(その他)